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Home My WebLink About20142630.tiff EXHIBIT INVENTORY CONTROL SHEET Case USR14-0033 — Hankins Farms, LLC Exhibit Submitted By Description A. Planning Commission Resolution of Recommendation B. Planning Commission Summary of Hearing (Minutes dated 8/19/2014) C. Planning Services PowerPoint Presentation D. Janet Hein Letter of Concern E. Linda Kautz Letter of Concern F. Donald Kautz Letter of Concern G. Tom Shoecraft Photos and CD with Video H. I. J. K. L. M. N. O. P. Q. R. S. T. U. V. V\/. 2014-2630 1.1 D . A . - .1 r : . . e • h 4-444L. 1 a - ..^.i.7!l�.:. ~••� . jam_ _ . .- 4 _ - - - .. - i •��ti� -- _ - r_ a L F1I11:1 .' 1h@ irtrtz l- re,-,-accts zUnp It1:-• Noperty in i be Mimed het, :l l.;, '' %7-Homy i inlin5Nt O;4110111Am on artt1 • r ,�, aril of Crx, r DIY Cofn411asi�ei ` boa% tuipannia t Witt ber ?bate el 4. • WELD COUNTY AQ a4 IC?INI TR i BUILDING - • --� 1150 "O" Street • Greeley . CO 80631 1 - - I ! ii)r4noq %%yr ,.#1 n('K) ,:xt s. .. i r ;;� >i� n,,,ato c'? 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' ' tv i' vo.* Oar south of CR 54 • • ied fire c `i •• '. i $ 1 its • 7, it • • 4 . •• It' 4 lit ill 0 . • rS. ► •� I ' I . f 4 4:34, • a lik- . e -- A ow fialli ... - 4,-.1. r AI !� • 1a er say - �' r_ View looking southwest • - • ••• 7. •••4•1*. •0 • • 49‘ t N. •• • A • • eV, ' C44%• a ir• • . •• .T r . 4,14; • •• -•• '` • • i j _ .y _„ a -j'lle 4)Lam°' • T 1 w .s es• 1 r - - fie _ �... -tea- - - A• a 1 •�, a 1VT� ♦ • iill`� �• • ~ •• ! ter4. .4 _ v _ • .Z • it • • •• ,- • 't! . • • k• • -v• kS- If} la J y View looking west on CR 54 - . t ,i • .lei • • ' , -till dilfra-sur ._ . .4177-"" •: . a-..-7. - I .. _ + ••••• � ♦ �_ �' _ ~` j + t of I - ♦� ' Iy, _ - Y OW II herWO • Y• 4 r - . a��ta — -a.m. 1/4 • i • 1,•- _ Y • .7,- isicilli •• IS . 4W0,9Air ` ,�"�-a . j •- . _F fr S --' '�, - •, - , ,. ..� 's ate. _ ��• at)• ► . • - p a r a ' • • �� rfT' : > . . ff . • tit • `�'1 •� Aril(a��• � a� y i ,, 1 ♦ « 1 •�:j ! 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I '' - _ why x _ .,. - - t • 1 1 - ` View looking east I^ r • I. • y . . . _ itisa *SS far a a • I I. ' i .1 I . • ` ty P. J//J/ r 4 / ___— — . 401/14 • A r .1 ♦ • a• _ X . Y 4 ea 13/4r + o ! • _ . • 3 1 ,- • _ - , • ti e.• • - Y • •• ' • -• View looking southeast ` • ,• ' '• • -• ., f ' • A. •'•T. �Zf- :�y is. •` Ii IP a "tire• ,, Tp • • 111 1 • • w a ' �y _ • sr X.4 ` ' CI a II •• • • • • 1='.." • is • _ •' - - _'.A.;mow'.. .r- + •.•i _ • .yyyppp��, ` • �T ' • •f ♦ v, - • - - -� _ .e `_ *fr. 0 • • t 411 f a •.• • 1� ♦- • ii".I.: - a - --Sr . & 1.- ° yt.' y' + �I •4b.- :��,•_ } '� 'ma• >trr x I - 11)ile ' sir • ' .-• -- ."...---,..".'-.:•_.. • T T i . '1 t -_' • ' � - _!lam• - 1 _-"Ix•i- y -• • .11/21 ` 4 t ID • , 4 rea3tr IT . r it ea • . s_ ti7d-AreaL •' - .•.-I _4 _ _ .`J._ A' i. : ht View' I kinsouthon R 17 oo g C r 1 •2114 ._ El mi imp I y I i _ Si. •••••• 1 i M •I•- ... a. • 1 WI.. V. _ _ - - ,. t _ _ _41 JP it, A1 Illi ��• }IL l ..1' y IIIIIIIWilr_: -, SO - -. !Y 1,- a - 4 - . err f • j. • II Ss b • -_. . - - View looking southwest ''. row . e .. , Is .1- to a- • a. Wni.. -, le.•11 T -. .40,‘ • .AIrTh"rir i t1y .l I • it A .y f 4 • S Ar ' . ir ' 4 s , , - Karla Ford From: Esther Gesick en 1 t .Oti -Q Monday,August 18,2014 1:59 PM '• 14124.1j Karla Ford;Tisa Juanicorena Mir FW:USR14-0033 Ka_ eittAcktpih lualq;/' Categories: Esther A. iiu.Lia-, t pl ' E h�;1- 3. For inclusion in the file. r UU Esther E. Gesick Clerk to the Board 1150 0 StreetIP.O. Box 758IGreeley, CO 80632 tel: (970) 336-7215 X4226 Confidentiality Notice: This electronic transmission and any attached documents or other writings are intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. If you have received this communication in error, please immediately notify sender by return e-mail and destroy the communication. Any disclosure, copying, distribution or the taking of any action concerning the contents of this communication or any attachments by anyone other than the named recipient is strictly prohibited. Original Message From: Barbara Kirkmeyer Sent: Friday, August 15, 2014 4:21 PM To: Janet Hein Cc: Diana Aungst; Commissioners; Esther Gesick Illlubject: Re: USR14-0033 Janet I am not able to comment on a application that is coming before the Board. I have forwarded your comments to the other commissioners and the Clerk. She will make them part of the public documents. Thanks Barb Have a great day > On Aug 15, 2014, at 12:53 PM, "Janet Hein" <iohein(dmsn.com> wrote: > Ms. Kirkmeyer, > I have attached a copy of my letter to the planning Department regarding the above- referenced Use by Special Review. > Being a farm girl yourself, I would think you could appreciate my concerns, and that of my husband, with regard to the proposed activities listed in this application submitted by Hankins Entertainment LLC. Few, if any of these activities come close to being "agricultural" in nature, nor do they promote agriculture. They are strictly entertainment in nature, and as such should be located closer to an urbanized area, not in an agricultural community. The increased number of cars and people coming to this area and our health safety and welfare because of the trash, traffic, noise, congestion, crime, etc., are of great concern to us. These are not activities consistent with Chapter 22 of the Weld County Code. As it states in Weld County's Right to Farm Statement, "Agricultural users of the land •hould not be expected to change their long-established agricultural practices to accommodate he intrusions of urban users into a rural area." > 9. > We plan to attend the meeting scheduled for this Tuesday and every meeting in the future to ensure our strong opposition to the plan by Hankins Entertainment LLC is heard. > > I would welcome a call from you to discuss this matter in more detail. > Janet L. Hein > Hein Family RLLLP > 7800 County Road 54 > Johnstown, CO 80534 > 970-587-8504 > <Letter to Weld County.pdf> 2 Linda Kautz 7651 County Road 54 Johnstown, CO 80534-9610 970.587.5595 lindakautz@yahoo.com August 27, 2014 To the Weld County Board of Commissioners; I am writing in regard to proposed USR 14-0033. In the interest of full disclosure, I should mention that I sit on the Board of Public Health. I will not be able to attend the September 3 hearing, so I am writing to express my concerns with this proposal. Many questions remain unanswered after the August 19 Planning Commission hearing .Among them: • Does Mr. Hankins have a plan in place to prevent excess runoff from the parking area? There is a long history of drainage problems from the Hankins property. Irrigation runoff has washed out our driveway on multiple occasions, and the senior Mr. Hankins has been most unwilling to remedy the situation. Darren seemed unaware of the water quality feature proposed by the planner. We have livestock in our pasture that depend on the water that will be affected. • Likewise, is there a plan in place to prevent trash from clogging the waterway? At the Planning Commission hearing, Mr. Hankins seemed unconcerned about the possibility of trash becoming a problem for adjacent property owners, stating that he can't control what visitors to his venue do with their trash. Again,our livestock depends on the water that could be contaminated with trash. • What provisions has Mr. Hankins made for security? Although alcohol will not be served at his venue,that doesn't prevent customers arriving at the site already intoxicated. Also, are there provisions in place to enforce the smoking ban? A carelessly discarded cigarette butt in dry corn stalks could cause a devastating fire. Are there provisions to prevent vandalism to surrounding property? • Does Mr. Hankins have adequate liability insurance? • The traffic issues discussed at the Planning Commission hearing have not been satisfactorily addressed. The four-way stop at Rd. 17 and Rd. 54 will not be adequate for the increased traffic; it is barely adequate now. • Noise issues have not been resolved; the time required for remediation of excess noise is far too long those of us who live here and enjoy a good night's sleep. • The proposed expansion of the activities at the venue must be pared down. Helicopter rides and air shows, for example, are not appropriate for an area with the number of residences in existence. EXHIBIT Ia 1lfA2I4-Cow In short, this proposal is not a good fit for the area . I find it interesting that Darren Hankins candidly admitted at the Planning Commission hearing that, while his brother has remained on the farm and continues to work with their father, he himself didn't have an "inkling" ( I think he meant inclination ) to stay on the farm . Suddenly, when there's money to be made, he seems to have reconnected with his agricultural roots. Someone at the Planning Commission hearing expressed a concern about premature approval of this proposal as "how do we get this cat back in the bag?" I urge you to either deny this proposal or require a great deal more planning and attention to detail before approval, or the cat will never be recaptured . Sincerely, Linda Kautz Donald Kautz 7651 County Road 54 Johnstown, CO 80534-9610 970.587.5595 kautzdonald@yahoo.com September 2, 2014 To the Weld County Board of Commissioners; I am writing in regard to proposed USR 14-0033. I may not be able to attend the full meeting on September 3, 2014, so I am writing with my concerns if you do not get the above USR before I need to leave. I have three main concerns,they relate to dust generated by traffic, water quality issues and noise. First let me address the dust issues,the traffic will be driving over a newly created dirt road going to a newly created dirt parking lot. This traffic will created dust and will flow downstream to our property and those below us. Hankins Entertainment has stated they will provide dust control through AN mounted sprayer. I have one of those for weed control and it does not provide adequate moisture to control dust. Second, water runoff from the parking lot will directly run into spring-fed lake that then drains year- round through our property. Trash and dirt from the venue will enter this system. Hankins Entertainment says they will maintain the venue but cannot be responsible for what their visitors may do. It is my feeling that if they are offering this venue,they are responsible for what their visitors may do while on their property. I do not want trash and dirt blowing downstream to my property where I will have to take care of it. Third,the noise generated by a music stage venue will again travel downstream to the neighbors below. The Hankins family home will be shielded from this by a grove of trees and a small ridge, which serve only to funnel the noise down the valley those of us below. The two "neighbors"that spoke in favor of the proposal at the Planning Commission hearing in August are neighbors only in that they own property next the venue. Neither of them actually lives on the property and they are both upstream from the venue and will not have to deal with the downstream effects. I do not feel this is an appropriate use for this property, I find it interesting that Weld and surrounding counties are receiving grant money to restore water habitat damaged by last year's flooding, but we are willing to allow Hankins Entertainment to destroy a water habitat to somehow educate city-dwellers on how we do things down on the farm and "re-connect to our ag roots". When I grew up on a farm I was taught to take care of the land not destroy it for purposes of entertainment. EXHIBIT Sincerely, Donald Kautz U-402,1u-003 Jennifer Fuller From : Donald Kautz [kautzdonald@yahoo.com] Sent: Wednesday, September 03, 2014 8: 12 AM To: Jennifer Fuller Subject: USR14-0033 Attachments: board of county commissioners09022014.docx Good Morning , This is for Weld Board of County Commissioners meeting this morning . 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S „ I , , I Y 'x .41 ., 4 fF ,� (l 16 1. lI +I . � i, ,ti c� ., , .!,.. . . �►. , , , .I:. . .. . ..,,. . ' t '.',. Ill. iii ' j1« II1 III [II ,‘.\,715,::, f!''IE[ _. 1I t �b :l rile rlr 1Jc..),�`ii I'I # ' Ili I'di', ' ilir S • •••!:::',....,,,..i.::....lI �� - ° � f1 f. i) 11' . i i '. •h ,j 9:,.....14,,,,i, 'i'i.,w •DISTRICT COURT,WELD COUNTY,COLORADO SUBPOENA CASE NO:D0622013CR001345 DIVISION: 12 TO TESTIFY CHARGE: VEHICULAR ASSAULT-DUI 191312030015 M THE PEOPLE OF THE STATE OF COLORADO VS. EVENT: Jury Trial SHAWN CHARLES, A DEFENDANT 09/05/1974 PROSECUTOR: Michael Pirraglia II AGENCY CR#: 131455 JUDGE: Timothy Kerns TO: Tom Shoecraft o, .cot° 25973 W C R 17 �� 9 Johnstown, CO 80534 ° 1876 OFFICE OF THE DISTRICT ATTORNEY NINETEENTH JUDICIAL DISTRICT, COLORADO You are hereby commanded to appear on 04/07/2014 at 8:00 am Kenneth R. Buck In the above Court,at the WELD COUNTY COURT DISTRICT ATTORNEY 910 10th Avenue P O Box 1167 Greeley, CO 80631 915 10th Street Greeley,CO 80632 To testify on behalf of the People of the State of Colorado. (970)356-4010 strict Specific: YOU MUST APPEAR ON YOUR SUBPOENA UNLESS YOU ARE FAX: (970)352-8023 FORMED OTHERWISE. PLEASE CALL 970-356-4010 x 4746 IF YOU HAVE QUESTIONS. Special Instructions: Subpoena issued on: 12/3/2013 Pursuant to C.R.Crim. P. Rule 17 Notes:Pre-Trial Readiness 3/25/14 WAIVER OF PERSONAL SERVICE IMPORTANT: Event Date: 04/07/14 8:00 am Event:Jury Trial When you are served with a Case No: D0622013CR001345 Division: 12 subpoena,either personally Agency CR#: 131455 Prosecutor: Michael Pirraglia II or by waiver,you arc Defn: SHAWN CHARLES Offense Date: 8/4/2013 required to attend unless the Witness: Tom Shoecraft DOB: -),)�5 ( case is vacated. If you agree to WAIVE PERSONAL SERVICE of this subpoena,please sign, date Please Return The Attached and return this waiver to the District Attorney's Office to confine your attendance. Waiver Immediately If you sign this waiver,you are required to appear unless otherwise notified. If you have If we do not receive this signed waiver within 10 days, we will pursue personal received and this subpoena live out of state please call and ask for service of the Subpoena upon you. travel and hotel arrangements. I acknowledge receipt of this subpoena,waive personal service,and will appear If you are a minor or parent/guardian as directed. of a minor who has been subpoenaed you are hereby commanded to produce the minor at the above listed court Witness Signature Date address,to give testimony until excused. Make Address Failure to make all necessary Correction Here arrangements to ensure said minor's attendance shall require you to appear Home Phone: Work Phone: and show good cause for the minors 191312030015 M failure to appear. So ut,ali ► E7€1L• €T' ' d'E - .:. n 4?e' %. - .`fry:, .. ' li 7 vt---"( ' srkt€ a Advance, : , , ,..,............„„..,.. 14, Sound Level • . . ..- .t. ..., : ...„.,. .. Meter •, .,,, l', � .�, for Arc h its ctu ra 1 Environrnëntal, t 4- ' lir i , - �0.., . ' laltileiii.: • � � odu * j\ii _ fie r t g 1 .of I ..- . 4' . it, V r C �� , .11.:.1.. I A PCB - EZOTR•' , ►y Phone 716.9 . :43 oll-Free in US :.258.3222 ;_ ❑_, .- mss. ,. 1r t---- Standard 1/2 inch 14,,,4,.. f. Free r ir.lrl Or 4,.r, ,, t zr goer 1r in-egrated Preiamp Fier �.. + �t rtidle, q�„ ill 1 Mill •• Larson Davis o 8 � f M Sound Level Meter . ,\ ,. ., ��. Applications: 1 ■ HPO selection ■ Class 1 sound measurements to the . latest international standards • Noise reduction validation " ,• • Environmental noise assessment and ■ Product quality control .13 0k.:aws 1 monitoring ■ NVH correlation i .n 'I F.6 thl1 • Reverberation time measurement and ■ power Mmin 25.1 dB Large High Resolution In-Situ sound measurements �'� as t Ewa Display building acoustics • Code enforcement „ ;4i i.52,41 4 • Tonality 4 r+ h '" One-bunon Access to • Occupational noise evaluation .4*----- Measurement Set-up Features: sn°r•rs'°`t "44% ■ IEC 61672-1:2002.ANSI S1.4,ANSI S1.43 Fig.1 1 _.4 Run/Pause Control Class 1 integrating sound level meter NIoJc ! +you[ ii • Real-time frequency analysis in 1/1 and 1/3 octave bands,compliant with IEC 61260:2001 Display Navigation / ' • ot and ANSI S1.11-2004 Class 1 a Back-lit Navigational ■ Large,high-resolution screen,easily readable Dual Purpose Start/Stop _ Keypad in bright sunlight • Robust battery life(24 hours on 4 X AA Reset/Clear Memory 3 System Set-up Access Lithiutt batteries) :`' y' tr' • Simplified system and measurement set-up - °Nwoo through a"mobile phone like"interface RecessedOn/On Button ■ Lightweight,ergonometric design ;;i ■ Soft keypad for 1-handed operation • Standard USB interface • Dynamic range in excess of 120 dB �� - .- -._ -> _ • Logging of broadband and spectral data to obtain time,measurement and event histories on the instrument ■ Sound recording in.way format for event, manual or time based trigger USB Host(Thumb Drive i IMIIIIIIIIM 'E--Headphone Jack Noise ■ Utility software included for set-up. Source Control archiving.export and reporting Storage.CPS Receiver) +' r �N • Supplied with heavy-duty Pelican"' YUSE3Carrying Case MasterPower Toggle Power The Pelican trademark is a registered trademark of Pelican Products,Inc. Multr.lunction Connector (External Power. dWeather Sensor Input) Larson Davis I Toll-Free in USA 888.258.3222 I Phone. 116.926.8243 I www.larsondavis.com s p{tir [I ET :orTtla7ER CO _.f ' ::- 1�� .. ... - i. , t .' .7: - litillIaL....:-°-‘. mom—gaps ., II ... w .. - - - - • - -may t ® 1 .„x ,a �,„' " - ;;:c* • . , • ii.ilie'''< �r I� a _ ..r - V '1..i ' 11:: 'il. -•.' •' �' .. r, ;oft. iii,14, -- _ . -41, ..A,,-. - ,,-,;.,.. v i 7. a Y 1. � 0 z` Introduction The Larson Davis Model 831 Class 1 Sound Level Meter,with its high Model 831 Firmware Options: definition display,is extremely versatile,performing the functions of several Code Description instruments. It puts the combined features of a precision Class 1 sound level meter,environmental noise analyzer,personal noise dosimeter,and a 83t'083 1/1 and 1/3,Class 1,octave band spectral analysis real-time frequency analyzer in the palm of your hand. The Model 831 is a eat-1N Industrial Hygiene or personal noise dosimetry fifth generation Larson Davis sound level meter,designed for simple,single 1t31 LOG Time history lagging at periods from 2O ms to 24 his handed operation,yet is fully featured,smart and versatile with an ever -- Automatic Fast time history logging at 2.5.5 or 1 O ms periods • expanding firmwareplatform. The design of the Model 831 was based on Automatic event detection,event history,and measurement history P 9 9 831•ELA (1 min to 98 hour intervals)combine with 831-LOG for event time countless inputs from customers. It expands upon the Larson Davis tradition history and 831-SR for event sound recording of delivering value,innovation and function in a rugged,single-handed, 831-SR Sound Recording to.wav files at8.16,24or48kHz expandable package and is backed by a 2-year factory warranty,24-hour ,831-RT I Reverberation time measurement.computation and display application support and accredited factory service/calibration. 831•FFT Fast Fourier Transform up to 6400 lines 831-COMM I Advanced digital communications via cellular modem The Model 831 Standard Features: ,831"MSR Measurement History one Sound Recording ■ IEC 61672-1:2002,ANSI S1.4,ANSI S1.43 Class 1 integrating sound level meter Supported PC Software: • Voice Annotation • SLM Utility-G3 — PC software supplied with the Model 831 • ANY LEVEL Display that supports full sound level meter control, in the field • User-programmable run modes firmware and option upgrades. data export to Excel4, and • Six user-selectable statistics(Ln) includes an integrated "Screen Grabber"to display the SLM screen live on a PC ■ Threshold exceedance data • DNA —the analysis, post-processing and reporting tool for noise• Community noise calculations(Eden,CNEL) sound and vibration measurements. DNA delivers enhanced • GPS support analysis capability, sound playback and graphical reporting, • Back erase functionality Graphs can be annotated and shared amongst multiple users ■ Normalized spectrum using DNA reader software. • User-selectable screen layout and lockable set-up protection • Software Development Kit (SDK) — toolkit for developing custom applications for the Model 831 • Remote access and field upgradable • 3rd Party—the Model 831 has been integrated into various 3rd • Wide variety of non-proprietary powering options including— 4XAA internal batteries,AC,USB and external batteries party software packages including software for airport noise management The Model 831 offers a complete solution for noise measurement. Whether in the office or in the field, the Model 831 can handle your sound measurement needs. • Excel is a registered trademark of Microsoft Corporation in the United States and/or other countries. ,-.,�. :tilcsl, Larson Davis I Toll-Free in USA 888.259.3222 l Phone:716.926.8243 I www.larsondavis.com , „..T_:_.,_. .,. . .D .. KNOW . . c`- ...We Carefully Considered Every Design Element ,o Viltdilip p` _ - X7,....4.se far releJ.5r Iris draws cywy art (;...j.) • ., - Keyboard Features: :."` Much care was taken when designing the Model 831 keyboard. To , --. reduce extraneous noise, the keys are manufactured of silicone to ",., 1, eliminate audible"clicks". In addition, the ON/OFF button is slightly :4, recessed to avoid accidental power off. Together with the backlit display, the illuminated keyboard permits nightly operation indoors as well as Le K.y: ,d, "= outdoors. Finally,a raised thumbrest allows for careful positioning during III7,r Ai .bid`3P ` 3 °" " _ measurements. tom. -41.e s.s.d A..., T 41/01/1,:.. • .J.asi earN?..47icts M r .sesi sA sw,asts ata.,41q s' �; j� Avoid Acoustic Reflections: • To reduce noise reflections further,a noise cone was added between the preamplifier and the sound level meter body. The keypad is situated ' below the screen for ease of use and is slightly lower in height which positions the user's hand lower on the body allowing a free flow of acoustic waves.The preamplifier connection,the bulkier head,and the lowered keypad t to the 831Class 1designation.o e ed e a o bu e Model YP • 4 Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis.com �t, #, t NIA ,, I\':-;'`,.'kg,'1:"'::.7,',PT]-7--.:-':-.:-.VVWIritr r art7f' VIS COM • ....„,,,,,,egt..1!-7.4,-„,, ..- l i \,_ ' r, Material Features: - V When selecting manufacturing materials, the day-to-day operation for —., users was taken into account.Advanced sound level meters like Model 831 are often used outside.The display with nigh readability in all lighting conditions is protected by a scratch resistant cover. A high impact plastic housing supports and safeguards the instrument for normal use. „In:,ve.,st f _.,. �n �trivdsJ pia' 0 .. _ 7= • _. {wrxrwwr.ww' ',Alt divestt ' F. �i eO W'1e.X4.7ufean C for mil, d5t1 foI Peaar Access Features: ..I PC eore'real , The large battery access panel allows for easy exchange of batteries. Extra connections are grouped at the bottom of the instrument w-th PC -" control and power supply combined via a single cable. N f_rsa.s...a11'-d.±fwr`.d Fl— jar ersy y.rnafw. are `S. fie'?/ ,„_,� �,,, ` O.r.-....o.✓dri rr.'df.�.rr -L- ' I..., ':....7.::!:,, 1. Single-handed Operation: A ,, .. ., .14x'11 feel'S rilArt To reduce acoustic reflections during measurement, Model 831 was - ' 1��s. »,.,gs designed with single-handed operation in mind. The soft grips combined with the overall inverted cone shape allow the meter to easily fit in the hand,without permanent finger pressure or user attention. For extra • security a lanyard is provided as a standard accessory. Larson Davis I Toll-Fros in USA 888.258.3222 I Phone:718,926.8243 I www.larsondavis.corn • it "..t.s}� i 1 4 i , 1 fr- la ,L......._. . ! r.... . • DAVIS LARSON � :. A PCB PIEZOTRONICS DN. <=. S Standard Fe. u es . When performing noise surveys.it is important to have a fully capable sound level meter at your fingertips to capture all of the essential data. How many times have you brought along additional equipment to log information such as :i. GPS location,temperature,wind speed,and other environmental parameters? _ • Then, how much time did you spend after the test memerging that non acoustic * .. data into a report?Have you ever lost your measurement notes,or worse,forgot 1117. to log the information properly and then had to either go back and reacquire the data altogether or simply not report it? At Larson Davis,we recognize the value r of measuring non-acoustic parameters in parallel with the acoustic data.The j ®al Q Model 831 firmware allows you to connect a variety of external sensors to log these non-acoustic parameters. • ^''---- ~r Extended Power Operation I s ,.. A variety of powering options allows for flexibility when out in the field.There is no need to worry about proprietary batteries,cables,etc.since must power �I MONITtG srsII options are"off-the-shelf items". Great care was taken during the design of the Model 831 to ensure low power consumption,further extending meas- urement time.With(4}Lithium AA batteries,up to 24 hours of 1 second LAeq with 1/3 octave data can be measured. • Model EPSD311032 Options include: f inerglass NMS el t..lrn IF e(ti;Solar power) ■ AA batteries:Alkaline. NiMH rechargeable or 1.5V Lithium ■ USB power from a universal AC power supply tPSA027),a PLC or a powered USB hub • 12 VDC from a DC power adaptor, 12 VDC battery, or car power connector When using 12 VDC,the Model 831 can sense a low voltage condition and shut itself down automatically then restart automatically upon power restoration to protect external batteries from damage due to over-discharge. llLarson Davis I Toll-Free in USA 888.258.3222 I Phone:715.926.8243 i www.larsondavis.com t �. •-• .4 . - ,-J?rndavr .cm , 7,,„..,„...:,....,„...,.....,,...„,_.,,..„.., ..,..,,,,..,,„,..,.„....„,„,„m„,,,;,....„.„.....,....,..,.......,,,,..„:„..,:„. .,..,.,,,.. .,..:„..::, i, 0 -0.---..,. , , a r': r 6 r ,:i I.,:, , WO cii .,341,019, 1 41 .!iii , i — '.41/4: , O a:04:24.C ► .. ANY LEVEL Available Broadband Metrics The Larson Davis Model 831 provides an ANY LEVEL feature to preview dB a C z and review acquired sound field measurements utilizing multiple time ley 67.3 '5.s 79.4 weightings(Slow,Fast&Impulsive)and frequency weightings(A,C&Z). LL0,1s ✓ ✓ ✓ Max s 77.0 90.1 9_.t --- Max F 34,7 43.0 44.2 This feature allows the operator to easily view and acquire measurement LwS ✓ ✓ _ ........._ Max 1 80.4 94.4 95.7 data with the desired settings and ensures the correct values are twF ✓ ✓ Mir,S 51.2 62.1 64.7 measured. With the 831-LOG option all of the various measurement Lwi — ✓ f Min r 50.5 60-7 63.0 ! parameters are available and can simply be selected for storage and L Min I 50.9 62.7 65.1 • download. Pre-selected detector and frequency weighting are used to °K / ✓ r Peek 91.5 t02.2 102.8 determine the metric sampled for statistical and event data. Overall A C Z LEO ' ✓ ✓ ✓ Six Different Run Modes SMax ✓ ✓ */LwF Max ✓ ✓ / a;m Ti___ 0:09:24.8 The Model 831 has six(6)measurement control modes to accommodate , — close a variety of field situations. ,Max ✓ ✓ ✓ LwS,Mm ✓ 1 ✓ ✓ Fig.1 • MANUAL—typically used for walk-around surveys. Ideally Lwr,min ✓ ✓ used with the Measurement History (MH) to give a quick twi,Min�y'� ✓ ✓ ANY LEVEL allows the display of all overview of the averages, the min-max values, and store ✓ ✓ ✓ acousdcparameters simultaneously tws multiple measurements into a single file. -- Lwr ✓ ✓ ✓ • TIMED STOP —operates for a specified period of time Lwi ✓ ✓ ✓— • CONTINUOUS—typically used for longer term monitoring,it LPtaK ✓ ✓ ✓" . allows storage of data files daily or even multiple times during .' the day. In this mode the Model 831 will start automatically Dt;•• No- upon powering.This is required for instances of power failure in remote locations. • STOP WHEN STABLE—typically used to assess workplace noise exposure. it stops when the LAeq is stabilized in a - •— — - narrow range . — -► • SINGLE BLOCK—a start and stop timer controls the sound data acquisition II MULTI-BLOCK—three separate time periods, of which one -•. "" can cross the dateline • ,..._. NoiseTutor Environmental Noise Monitoring System Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 ) www.larsondavis.com ,,..-. . Normalized Spectrum • 0:03:31.0 ' ► I 831-0B3 Frequency Analysis firmware allows the user to compare the Normalized Spectrum frequency content of various 60 -60 measurements using the Normalized 4o -4o Spectrum function. Inverse A and C u „_.,,__,..indOIIIIku. �o Fig.2 weighting filters can be applied, as .2Q"I .zo L,e DTsaMy al Triggers well as user defined curves to current ..4p During Measurement - measurements and graph them relative 460.--... -•so to each other. For example, when 1/3 Octave 1.00kHz comparing the noise signatures of sPl • 8.5 dB ' Larson Davis various machines, a reference Ref: t .. A measurement can be saved such that DAGraph Reative subsequent measurements can easily 3 be compared. Live 17-Aug-2010 03:23:54 Set Close Edit Fig.3 frx e,r s s, t':�, zed SpeC1.vR7 Dsl'r crr-dances 00:00:17.9 ' I Two RMS and Three Peak AS>es_o do 20 - Threshold Triggers 0.01:23." }, J Trigger I, :1►I Another standard feature of- the 4 " AS>65.0 dB 3 Model 831 is the ability to define up 0:00:10. �. -Trigger levels Peak>13'08 0:00:01.27 • SSPt 1 065,4 d8 to two(2) RMS and three (3) Peak zxal >137.0 00 z threshold levels. During operation, 0:00:01.1 2 035.0 dB Model 831 will count the number of • :>140.0 de 1 Peak 1 135.0 dB threshold exceedances as well as the 0:00:00.7 cumulative time of exceedance.This Run tzars time O:Ofi:57,3. Peak 137.0 d8 information is available real-time on 4 Menu ► Peak 3 140.0 d6 the instrument display as well as I- ( p included on any measurement files transferred to software. This is an 1111110 AM 4111■ ideal way to keep track of limit and 0loiIS1QlE RUN.�4�r action values according to EU r Close 1 Directive 2003/10/EC. I fq - r Back Erase 0:32:24.0 ` II Simple transient noises such as an ambulance siren or dog bark can 1Live ► ' kerroneously contribute to an outdoor 760 �jj� a -• measurement.The Model 831 includes osi, �! `Opts a Back Erase feature allowing for the 120-ii removal of the last 5 or 10 seconds of a - measurement and recalculate the so• • ' • ii measurement parameters automatically. ` ?► To ensure proper bookkeeping, the ao o data is annotated so it can easil be 1s} Y LAtq( , E...d8(l identified post test. LAeq 73,2 dB , t.Zpeak 115.4 de Started 17-Aug-201003:40:53 .. back 103 (► Fig.5 - Sark Lrasc Ltispl ii IILarson Davis I loll-Free in USA 888 258.3222 I Phone'716.926.8243 I www.larsondavis.com •-H L g. �P . ..,__. a av .r, . 4.....„ • .....-------- . .,. _yip._ ,./4, Voice Recorder � --''" e•ecar.er.. The Model 831 allows for annotative noise measurements with a voice — memo via a headset plugged into the :F � AC/DC output jack or directly through the condenser microphone. Informa- Aallify ' `t' Lion can be played back through a I. , headset directly connected to the in- ' strument or by downloading the data file to a PC. • Close I -44 Fig.6 Voice Recorder 0:06:37.0 z ► Mark Sound Type 11D- Mill .i Ten Annotation Markers To further annotate data in the field, roe the Model 831 allows the user to 6g. enter up to ten 1101 user-defined ill i7. Markers which are easily accessed r' l Aeq(t s �~ • through the main measurement ) ❑ screen. For example,during a traffic 48.4 ❑ AutOmob e •. noise measurement,markers such as dB ❑ r otc.rcyde "Truck" or "Motorcycle" can be ❑ Aircraft queued such that they are quickly 1 ❑ Exclude ready to identify certain events.Time ❑ z° history data is then tagged with this IRec Close none, .-.-..-,.m.:,,,.: x••-• _...., #`" r•"•" ``t ' Marker for ease of reporting.When < equipped with the optional 831-SR Fig.7 „m..tuni Q.____ I...-� . Sound Recording firmware, the 1lRodei 831 weaoptircr831-SRSoundtwc.- Reco drug nualsoun Ore screen Model 831 will also automatically aceess to manual sound recordings and ke. Sumo'QV1.• _ take a.wav file sound recording when exceedance markers. alt N°rte t,, a Marker is engaged. teamatte fie Una+io!" " 't. Ovel User-selectable Screen Layout �.t=zoawtleisue The powerful Model 831 user interface can be tailored for a wide-variety of ^te Y end users. While the acoustical consultant may like to see all data parameters,a code enforcement officer may simply like to read the Leq or k"y°` Peak dB level. In addition,the sound level meter may be utilized by untrained }Vermer - personnel who are unfamiliar with the set-up of the instrument. In this situation,the Model 831 provides a lock feature so that set-up parameters cannot be modified without entering a security code. Modifying the user interface of the Model 831 is easily done via the keypad or SLM G3 Utility Software.Various set-ups and configurations can be created within G3 and Jaw metro.= transferred to the sound level meter such that they are easily accessible. c. Fig.8 Customizing Model 831 Instrument Displays utilizing SLM Utility-G3 Software Larson Davis I Toll-Free in USA 888.258.3222 I Phone: 716.926.8243 I www.larsondavis.com 44 s LL w • '!:-.--``."--14 :-..-;74. ' ;'4-.::'::::;'''...:•'- . . , -- • . .. '. $1..4. -. . 1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ! :.,:iit:. + T Weather Measurements ..''''2:"C7,4. .<. .7" ,7:''' ue 1+re t': ' ' y ""Y.7", ' '.:"„-.a The Model 831 can be configured to log weather parameter data in the ails �"-.4 i' may;: . Time History along with all of the normal acoustic parameters at rates . a y 4r:""*" up to 1 sps (sample per second). A wide range of meteorological - `- parameters are available including wind speed, wind direction, °-. temperature,humidity and rain fall. Combined Meteorological Unit lSEN031 Vaisala WXTS i. • ) ---rg Measurement Method :0 USB Ilea sensors with Jllra-o"IC wind sensors Over,e'.ai port Connectivity USB to Model 831 or 831-INT I-ET) Measured Pa ameters Wind speed and direction,temperature,relative humidity, barometric pressure.rain fall and hail rk--) 0• 57.3 4 i 0:02:58.9 4 II _ 1.c.3.1,:-.., 'Live l p • • Avg. ]Windy 2i4 le-N.-N.7 Rate , - ` i 1 g • 5. . I d v 0.01 :.4 , t.. Gust in;lyr � . : : ti 9.62 MPH 2.r .::SW ' Temperature Hail Rate ..N,,- 65.55''F 0.00 z, lik Low:65.12 High:65.66 hits I in 2h * u `'v.rm` ! Humidty v Ca li,tN.4", 60,84%PH I k Lowy:56.20 High:63.10 Run Time: Qt02:5.5 ' iv% II Meru ► Menu D ,,,%%1 gt --wwww0la. '- '' ... r.‘,.., z,ti r ', =• 9 yy r� • ...... I F77 L J Fig.9 Broadband � A-Todel831-INT Docking :;1',..1:-,' i. siphon Configwairon _. r._ m �^ 1 at 1 w;,.•'" Y-,-..i.1:,,•,_:, .S[^1031, �i Internet �� IC0M-RAVEN-XEI USB to Model 831 IIILarson Davis I Toll-Free in LISA 888.258,3222 I Phone:716.929.824's I www.larsondavis.Corn ..i:74.,--,F, - , -i*- ' ,.:•:::*j,,,.I ,. , , . 4-4", .. , .. larii nrinellrEft ro , .1 44:,..„ -.-.. ---, it _ +.. ,, •,i,,,,, • -' iii. Aso . t �.,� iii - ! l. I r . .!,• 0d ;ttt ; __ II -.. ,_: IS ;,8),''' . : IC,fikk 7"• :,- .i... •,,`...-.,, 4. ' ..41, E C .I .. . .. ,. • • ,. ,, , ,. --c: i_ ; ,,, �• tp. ,. m"Ill __ ( �� „ . . 4. _• • .i.„.„..„ .rte • " ' Fig. 10 Noise map created using web-based GPS mapping Global Positioning System(GPS) • Commonly, users want the ability to use GPS to log the location for each measurement,which is very �O�Lx beneficial when performing environmental noise surveys that require multiple points around large buildings or when mapping noise along a roadway. To meet this need, every Model 831 Sound Level Meter is equipped with firmware to decode and log GPS position information from an optional external GPS antenna (GPS001).When enabled,the GPS will log in position automatically at the beginning of each measurement """ • run 1831-ELAI.In addition,the GPS signal also includes a highly accurate clock that the Model B31 can use • to automatically update its internal clock as needed. Once the data is downloaded to a PC,the location li 41 information can be easily imported into mapping software to create, in seconds,a very powerful report showing exactly where noise measurements were made. 4 .4ai ., Location and Timestamp with GPS001 Time Synchronization Automatically performed with daily auto-store Location Latitude,longitude and altitude with measurement history Model GPS001 • r- q1F= C '-.ri if4:-P'4 P3,72:i,.t" _.ila 1=*.+w rr,te.' 144.4,11 _1 �' ir,aN is > >71K r':•"a:'tr, central i y8 asa 3. E .. .. —.I m. I.€o d : ., V.ete j R ., 1a M P `s ._ • $ - % • _. , - :: .tH.. v r at 6w k,_it 1.1448x Forme. `., w • . _ o-, 4..--et..;• AS-5'J .. " ..4 63".:W'. `:.FC".S'❑ -. ':rl ,...7,,,,,e", 3w ,Vatrivtf w :.<S2 .i.IPla E t.• .. i- A fi C tJ E F v H f I , J h , 1. 4,4 it 0 P 3 1 Re-coedit Latitude Longitude Altitude Date Tent Duration Run nine Pause LAeq LAE LAFmin Time LAFinax Time LZpsek(max) Tens 2 1 31'14 44 121'29 47 31 2 O. 2008.13'27 16 07:02 00 00 10 6 00 00:10 5 00 00 00 0 55 660 0 54 5 16:07.02 58 9 16.43704 90.4 16:07 O6 3 2 31'14 49 121'29 48• 15 4& 2006r13d''2T 1663 18 00 00 11 1 00 00.11 1 0000 00 0 67.7 60 2 55 0 16 x:27 62 4 16.08 10 96 0 1616 19 3 3 31'14 52 12129 62 50 9 6 2006+1027 16:0922 00 00 11 7 00 0011 7 00 00 00 0 60 8 71 6 69 916 0033 616 161934 92 0 1609 32 431't 121'2966 552k 2006-1)27 16134300Ct114 CC05114 00000c0 6.32 e: 9 161064 693 16 10 46 951 171 1043 S _ .. J',.E.t :-:'-':E' }.._ In 12 A O C,^ 1 7... °1 r's':,,7 L 7 . - -, 1 :,C "'If fE 11 15 3 15 2 76 I Fig.11 Export the"Measurement History"tab directly into a web-based GPS mapping software(shown above).This tool Used with permission from Microsoft.Excel is a registered ill will retrieve the appropriate map and add the acoustic parameters to the map automatically trademark of Microsoft Corporation in the United States and/or other countries. 41111111111M Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis.com II .. 40' abla., 1!i F .'. • b Y 41�{,!- r YAW • ii ,.f r '• .,... . r a �,„„ , .....L.,._ ,i ,. ,...,. _ . _. , . ... .T „. . ......._______ . . d� . • _ -, 4:32:59.0 4:33:37.2 * Di Model 831 Options: IM C.. eralt —ID =overall '� . ° I 1 Octave Band Analysis (831-0B3) .. . . . . . .too. In many applications,it is important to acquire both the broadband level and io•• _ - b0 33- -. iI1Qllilli fSileft... . -33 spectral content of noise data.With spectral information,the source and 2p..-.■:�il==��. , °. ',1 I!iilllIIIIIIIIII(IIIIINII_° content of the measured overall level can be better understood.Constant 1/1 Octave. 1110kHz 1/3 ciCto.' i.00kHz percentage bandwidth filters(1/1 or 1/3 octave)best approximate human Aeq 46.1 de LAeq perception to sound. Option 831-063 firmware enables simultaneous real AFmax 80.9 dB LAFinax 77.1 dB time measurement of 1/1 and 1/3 octave Leq,Lmax,).min along with all the AFnin • LAFmin ANY LEVEL broadband parameters. Option 831-063 is compliant with IEC 5113 46.2dB 511.4 4s.0d& 61260:2001 Class 1 and ANSI S1.11-2004 Class 1 standards and covers the Run Time: 4:31:59.0 . Run Time: 4:33:37.2_ entire frequency range of human hearing:6.3 Hz to 20 kl-i.for 1/3 octave . 4 Menu ► 4 Menu I bands. When 831-0B3 is combined with Time History Logging(B31-LOG)or Automatic Event Detection and Event History(831-ELA)it is possible to re- Fig.12 Fig. 13 view the frequency content of logged data or specific events. 1,'i tktai e L' 1/3 Octave Display ro ae so i 11. 1gi 'I L Fig.14 Fvents Fatracted from Noisy Data t 6K Jr SK 60 yx 4x d8 4. 2K N.• 60 . J( C I 101�I t 63 11.1 375 t , n 30 31.c, Fig.15 t5I ?rItu .- i ° fl 1L1� `r tE .. Spectrogram of s .i.-1 a' 20 x _-__ — Events with High e.00 a,.. 4z W,• r * •a?Au X43 .ib Frequency Noise IllLarson Davis I Toil-Free in USA 888.256.3222 I Phone:716.926.8243 I www.larsondavis.com s24 -.--.‘,._;.-7.,..:_-.72:,.._._w:- sf-.l-- Y xf Ei� A r'^ '' mr '�iii!' _ s . -<v '�. cE a r Gra � i�!:; • ,, Industrial Hygiene (831-IH) i The Model 831 is available with two(2)virtual noise dosimeters compliant with ANSI S1.25 and i IEC 61252:2001,each with programmable threshold levels. This is very convenient when performing worker noise exposure assessment when coupled with the 1/1 octave band spectral analysis for hearing protection device selection. Typically,the characteristics of the hearing protectors are stored as one of the four reference curves on the Model B31 for easy on-site"what-if"measurements. • Logging (831-LOG) & Fast Logging (831-FST) = ' � -t *pi� .- ,. --, Y • s ar =.1'fig s _(.:.. :;a -. .=�� . w &` {Diu fbw fitM/..w Mwbt.yRq.b .. _--_"'-- • .-.___ p-•-...�.. ( tr."` Fig. $ _. 2 ..;„, 1 - ; t DNA Software Time s + p.: ;. M�.. History and Hourly •, t .4�_ a ---17t=4;. .,..* •;; ' r....... =,c Interval Graph with ,7 .,4,�- 1 _1_1 l'I' =- Color Spectrogram - ._ — ,-.4_ , Jilesip° ' r.� T 0 -' . it..k ,..' e' ....�, - . .. - MIL,,.)4.. . a •,,k,,,,,-;. .v 3 i C; Q The Model 831 can be used to record the evolution of sound pressure level over time as a Time History(TH).The Time History is then used to profile the observation period, "11,7.,..7. . . .. . - which can vary from a couple of seconds to continuous monitoring. .:....-., - Larson Davis has enhanced the versatility of the Model 831 Sound Level Meter with the addition of Time History Logging Firmware(831-LOG). Users can pre-select from 'war Tau --.-—' logging periods as small as 20 ms to a full 24 hrs. With time periods greater than or �� _ equal to 100 ms,up to 58 selectable parameters can be chosen. Selections consist ...Waft. NDIVAW of familiar acoustic metrics as well as non-acoustic metrics,such as battery condition, vi" ., L, outdoor microphone performance and meteorological data(831-WTHR). • Special acquisition circumstances may require the user to acquire time-based data v. lA r swifter than 20 ms. For these occasions,Larson Davis offers 831-FST firmware,which as,..a4 1 .elk. ions of adds the additional sampling rate opt o s 2.5,5,and 10 ms. ...,. Fig.17 Time History Parameter Selection in SLM Utility-G3 ii 0 ....L.L." , il !r1`„.. Larson Davis I Toll-Free in USA 888.258.3222 I Phone: 716.926.8243 I www.larsondavis.com la Measurement History (831-ELA) MH records are time-based when run mode=continuous.but in other I run modes like manual, they are not. One of the benefits of MH While time histories are typically logged at one sample per second,it is i history is the ability to make a series of smaller measurements.MH convenient to view longer term averages of measurement data to more ! records and combines measurements automatically into a single easily ascertain trends.i.e.10 minute or one hour averages of various noise composite measurement and puts everything into one tile. parameters. The 831-ELA firmware enables Measurement History(MH) which logs parameters similar to the Time History ITH)yet looks at the ® 0:20:54.0 7� ► O 0:21:21.9 . ► average,minimum and maximum over the selected interval time. MH and TH can run in parallel or independently. LEJ Current ► hij I rieasueer,ent ► tso• Record 3/21 When the Model 831 is set to"Manual Run" mode,MH history can be . Duration 0:01:00.0 used to construct a noise survey. Data for each measurement or location uu- X012-Ma►-05 16:12:00 is saved individually and may include the Ley. Lmax, )min, SPL, and I-IJ statistical distribution of the SPL(Ln). ea will MH records are available for easy review on the Model 831.the current • ion. measurement is visible on the "Current" display tab,while completed ;:o F.f). measurements can be browsed in the "Measurements" tab. When LAeq 51.0 dB 0 _r Illlfi(l(ngI) ; combined with 831-LOG,the time history detail of each measurement can LApeak 81.1 d8 be viewed quickly using keypad shortcuts. Finally,an automated sound LAeq 63.2 dB recording at the beginning of each measurement can be achieved with 831- L.t.3rt d 2012-Mar-OS 16:30:00 1 AFinax 84.1 d8 SR firmware. 1 Menu ► 4 Menu ► Fig.18 current Measurement Fig.19 Measurement History Display Summary Display Automatic Event Detection and Event History (831-ELA) In the Model 831 events are defined as either: ays a.v=s . • Exceedance of a fixed threshold level for a minimum duration ._ • Exceedance of a dynamic threshold level for a minimum duration ° e • External trigger set by the digital input signal [ii - -_ - . . - - f srA u MIINIIIIIIII tr- ...... '. ....., ....mom. _--.- _� .-o-v.�.-.....�•nr.m. tkv:}.14tr It+�.MA' Fig.20 Event Definition on the Model 857 Fig.21 DNA Software-- TH with embedded.way files on event,color The Model B31 includes basic exceedance logging functionality (see spectrogram,L95 and 1/3 octave frequency analysis "Threshold Triggers"on page 8).However,only the number of exceedances and cumulative time above threshold values is provided.With 831-ELA A "Dynamic" trigger method can 6 0:34:13.5 E ► firmware,you are able to define the attributes of an event including thresh- also be selected in the Model 831. old level,duration and hysteresis.An event is considered"Valid"when it The dynamic trigger is set to trigger r-I-- ----- )E �-as ► meets these criteria and ends when the SPL drops below the threshold level when 185.L90 or L95 is exceeded for a specific period of time(Continuation Period). The user is provided trig- by a predetermined number of .' Event 15'1 Duration 0:00:05.4 gering status updates via triggering icon graphics,helping to identify event decibels.A rise time can also be _012-Mar-o5 1.E.:43:51 progression and qualification(see graph above). specified to determine how quickly Ei LAeq 79.9 dB the meter responds to changes in The"Event"tab contains detailed information on each event including. the background noise level. By I_zpcak 113.8 dB • Time and duration of Event utilizing the dynamic trigger, the LAFinax 86.1 dB • Lee,Lmin.Lntax and Peak SPL number of false triggers is reduced 2l2-Mar-05 16:43:52 • Frequency analysis of event(with 831-083) and events(significant noise above LAE 87.2 dB • Sound recording in.wav format for source characterization background level) are better EA 211.4mPa2s (with 831-SR) determined. t • Event time history(with 831-LOG).Time history period can be 4 Menu ► different than that used in overall TH measurement Fig.22 Lvcnt Detection Display Larson Davis ) Toll-Free in USA 888.2513.3222 I Phone:716:926.8243 f www.larsondavis.com on the Model 831 - • Hear the Sound Being Measured (831-SR) -==-. Y Measuring sound levels is a well-accepted way to objectively quantify . the noise radiated by a product in an environmental survey.But a sound pi .t` pressure level or octave data only provides part of the overall acoustic -.. "'*"41""` picture. How many times were you asked"are you sure that the spike in p' the data is actually the noise of the product or the actual environmental I event of interest?"Rather than rely simply on the'objective' data why not record a sample of the sound to truly determine if that elevated noise ' level was a police car driving past with its sirens on or a noisy dog barking „4W' at the letter carrier. i 1 When recording raw time samples for playback,users can add the 831-SR ilaallit firmware option.This option allows for high fidelity recordings up to 48 kHz sampling with the Model B31 either manually or automatically, based on an array of triggering options. - Option 831 SR Features: "��"""i"�`" User-initiated Recordings' """«lleOWMil* • Manual Sound Recording User controlled recording duration,acquired during operation, up to 48 kHz • Marker-based Sound Recording-User-initiated with user- defined duration,acquired during operation,up to 48 kHz - Automatic Recording Mode: • � When the 831-SR option is combined with other advanced logging functionality in the Model 831,it is possible to start and stop recordings based on a number of advanced measurement events.This allows the user to only record sounds associated with specific noises as they occur 70:17:51.6 ' I 6 o:so:3.0.7 / rather than recording many hours of data and having to'find'these events -. .. .... ..., ,; after the fact in post processing software. I '1 I __r,i ,r- ;4[ l EVE,. I—`► 140 Option 831-ELA Recordings: - ' *Event 1/1 100 Duration 0:00:05.4 l • Event History Sound Recordings - Acquired upon i _:r1::-Mar-DS 16:43:51 ' events meeting preset conditions with fixed or dynamic ro• 47 LAeq 79.9 dB triggering available • Measurement History Sound Recordings - Automated `° LZpeak 113.8 dB sound recording at the beginning of each Measurement History LAeq(1s) ❑ - LAFmax 86.1 dB Note: Event&Measurement Sound Recordings can be enabled at the dB ❑ orcyck 45.2 O Autd1'IOUE —. 20112-Mar-GS 16.43:52 same time. ❑ Aircraft 87.2 dB These recordings can then be downloaded to a PC and stored as.wav ❑ Exclude luxe EA 211.-4rnPa2s O files using the included SLM Utility-G3 software or the DNA advanced E O #15 post processing and reporting tool. itec Close Done f 4 Menu Typical Model 831 Sound Level Meter Ranges Fig.23 Fig.24 Iwnen using a microphone with 50 mV/Pa sensitivity) A recording icon will appear on the Event Indication Display on the Instrument Gain Model 831 display R r-t dir1,g Model 831 ode 20 d e when recordings Range High Low High Low are being made. Peak Overload Level I 143 dB 110 dB 123 dB 90dB Lower level of NO Range 50 d6 17 dB 30 dB -7 d8 Instrument Noise Floor 23 dB 23 dB 21 dB 21 dfi Sound Recording Range 50-143 d8 23-110 dB 30-123 dB 21-90 dB II , .-:..... Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis.com ;.;� rely+ h emu.. J • "I -'7;;'.,:'''-'t . /. 4 $�� t IF ,+� . 1"-s;;;:- II) � .... k ate .g... ' C ' ' • 4: f ...-,gu ..d id .^ .. !�,A Z rt-. ¢ J J q r ,,, ' It., -- s .w, t d , t- t K •C t ifs �, c ` ak��-� ".... a ?� "�. y`— ,.'tee ..r"��, I { �� e.. —" ,l i7 I 1 .1k. c ; ., i_ 0:00:55.4 y III • 0 77.0:55.4 . .:: 'TIT_tY., ;. a RT-660 ► J JaT•601. ► .• 0.8- . . -02 14u- t=1.98s � .- ob. . •. .r.� •0.6 100• 0.4- . . . i'.1.0. -.;� •0.0 G1} 0 111 Octave 1.00k 111 Octave 1.00kHz(t) Teo 647ms•Hz p T20 Octave •Reverberation Time (831-RT) T30 658 ms • T30 658 ms • Reverberation times are used in multiple architectural acoustics applications ranging cnscrl? 4;a t,; nt,ie 4/4 from simple experimental reverberation time determination for room performance, Positions 4 Positions 4 Enter-> hao Data Elle --..ha.-..-Cr-i.vii e Data. to calculating absorption coefficients for material performance. Most of the time, 4 Menu ► 4 Menu these measurements are dictated by various international standards., Model 831 measures the decays and then computes the reverberation time according Fig.25 to ISO 3382-2 or ASTM 2235-04 standards. When using the Interrupted Noise RI Displays of Decay Curves method,the Model 831 not only triggers the data acquisition,but its built-in Noise Generator can be used to drive the omni-directional sound source. Recent trends show that the Integrated Impulse method is gaining popularity and Model 831 handles the acquisition of the decays and the subsequent T20 or T30 calculations completely ® 0:00:55.4 7 ■ 60 0:00:55.4 and with ease. I—)PT-5n --1►, 1--1::'T to l- ► While the use of 1/3 octave bands is the most common method on the Model 831, O 130 BT BK Ni Cu SD 0 1.00 kHz Ensemble the user can elect to work either with 1/3 octaves or full octave bands. 63.0 Hz 0 • Cu 1.61% Helping the user in the field assess his measurement results the Model 831 computes 125 Hz • • the decay times automatically, shows the T20 and T30 spectra superimposed, 250 Hz • • T20:647 ms 50011z • • • • • • BT 45608 computes seven (7) quality indicators per frequency as well as grades the • •• • 1.00 kHz • • • • • • trL 2.28%. measurement data.All these indicators are immediately available saving considerable 2.00 kHz • • • • • • 50 2.25 time. 4.00 kHz • • • • • • 8K 63.4 dt3 SrdK 8.00 kHz • • • • • T30:GS8 ms Easy-to-read screen and keyboard indicators help guide the user through the • BT -163.43 measurement. For example, a flashing red LED on the Model 831 indicates to the • aE 1,00%. user when they need to create the impulsive noise,for example,with a starter pistol • 50 1.37 or a balloon: • 8K 63.4d8SNP v 4 Menu ► 4 Menu The resulting data and decays can be exported to the SLM Utility-G3 or can he processed further in DNA for reverberation time,absorption coefficients or sound insulation calculations. Using DNA software, a full array of building acoustic Fig.26 measurements are possible as defined in ISO 10140,140.717 and ASTM standards. Quahry and Measurement.Grade Indicators ' IllLarson Davis I Toll-Free in LISA 888.258.3222 I Phone:715.926.8243 I www.larsandavis.com 'riyr . i ce r. { .. Elf'". ��`�. `•., ...0111111 !� .,,.-•�"" � ,ate :s r 1',€°7a��,0 $ � `i►Y' ,per . ,,.- ' i #5 yI..,' " r - "History , , , 3:2.5-3250H: r �. . _ ?...4w, tlmax(avg) 105,8 dB LZmax(max) 107,7 dB " Fi sebn.73 t7 „". e t,. 3_,_.`-h c Ent_w• _•iJr.g-... e 4 Menu ► * ^" "` �`° fFT A ax tracking on Model 83l - /-- - . � .v !f 1112.1 110 IA PPF AB a• -- .... -. 1;.'r x Y" • • - - x . . . .�� • .. il vqo L e - - 0 e3 1.r � • - _` Fig.28 Fast Fourier Transform Analysis (831 -FFT) DNA Software FFT-spectrogram of Stone-cutting Operation When a frequency resolution greater than 1/3 octave band spectral analysis is needed,the Model 831-FFT frequency analysis is the ideal solution. The Fast Fourier Transform (FFT) algorithm is I. implemented in the Model 831 for precision spectral analysis of acoustic signals.By utilizing a variety of frequency span and resolution settings,FFT acquisition settings can be adjusted to tune into specific Ff r_►et acoustic and vibration phenomena. J Tares w'e' ► iro- B rt:60.5 Ht The Model 831-FFT has three(3)operational modes serving different applications.The"Count"mode 90 accumulates the average spectrum and maximum for a fixed number of FFT spectra.The"Timed"mode repeats the count mode for a given period of time and accumulates the spectra in a history.The"Timed" 60' iiiiiiiimisigh mode is best suited for transient signals,while the"Manual"mode is typically used for steady state ' measurements.In Manual mode,the number of averages is open and each Start-Stop sequence adds o an entry to the history table. *Tore 3437.5 H. t pt 49.4 d9 Up to 6400 lines of resolution are available with the Model 831-FFT,allowing for detailed measurement analysis. I pn 15.0 de Ltd 38.b d8 K The FFT option has been further enhanced with the onboard computation of tonality as described in 117 ; ISO 1996-2 Annex C. Tone level,masking noise level,audibility and quality indicators are all automatically 4 computed and displayed in a simple to use interface that makes object measurement of tones in the field easy. M III Fig.29 -'5•MOTINNMICOMMMEMENMENNEMEMMINik Model 831 Tonality Calculation ll Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis.com 7 tiiiA, P. .... e F4, + w •-,� r.� -aL+art . " •oocK ei�� .. .. ...Illip 14 . . : ,ye n —_— 1 —.• �1� ,,•-i4,. ;.'-', - �l� �,r��Art +. -"_ ni. �p{ tie v> L. - 00.vD • ' ' ''''''lib.' : i• ',...'•, ,-;',..:,:.:--i-, --:,:•. 1:,;',,...,,_ar,ii•76.,:',11.,...:7-, ,.,',„:.L.ra' .7-.7:r..=.:r.1 ie—,,,,Ti. . t 1 Data Navigation and Analysis Software(StNW-DNA) Data Navigation and Analysis Software(SWW-DNA)is designed to analyze and report environmental noise,worker exposure and architectural acoustic measurements with an interactive graphical interface. • ` DNA and the Model 831 can be used in two ways: DNA retrieves files from - the Model 831 or DNA uses the Model 831 as a data acquisition front-end. r. Features. r • Remote access over modern or network • Interactive graphs with data:zoom,evaluate processing for events. masking automated placement of speaker icon on time history and running cursor with sound replay on TH linked cursors over • several graphs • Template based operation with customizable templates ./Ilt " ,,,..,„.,:••i i • .; . A major differentiating concept of DNA is the principle of separation of data and graphical layout. This allows for drag-and-drop . functionality of new data in the same layout. With many environmental studies being similar in nature,this feature allows SLM Utility-G3 for quick,professional looking reports. Software Development Kit(831-SDK) • The Software Development Kit for the Model 831 interfaces smt\ 0 oothly and directly with the Microsoft programming I+-'"+"` environment, either for Excel" VBA or Visual C++ '.I! •w.,, programming. The SDK consists of two main parts: SLM Server and the SLM Translator, •LARS0NDAVt5 The SLM Translator is the library allowing reading —, V of data files.This is typically used for automated ' Software Solutions processing applications. The SLM Server is the k.e component providing on-line SLM access and r The Model 831 has numerous on-board capabilities, yet often further control.The SLM Server supports communication ,;4r11111ft►r1 processing,visualization or reporting needs exist.For this purpose the Model over USB. Ethernet, analog modem, Edge 831 can be used as a portable instrument and retrieve the data,work as a modem and serial devices.The SDK integrates 1in,n•ri data acquisition front-end.or in combination, completely and seamlessly into the Microsofr t , f programming environment with the included , z , SLM Utility-G3 files,and interfaces.Just like SLM Utility-G3 iy The SLM Utility-63 program is an easy-to-use utility for managing the Model software evolves with theM ,el831 functions �` ,wool+ , and features,the SDK revisions are up-to- «., 831 providing configuration set-up,data download and remote access.The A4.,, Screengrabber feature emulates the SLM screen on your PC,convenient for date at all times giving programmers access `AI ON*� presenting data stored on the Model 831 or for teaching classes. Measurement to new functions and features. set-ups can be stored on the PC and exchanged with one or more Model 831 sound level meters. Data can be downloaded into a PC and easily exported to Excels for further analysis. Finally,SLM Utility-53 can access remote 831- ftli based noise monitoring stations via modem and Ethernet support. ,,,^ — Microsoft, Visual Studio and Excel are registered trademarks of Microsoft -.D° Corporation in the United States and/or other countries, Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926,8243 I www.larsondavis.com � � � . I �" � '� - ' , � '� , .�� .�t��'! �y _ . _ �._ � , � System-at-a-glance Mode1CPL250 ModvICAL200 ModeIEP32106�3 Callbramr Calibia�or � Enrimnmemal Shmud . ModeIIlOP0i1 MadelA0P0Y4 MadeIWS001 3 ModelADP034 � � 1 inch-114 inoh 71Z inch-114 incK , Tripod Adapmr ' CaFMationAdapm�CaliMa�iwAdapmr �'�nEromen : � � Motle1EP52108-2 Envimnmental Shiaud Micmphone ' � 1�G incb Free Field Model TRP007 1!4 inch Nentlam IncidentB f�; Trip�d ti4inchPmssure � � ` Microphone Model A�P063 � - I I21nd�4ree Gield 112incA-116inchPreampAtlapmr � � 1.2in[hflmtivnlisidmce � - 12inchPiuwre � __�., MotleITPPD01 Tripotl Model AOPOM �� - Model PBM831 ICP"Senso�Adaplo� '�. Preamplilie� Motlel PBN003 ; �� '� �I Pnnle� � ' ,�� I 7 J • _- __—_.�.E%JIl%7f�—___ '_——— — . � ModeIBA5001 � 1 � SpeaFerSou¢e .'Tr� MadeI5EN031 -- AGAlkaiine Wnaihei Slaiion ,CB1167 6'�. �� '�'`— -� � �OVll�OBR`. — � pA e�4thiuml _ . .. .GANiMN ---- Tripod .� - � CBL782 ■ _. ModcICP5001 - � GPS � i t � Model BA500E � ... �.. , Amplillcr , 1 �� SLM Iltiliry�G3 - � I � � LBL1B0 � i CBL140 t_,� � r . ��. -- pg i °��7`f ModeIBAT011 � �� __' �� 12V Bavery , 1' . . . `� SDN �[`o'x.'�_ ; - .. . � `� - . CBLi4J116B.� m ��. � ��. H " �...: ,� _ � � � ��.: ModaIBRi011 �. '� �Mod I FPS113U 831 IPV Bauery ', , � � ModeIP5F029 ONB � . , ,-��s. I \ � RCPd�Plvr � I �� _ . _.. _.... .. � ModeIB37ANT�ET� I ( � � �o�kinp Ste�ion - • _. i .,...3of'3�i+: Larson Oavls I Toll-FrP,e m USA NAA. �°.37'2 I Phom�.�16.4?F.H 13 I wv✓w.larFni�dav*s rr,m Model 831 Standards, Features & peal 'cations Standards Met by Model 831 The Modal 831 meets the speed-canons of the following standards' General Specifications Sound Level Meter Standards Refer one level 114.0 d8 re.20{tPa IECu167Z-1 Ed.1.0 opon5)Class 1.Group X Reference level range Single taiga range for SLM Normal for 0BA option.Gam 0 dB IT l:00651 Ed 1117001)plus Amendment 1)19.93-071 and Amendment 7(71101-10)typal.Gawp it ;w Retmencn hequacy 1000 l Ir IECb'W04)2000.10I Type I.Group X iao1c111t Reference direction 0°is perpendicular to the microphone diaphragm ... ANSI St.4.1983)R]tx1Gl plus Amendment St.4A•1985)17000tType 1 Temperature 5 i 0.5 d9 ecru between+14 roc-1721 E10 to 50°C) i ANSI S1.43.1997 Ill 211D7),Typo 1 `Storage temperature -ate 150"F 1-2050 70"Cl li•e:i: Octave Filter Standards'Option 831.083'' humility 5u03 Moroi from 30%to90%relative humidity at1045140°C) IHb I:0 Ed.1.1;(195-081 plus Amendment 1(710-all.1;1 and 1/3 octave bands.Class t,tiroup X.all fifties Equaelem Microphone Impedance 12 pF to Larson Davis 1/2 in microphore ANSI St 11.2,104 Class 1 Rare a Level km IDEA opumr) St 0.1 d9 relative to the reference range Personal Noise Onsinrulir Standards iUptinir Oil-141 Digital Display Update Rate Foul times pasecortdl0.25sec between 1pdalesiHist display indcalian is IEC61252 Ed.1.1(2002-031 Type 1 available 025 seconds anis mhunion of ames m.urenro _ — — ................................................................................. _ Effect of an Extension Cable None(up to 210 ft or 61 m with EXCxsx cable) ANSI SI.25.1991 Class 1 . ._......._,.....----.----..... .....__ Electrostatic Discharges the instrument is no mhersely affected by electrostatic discharges Safety Requirements for Electrical Equipment for Measurement.Control and Laboratory Use Exterxled Weather Options -4O to+15811-4010+7D1Cloperalon with CETFgi1-E 200i19S/EC Low Vunage Safely Oiiective Resolution Specifications IEC 61010-1 Ed.311201D-05) Levels 0.1 dB EMC Immunity and Emission Dose 0.1% 2004/08/EC EMC Daectrve Elapsed titr a 0.1 second IEC 61326-1 Ed.2.012012-071 Real vine clock 1 second IEC 61672-1 Ed.1.012002.051 Calendar Through 31 Dec 2100 FCC Tele 47 CRF Part 15,Class B Integration Time Model 831 General Features and Characteristics Time Ave•aged levels and Sound Ezpowreleveb(4 Class 1 Precisym Integrating Sound Level Meter with real-time 1/1 and 1/3 octave Chen Menem 0.1 second Nun-Volatile Memory Maximum with Daily Autos-tore Enabled Unlimited loge contrast 1/13th VGA LCD display with white LED backlight;sunlight readable Maximum with Daily Autostore Disabled >73 days with error a 0.5 dB (con-driven graphic user interface Dosimeter Metrics:TWA,Doss(s) Soft rubber—backlit keys Minimum 0.1 second large dynamic range Maximum Unlimned • Time weightings Shire.Fitat,Impulse,Integration and Peek simultar caslyIAnyoatal Ln Statistics Frequency weightings'A.C.I simultaneously IAnyDatal Number or selectable parameters 6 in mull,tomat,visible on the Model 931 1/1 and 1/3 octave frequency analysis available Storage of Complete Table 0.1 dB Stops Voice message annrntmmn and sound recording Spectral Statistics Requires Octave Analysis option 1831.0831 Ln statistics(10.01 through L99.9available) -----------Y-- Markers SLM Utility-63 software available for sec-up,control and high speed data downip id with export to Excel Number of Markets 10 Multitasking processes allows measuring whikr viewing data or transferring data Prenamed Matteis 5'Truck,Automobile,Motorcycle.Aircraft,Uchida Data Secure leatuie saves data to permanent rnomtvy every mnute Link Mader to'somatic Sound Recording Yes.requires Sound Recording option)831-Soil AC/DC outputs to recorder Rack Erase Loop battery lib:.:16 rows cominsors measurement ...................._ Back Ease Time 5 m 10 seconds Multiple language support English.German,Italian,Spanish.Portuguese.Swedish,French 9'Turkish ................._._.._..................................__...._......_......._......._._._..................................................................,.............--- ......_ Supuurled Modes Manual Field-upgradable firmware:keeps instrument current with the latest measurement features Measurement Control Males Two-year limited wananty i Sound Level Meter Specifications Available Merles Manual Step.Toned Stop.Slop whensraele,Continuous.SingleBMek I Tamer.Daily Block Timm Averaging llntngratian method' Liman a Exponential ntial Tuned Stop Tame in hh.mmss RMS Time Weighting Slow,Fast or Impulse Strip When Stable Della level in sax dB and time in Mc!lieu Frequerty Weightings A.C o 2 Continuous with Daily Auto-Store1,2.4,6,12.24,48.D6 or 144 files per day,automated file numbering Peak Detector Frequency Weighting A.C or Z 'yymmrktnnlil0' _______ ___ ---------- ._..............."--aticifpowe...__._........"ini:------ ._......__..._---- Gam 0 dB or+20 d8 Comimioie Reston on Power Failure Aurnmatc if powered by 12VOC Exchange Rates 3.4.5.or 6 dB with optional 93t-91 Single Black T:nor Start date and time m End data and time Sample Rate 51.2(0 Hr Daily Block Timer Up to 3 bluets with each start and end date.blocks can cross date line Peak Rise Time 30 us Physical Characteristics <1 sec m74 hours,a175'F1t249:1 Iengtnwvth Microphone andPreamplifier 11.35 in 79.0cm `tOsacin30days.ar-40toa156°FI-4Oto+7p°C) Long".Instrument Body Only 8.8 in 22.4 cm Digital Voice Annotation Width 2.8 in 7.1 cm Annotate Recordings Use headset IA00003J or measurement microphone Depth 1.6 in 4.1 cm Recording Sample Rate 8 hops Weight wah Batteries.No Theenpller or Mcncglore 131 a 390 g I'stpninp OTmmfts On the Model FBI or using pressing sehware ha may Ike Weigh with Batteres,Preamplifer and Microphone 12lb 550 g Excel is a registered trademark of Microsoft Corporation in the United States and/or other countries. III riLarson Davis I Toll-Free in USA 888.258.3222 I Phone:716,926.8243 I www.larsondavis.com `.3%t .:.-...I-. rj itfa fi • ■;. ,t l i !< _Ft, �a.! A ... - .-,- .=. _ . aria,ort ,a‘fis.rom - - - , 7-- .. . . . .. „..,..,...,...,:__._..,.. .. ,ACIDC Output, Power Supp y, t emory etention f % ,1 Broadband Noise Level & Preamplifiers .fillinil r t . m Model 831 Preamplifier Specification(PRM831) is I 4.', u;luancy resparse with respect to the a rose at 1 kHz with 1 Vn s input and 12 p ow ❑e Hltrto16Hz +0.1,-0.2dB +.'_': 16-210100 kHz .0.1.-0.1 dB - lower-3118 limit <1.5 Hz °_' Attenuation 0.1dBitynicall Intr4lmpedance 1060/ -r Output Impedance 50A Maximum Durpur 78Vpp 143 118 peak for mierephones with 50mV/Pasensitivity a • • • .,•..iii l° t r� • Maximum Output Curren: 12mA peek 3riB HarmunrcDistortion <-7003C with 9Vmts output at1ldtz Microphone Output Slew Nate 2 V per'is ltypisall Electronic Noise With 12 of Equive- 1.8 pV typical A-weiented 12.4 IN mail General Specifications(Continued, ler Microphone 4.3pV typical Hat 70Hz tan klle15AUVmaxi AC/DC Output Power S.:pply Voltage 151036V Jack 11.5 mm 131.12 Ill.see Cat 139 cable DC Output Level =1/2 pews supply voltage Power SuVU11 Currant 1.9 mA(typical)(typical)AC Output Voltage Range u 2.3 Veep'. Dolan.0.5 mV:o 1.6 Vmrs sing utpu AC Output Recommended Load Headset with 216 n speaker impedance lemperalure Sensitivity <x0.0.5 118 from a14 to+t 76*E1-40 le+�°CI .D ----- I -r 0----------- Humidity Sensitivity <xfl.115 dB hem 0 to 90%RH,non-condensing at 022°F{+50"Cl DC Output Voltage Scale 10 mV per dH,U V for p dB,1 V for 100 dH Dimensions lD x tl 0 DC Dutpat Frequency&Time Weighting i Fulluws SLM Settings'A.C or 2 and S.F or I .5 o 2.t:In p7,7 x 73 mini ___ Tee-oft Preamplifier Signal Alternative Use AOP015 and IXC006 -�� Microphone Thread 11.7 mm•60 UNS(0.41x-06 In-611 OHS) Power Supply Cable Driving Capability The Model 031 SLM(10 Vrms output signal'to 211 kHz with 200 It(61 ml cable S 4•AA(IRfilN0v*t1.5VLhniumaAaalinetells Test Conditions Aflvalues areal73°F 123°C).50%le II i.35Vsupply.70 (3m)cable Batteries and with 2500 mAlr NiMHI ._ _._ and equivalent microphone of 12 pF unless otherwise stated Outten Connecta, SwechcrahTA5M IS-pin male! USB Mini-8 rahnetndf ro Compatibility Ito IEC61094-41 Use with 1/2 in microphone.typical SO mV/Pa sensitivity •USB imedace hen computer Eternal Power i5 V from USB) •PSA029 AC to DC power adaptor •USE'Hub •PSA031 12 VUC to USE{adaptor External Power Power dnotghVOcrmrtactor:10 to 15.5vDCUer-TibieCHu40, Model 831 with PRM631 and 377B02Microphone CR1154 on Medal 031-INT Interface Unit 0asGam 0040 Cain Onorutin0 Tinto er1.5Vlithium 24 liters with power court options,1 toG Leg lriqpnrig A --- 1B-1404B 17-12045 Power Consumption with PRM831 1.1 W(backlight off.running' namicflan e Dynamic g ._..........__...._—._........._—._ _._ ........__..._._ ..,.__..._____..._....... C 18.140 OR I 17-120 dB Memory Retention Z 23-140 dB 21.1211118 Data Memory Non-volatile flash memory.no.• . A 29-140x18 26.120 dB Real-time Clock 1210 minutes with batteries re—nvedr Measurement Mange Ili C 29-140 dB 77-170 dB Broadband Noise levels 2 1 35-140dB 34.110118 serf-generated rift-tricot Noise A 0115 ce 210109 Weighting D:a8Gain 20 i8 Gain , 24 to140dB 19 to12UdB 2 t 14 dB 2 86 dB Typical WEB Max(118) Typical(dti Max IdB1 Linearity Range 121 C __— —_—_...,._ .__...._._.................. 25 to 140 dB 73 to 120 dB A 13 15 6 i 10 2106 de 28Bd0 C 15 22 12 16 2 32 to 140 dB 32 to 120 d8 Z 27 75 19 26 A 66-143 dB 46.17308 Self-generated total Noise Peak Range C 66.143 dB 46 173118 Weighting n:8 Ga, 70 dB Gain 2 I 77.143dB 59-123 dB iiiMEITyp ea11dO) Max Max Level SPL 1G 111 120 dB 19 17 PEAK t43dB 123dB C 18 23 17 19 ' Z 73 26 21 26 Ill As defied in IE0 61672-1.Microphone and uk:crnical velt-ttuise included.I21 As defined m ANSI 51.4.dettsical Note:Combination o1 the electronic noise and me thermal noise of the 31702 microphone at 69"f f2U'I:1 measlaed Measwements, in a sealed cavity and vibration isolated with an averaging time of GO seconds.Electronic noise of the instruanent with i an ADF090112 pit in place of the microphone highest anticipated sett-generated noise. Permanent Outdoor Preamplifiers and Microphones I Model 421iAl2 Model P9M2103 III -4 ;'s: t: Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis.com 21 Model 831 Options-at-a-glance Fast Fourier Transform 1831-FFTI FIT lines 400,800.1600.3200 or moo Frequency Span 100,200 500 1000.2000.500C.I0300 or 20000 Ht 8 e r.-1 Window Henning,t laeop or Rectangular , RV.s (requcnny Weighting A C Z ..' r Y 1 'Bandwidth,Z Weighting 3 He to 20 kHz . Cursors Manual and Max tracking rent or without Harmonic cursors ;✓ Reverberation Time 1831-RT) '.7 - Methods Impulse Excitation and Interrupted Noise — r'hers 1/1163 Flt to B kl led and 1/3(50 Hz to 10 kl hl Sample Time 2.5.5,10 or 20ms Measurements 120,130 and ISO 3302-2 goals),indicators Spectral analysis with Octave Bands Octave Analysis(Option 003) Frequency Range tit Octave filters B W to 16 kHr „. 1/3 Octave liters 6.3 lb to Metz Octave him self generation noise at I kHz 1/1 Octave Filters 2.0 d01i em rahye10.2 dB m low range w/20 dB gain' BAal Sp Directional Speaker 1/3 Octave Filters .3 I dB isIr law range 14.0 dB in low range wi 20 dtl gain( Octave Analysis Parameters Lim,nnctry 0131-Ili. Filters None,1/1 octave,1/3 octave,or I/1 and 1/3 octaves Dosimeters Two in parallel —^ Frequency Weighting(independent Pre-configured settings OSHA-1.OSHA-2,ACGIH,NIOSH,IEC of broadband} A.C or 7 Maximum Spectrum Maximum in each band nr Spectrum m at broadband Lmax ExchangeDale3.4.5.or 6 dD(independently selectable per dosimeter) Spectral Statistics 6 percentiles per bad threshold (Selectable level • Time History(see Bald-OWCm late t Duration arid Tone !Numeric nyxut Octave Band Logging Capability Measurement History Ise 831-FLA) Event History(see 131-ELA) Communication Normalized Spectrum Analog modem and Serial Communication View Modes SPL.Lreq.Lmax or Linn,absolute or relative Regoures lay quality line lie VOIP-like data compression attowedl Preael:----"_- ---- Analog Modem Salad` and an analog en host computer reael,nee Filters A C.-A•C _........._........ --...__.. _...--....................modem cn h User Defined Filters Fear named for 1/I octave and four for 1/3 octaves hands Analog Medem Protocol ?Aladin Profiling with Time History Logging,Measurement History and Event History Analog Modem Model MUMUSB-A Analog Modem Power Requirement Powered USB Hub or 1131-INT Decking Station Time History'lU"Legging(831 TOG) Analog Modem Crnunl Model 631 USB pen as hoot carroltor Selections from 70 ms to 24 h Record Period Analog Modem Data Rate 2 to 3 k6/s(typical' 3.5,S anti lO ms are amitaMe with option 834451 ----- - 'Arry combination of ova table broadband and sps::�al -— Serial L:ommunitation Prerequisite USB to serial bodge IOVx008AP togging Parameters ArryDara plus non sound metrics Serial Tnmmumheation Protocol Z-Modem Me,h-,uremenr History'Mb"logging 1831 HA Serial CPmmunicatien Control Model 831 MB port as lost controller Internal 1 nun to99le Wireless Modem 1831-00MM)Over Internet Santoas Overall Meaeummem I35%4-5r 7r,Edge tech,,, over tmerreet Dynamic P address support via legging Parameters I Statistics e Spectral In(it OBI or 0B3 enablerli Wireless Modem Support server initiated call Static IP address support when allowed by ISP prodder Sound Record Tagging Al start of each interval(required m enable SRI ............_................ Noes not require modem tin server) Wireless Modem Protocol Modem over 1CP/P Event History"FH"Logging 18,31-ELA) Wireless Modem Model MOMUSB-E(Doad-batdl Logging Period 20 ms to h s(independent o1 TH is MH) Wireless Modem Power Requitement Powered US8 Hub or 831-INT Docking Station Lee,.nwx.Lpsak:lateen]Time Duration.Eapuslre in .1 and'a s,and available - Logging Parameters spectral Lem and maernan Eve t time history o also avaitahlo with b d an oadbard Wireless Modem Control Model 031 USB port as hose controller spectral levels. Wireless Modern Data Rate 2 to kB/s Itypicall Sound Record Tagging RequaedtoenableSRat8or t6ksps USB Communication SEE YesILvl Standard Cedes Up to 16.4ft(5 ml.CaLl38it6ft Ill m) Sound Recording i831-SRr Extended Cable Devices are available that extend the connection up to 330 t 1100m) Dina Format Mono wave file l.wavl.lossless Weather'Meteorological Parameters) listening Upturns On Model 831 using headset with Utility program,DNA or using standard Combined Meteorological Unit ISENB311 wave Ilk ulayet ---- Measurement Method Digitized over soul purl III USB Sample Rate B.16.74 m 48 kept _ Sensor Model SENU31 fiequires CBLlb7.OVXDO8A and 831-WIHRI Sterope Requirement 1 MB/minas 8 ksps to B MB/min at 48 ksps Model 1131-1N1 Docking station.or direct to Model 831(external power Manual.Coupled to Markin.at measurement interval begin.upon Sound Retarding Moods Sourceexceedance event Connectivity �uue:l 081.1711 break-out cable can he used with user phondod anemometers Preugger Op to 9 s --- and analog sensors III (Thrown Max 9999s Measured Parameters Wind speed and direction,temperature,relative humuitr.rain and hail Sound Streaming Summing to hest requines 1150 communication line le31 VI.6 or lam) riLarson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis,com ay''I�if.� i ee zti t _.t t el �. 0 ,05-cilefe 0 Le(Feeesee :'• ''''''''''' —'. ' '-1';':'"e'e.. ''''':fe5,.''' eleft5'.—eite ....4 et 3tir .lteact11K3 4 9t11 !friri. I. C_ :( i Y^�^]-. ,ion-. min-v--.,_.:.�..0 ,L, e c'�.rc,",•, of L�f. �3s4man �i.a .ems.,,U H, v "..,: - r.. Ordering Information hamlet Number Description Model Number Desr.rrptiun Saiirld Lr.scl Meter Sutrsvarr. Model Tel Sound Level Me:wlaEuvbornnmrtal/Community Noise in:ludieg el",__ SWW-SLM- SIMUtility-G3 software tor SardTrackLxPand ode1831 sound level meter download, 831 Mytata and Voice Arrant on,without microphone or preempt if ter Uf1LG3 upgrade.translate.prim text reports or teem to spreadsheet CD with Quick Slat Guide Model 831 Sound Level Metal with Class-I tree-Geld,pre-polar'red pecison condenser SWW-DNA Basic software and dangle(USA)for evaluation and reporting of data downloatled Iron the microphone:(50 mV/pal.preamplifier(PHM6311,accessory kir ItestACCI Larson Davis instruments.requires an instrument driver 831 Model 531 Sound level Meter with Class-1 random-incidence pre•polarired condenserSWW DNA B31 Instrument driver for instr dre,ument ca set-up,hue display.dareuansterei'.and data mrimpunefee mVyPal.preamplifier(PRMB31I.accessory kit 1631-ACC) download to Model 031 Sound Level Meta �„ s S W W-DNA-EV DNA option for events tracking.PM and PM I event time history and EPHI event T. Upgrade Model 831 Sound Level Meter wife logging of time histories with periods SWW-DNA-BA UNA sultware Bluilding Acoustics.allows calculation of uansnnssion loss and strand '''''.'1,11''EIS '821405 from?0rnato24M insulation calculations .ply Upgrade for Model 831 Sound level Meter.I ec iedance based logging analyse SW W-DNA- UNA software for monitoring a remote location when using tl22,624.tl/U.ur 531 Models. 831-E� REMOTE Uses modern connection for communication and data download with avant,Interval and daily histories. 831-0B3 Upgrade Medal 831 Sound Level Meter with Real-time 1/1&1/3 octave fiher set Calibrators Upgrade Model 831 Sound level Meter inns sound recording,Adds sound snapshot Class 1 acnlstic calibrate,wen user selectable omen of 94 or 114 dB et 1 k& 631•SR on demand,with Measurement History(831-EtA required)or en events. 1/2 inch opening(no adaptor) —....-._...trip-trip- .............--._........_......._._....---..._._---'----'--._._._....-"----............_...._._._....-......_........_ 631-FST Upgrade Model 101 Sound Level Meter to legging of time histories with periods Class 1 microphone calibrator,output 114 dB at 2511 Hz.1 inch opening with 1/2 inch from 25 ms to 24 hr(requires 831•LOG&831-083) (AOP019)adaptor.[r5 inch(ADPtCJ01 end 1/4 inch(Angell)adapters available 631-IH Upgrade Model831 Sound level Meter.Industrial Hygiene feature Temporary Noise.VInnitnring System Cnmpnmarts 631-COMM L71 grade Model 831 Stand lave Motor,Advanced Common catitvn Option controls for Model 831 irchudirse(2121Ah bat.charges IPSA032),internal preamplifier cable i the EDGE modem lMOMU50-E1 EP Sg29.831 {cat 141).preamphher cable 1011142-D0a power cable(CBL 1431.3 ft mast 831-RT Upgrade Model 831 Sound Level Meter with Reverberation lane Analysis — Case for Model 031 Sound Level Meter including Ill71Ah battery,charger IPSA032). 831-FIT Upgrade Model 831 Sound Level Meter with EFT Analysis EPS030-$31 internal preamplifier cable(CBL141),and power distribution cable 1CBL151) 031-MSR Upgade Model 831 Sound Level Meter with Measurement History and Sound Recording Environmental eotemiien fer 1.^,.inch preampliferslPWMI XI or PllM8311.with windscreens, EPS2106 2 bird spies.desiccants.3/4 in standad sold-wall endue tlnead WS001 31/2 inch diameter windscreen for 1/2 inch microphone EPS2106-3 Environmentalpreteetian Ion 1/2 inch prosamplerns IPRM21031,with windscreen,Presents, 3/4 in standard solid-wall P/5 conduit thread Accessory kit tor Model B31 Sneed Level Meter,which Preludes case 1831-CCSI 831-ACC battery(4-AA.power supply w/USB cable IPSA0291 and vn xlsrrrrvor1 VShttl 19PS21011 2 Environmental perfection la lel inch peampldrers 1pr1MLXl or PRIVY'I.with 831-CCS Hard shell case for Modal 831 Sound Level Meter • windscreen.bee spikes,desiccates,1;4-n tamale thread to use wen inp[ds —_.._- -_._..- —__._.... trip--._............._____._._....._.._...t--- .___._..............___......._ _ trip Environmental protection for 1/2 inch preamplifier(PRM2103),with wudscreen, AC0003 Headset with microphone boom.0.09 inch{7.5 mm)sub-miniature plug EPS2106-3 ._._...._...._....-- bird spikes.l/4-2U thread LFEMI nor use bathmums.trip _-_.... ADP074 ,ICPecable adaptor for Made MI Sniffle I twat Muter 7µP001 Instrumentation blend w/ADP032 peampidior to tripod interlace CBL138 CableUSRAtoMini-R6h(1.8m) —_....0...—_._._.__ ._trip_ —einrum' —_triptab--yst.....s CBL139 Cable 0.09 inch 125 mml suit-miniature plug AC/DC out to BNC or RCA fRP00;t Support curiae maximum tR to 6 ft 12.4 ni)irsed in portable NMS systems _._._....... _..-�-- —triptrip---- __....____ CCSO32 Soft'smell he Mark)831 and Seurdhed UP' AOP034 Adapror co cabling EPS2106 to I OTS-31ripad PSA027 90 m 7r+4V m 17V seething power supply for 674 end F131 sotnnd level meter and HVM11p CBL174 Wate coot cable con attig EP5029$31/EPSO3383l to euamal PC.Pm LISP A la B ill — -u Permanent Noise Monitoring Systems PSA029 AC Power supply Mr M dr 1831 and SdundTmck LxT•(100-240 VAC to 5 V IiSB w/mini-R cable,CBI 1381 NMS016 Permanent%MS on lift-down pole using main power.Includes 831(LOG,[LA).831-INT. PSA031 12 VDC to USB Converter for Se ndfreck let"and Model 831 _ TRPU18.426Al2-fF EP5031(w/8Ah barteryt and cables. _ __DC power cable for Model Sound hovel Mater.8-30 VOC includes NMSD19 Portable NMS on tepee using solar power.Includes 831(105.ElA).831•INT.TRP020•70. CBL140 — 426Al2-FP,EPS032Iw/solar charger)and cables(required PSA012 and battery). lead-acid battery clamps and 1-v V car plug Microphones and Prra mplili ors Naaeli nor template system inckdtg 83141 with 831-083.031•ELA and y31 ti0G firmware NMS021 options and EP5211Fr2 Also mchdes EPS041 that;vaats of went enrght case IDO Wh battery. PRM831 Modal 831 Sound Level Mee'pmamplilter for 1/2 in free-field or random incidence ernbeddod FY,',HDMI display,wneless keypad.SPVDNA-N1 software,anc wireless gateway. prepolarited microphones _ Noise Monitoring System Components 377802 In arch free-Held.aepobrL2d condenses microphone, photyyical9anamdtye5D mV/PA 631-INT Model 831 decking ataon cored%v defiler scissors.batteries,charger ant dSP peephaab 3.15 itt to 20 kih(1 d8) —�--- Model&el Doering Station with Ethernet IRAN comectigto ponce sLOWy,(matha . 377820 1/2 inch random incidence.prepolaneed condenser microdmrie 50 mV/Pa, 831-INT-ET doge,end USB peripherals 3.15 Hz to 12.5 keeet2 d81 AC0004 Surge suppressor for 110-240 VAC '1/4 inch pressure.pnepolarited condenser microphone typical sensitivity S 1.5 mV/Pa. 377010 d Ht m 70 kHz It2 d81 CBL1T0 Cable Connecting Model 831 m 9 pin D cormeclor(wird speed.direction logic I/O. 3 slow ADC)and coaxial DC connector ItoPSA82A,including breakout cable and I/F block ADP043 1/4 huh 0micruptione lo 1/2 loch tueamplitier adapter Permanent outdoor preamplifier with elotrostauc actuator handily madrng IL OS and suppolutg EPS037 Case en wtmels If.CSO351 with 10)All battery IBAT(712L der permanent NMS.includes cable 426Al2 I vs!mincluded) _ ICBL1491to enclosure 111P5031 or[P50321 externally and pre-poWdtec roc-„1taaxopone not Peenanem Weiner fleamplihertm Mode 1O1 with nerve:Cslibromm Chock.NOM dirty reading MDMUSB-A Modem for Model 831 sound level meter with U58 connection aril dial up PRM2103 and ueate,,cur pie-Ixllaiued miciupa+ixielMlC end cables riot irchdeJl MDMUSB-E EDGE Modem far Model 831 Sound level Meter with U513 connection DVXOOIA US0 Adaptor to DB9 mtedace(used with Seal modem or SEN031) SEN031 Combined weather sensor'wind speed and dinectcn loo moving pats).tempesatme. humidity.pressure.rainfall(requires 08116/cable t UVXIIWA) Calibration CER-831 Calibration and certification n11KiilStM,preamplifier w/u miaeehor ei and 1131-HPI Noise Sources & Accessories CER-MIC Celterati^n and certification for m.crophone CER B31 E Environmental a tlestm n Mrlcd All toi Id0,+153118s10.v1le'el range.Includes caltnatm o'631 and M1Mlrit,83141'1 mviortmmtal test of nuoopeive.Mrrnphprte oedema,rice oiWed. .-'yx� tea:. .. _ CER-PRM2163-E Erim7nrnadalCWftCaion Model PRAT11Ri to l�p.t1581"i ud0,t7U)'Ll range:her ,t':r��.w • , - micrephuiie cemfcatkmL environmental test of microphone CER-426811 Calibration and certification tot 426Al2 including environmental testing for temperature and hum day stability.Replaces windscreen.o-ring,and desiccant cartridges. ( 831-RPT Modal 831 Sound level Meta certification le41 leper.Certificate for SI.M, preamplifier and microphone .. CAL200 BAS001 BAS002 1 kHz.94 and 114 dB.Calibrator Omnidirectional Speaker Lightweight Power Amplifier• '''',',:..',O411.,:s .:.::id..4 Larson Davis I Toll-Free in USA 888.258.3222 I Phone:716.926.8243 I www.larsondavis.com Model 831 Sound Level Meter Solutions . . _ . , . . ......._ '_.,..„_,:_:...:....:-- ,.. • - , .,.., r a__,...„:„.„..,„___.- . I • { ,, _ I. •�i,r1 r ,` `A s Z't o O Building in Ac ust, L nvi on Brit Noise onitori , . • t `4»LARSDN DAMS _ ,m„ A PCB PIEZOTRONICS DIV. x. Larson Davis provides complete solutions for noise and vibration measurement and analysis. From stand-alone, , simple-to-use instruments to complete systems including �% a wn sensors. data acquisition,and software, Larson Davis has �_ "a • what you need. As a division of PCB Piezotronics,Inc.,Larson Davis guarantees Total Customer Satisfaction through our outstanding limited r--. warranty; no-charge, 24 hours toll-free technical support. ., :-R¢ 'r ..--'--. 5 - ;:, global distribution:and worldwide customer service. ` , • ', 4 I °w .;- ; "-- 24350 Indoplex Circle,Farmington Hills,MI 48335 USA A " T Phone 716-926-8243 I Toll-Free in USA 888-258-3222 o-- .unsopremotHeilcopte►Pat _J - Fax 716-926-8215 I Email salesu�alarsondavis.com OW Website www.larsondavis.com S' --�- iso 901 CERTIFIED -- Pre ., FF F Analysis s 5 •..:,..— �n . O2U12d013r'CUCroup.lr.In0ILmlmestotsoro,Wmpatioimprovement npsui niunsaresArcitodungemlhoulnotice.r'CO.andICParereiiStaraltrodenarks:IltPCOCte[m Inc..3o InJtackLXtSpark 108310113 and llkr:r arempleiekltredcsnairs ut MB Pie Mrtmu.he.IN Knave a a oaiaaaktd 1L'8}tiwkr Inc.AN udE:I oalenchrs we pWenirsurlIi,r imbue umos. Y•mterf in rJ S A. Hello