Class 1 Sound Level Meter CR:171B

sound level meter for acoustic measurements of the environment and work area / class 1 / approved PTB, LNE Applus+ / sound level function / Leq-Peak function / TWA-Dose function / data logging / pause and back, delete / with AuditStore / with Acoustic Fingerprint audio recording / with voice note recording / Ln/Timer / software support / 3G modem support, GPRS and GPS

With the Optimus Green CR:171B class 1 sound level meter, you can measure environmental noise to control the impact of noise over short and long periods, such as in neighborhoods. This sound level meter can also be used for monitoring in a work area to assess noise levels in occupational and industrial hygiene.

This precision integrative sound level meter meets all regulations (class 1 EN/IEC 61672, ANSI S1.4-1983, ANSI S1.43-1997 EN/IEC61260, etc.) and complies with current regulations on LEGAL METROLOGY ITC 2845 / 2007.

Simultaneous real-time weightings: Slow, Fast and Impulsive Simultaneous RMS frequency weightings: A, C and Linear (Z) Total single measurement range: 20 to 140 dBA RMS (143.0 dBC Peak).

Features principales

- Easy handling to quickly and simply use the functions you need 

- Simultaneous measurement and data logging of all available parameters 

- Simultaneous frequency weightings A, C, and Z 

- Simultaneous time weightings F (fast), S (slow), and I (impulsive) 

- 1/1 and 1/3 octave band filters in real time 

- NR and NC values and curves on screen. 

- Tonal noise analysis 

- Up to 28 statistical Ln% values 

- Unique measurement range of 120 dB 

- Audio activation, recording, and alerts with Acoustic Fingerprint™ during measurement for

  for subsequent reproduction and analysis 

- VoiceTagTM voice note recording 

- AuditStore™ measurement verification 

- Repeated measurements with manual or automatic control 

- Pause and Back-Delete functions 

- High-resolution color OLED display and backlit keyboard for nighttime measurements 

- 4GB memory in which more than 10,000 measurements can be stored (expandable up to

  32GB) 

- Compatible with outdoor noise measurement kits CK:670 and CK:680 

- Measures up to 170dB with the optional microphone system MV:200EH

Technical specifications

Measurement function CR:171B

L_XY, L_XYMax, L_XYMin

L_Xeq, L_CPeak, L_ZPeak, L_APeak, L_Ceq – L_Aeq, L_XE, L_Aleq

L graph_Aeq, L_CPeak cortos

Measurement duration time

Integrators 2 and 3: TWA, Dose %, 

Est Dose %

Real-time 1:1 octave band (graphical and numerical)

14 statistical Ln% values

Funciones guardadas

L_XYMax and history of L_XYMax

L_Aeq, L_Ceq, L_Zeq, L_CPeak, L_ZPeak, L_APeak, L_Aleq

History of L_Aeq, L_Ceq, L_Zeq, L_CPeak, L_ZPeak, L_APeak, L_Aleq

Integrators 2 and 3: L_AVG, TWA. %Dosis

History of L_AVG

1/1 octave band: total Leq and Leq history for each band, NR and NC values and curves

Ln values: 14 independent statistical values

Audio recording during measurement

Measurement duration time

Start time and date of measurement

Microphone

Instrument MK:224 class 1 pre-polarized

Microphone preamplifier

Removable preamplifier MV:200

Total measurement index

Unique range of 20 dB to 140 dB RMS

Background noise: <18 dB(A) Class 1

Frequency weighting

RMS/Peak: A, C, and Z measured simultaneously

Octave bands 1/1: 31.5Hz to 16kHz

Octave bands 1/3: 6.3Hz to 20kHz, (bands from 12.5Hz are displayed, and those from 6.3Hz, 8Hz, and 10Hz are saved and downloaded)

Additional metric: LAeq LF (20Hz to 200Hz) and Leq LF (20Hz to 200Hz)

Time weightings

Fast, Slow and Impulsive measures simultaneously

Pantalla

High-resolution OLED display

Ambient light sensor and illuminated keyboard

Memoria

4GB, factory adjustment option of 32GB

AuditStore

Verification of recorded measurement data in security memory

Data range from history (Global settings)

10 ms, 62.5 ms, 125 ms, 250 ms, ½ sec, 1 sec, 2 sec (user selectable)

Audio recording Acoustic Fingerprint

Off, Manual, Activation by threshold, Advanced activation

User options:

Calidad estudio - 96kHz/32bit formato WAV

Standard quality - 16kHz/16bit WAV format

Pre-activation function

Integradores

Three simultaneous "virtual" sound level meters. Integrator 1 is preset to Q3 for Leq functions. Integrators 2 and 3 can be configured with the following values:

Change index: 3, 4 or 5 dB

Threshold: 70dB to 120dB (1 dB steps)

Temporal weighting: none or Slow

Criterion level: 70dB to 120dB (steps of 1 dB)

Criterion time: 1 to 12 hours in 1-hour steps

Quick settings integrator

EU, OSHA HC and OSHA NC, OSHA HC and ACGIH MSHA HC and MSHA EC, Customize 1 and Customize 2

Statistical values Ln

14 independent statistical Ln values calculated from 1/16th LAF

7 pre-set to L1.0; L5.0; L10.0; L50.0; L90.0; L95.0 and L99.0

7 Ln values at the user's choice

Measurement control

Measurement control with user-selectable duration of manual, 1 min, 5 min, 10 min, 15 min, 30 mins, 1 hour, Lden

Automatic synchronization and repetition 

Pausa

Back Clear with user-selectable duration

Applicable standards

IEC 61672-1:2002 Class 1 or Class 2 Group X

IEC 60651:2001 Tipo 1 |o Tipo 2| 

IEC 60804:2000 Type 1 or Type 2 

IEC 61252:1993 Personal noise exposure meters 

ANSI S1.4-1983 (R2006), ANSI S1.43 – 1997 (R2007) 

ANSI S1.25:1991 

1/1 octave band filters IEC 61260 and ANSI S1.11-2004

Power supply

4 pilas alcalinas tipo AA

Battery life

Normally 12 hours with AA alkaline batteries

Normally 20 hours with non-rechargeable AA lithium batteries 

The battery life depends on the type and the quality and brightness of the display

Conexiones

USB type B to PC, Multi-pin IO for external power and RS232

Tripod

Whitworth ¼’’ socket wrenches

Condiciones ambientales:

Temperatura

Operating from -10 to +50

Storage from -20 to +60ºC

Humedad

Up to 95% non-condensing RH.

Electromagnetic performance

IEC 61672-1:2002 e IEC 61672-2:2003

Except when modified by 

EN 61000-6-1:2007 and EN 61000-6-1:2007

Language options

Download NoiseTools, series software for configuration and analysis. Compatible with Microsoft Windows XP, Vista, 7, and 8 (32bit and 64bit)

Soporte software

English, French, German, and Spanish standard

Other language options also available

Dimensions

283 mm x 65 mm x 30 mm

Peso

300 g

Contents of the shipment

1 x Sound level meter CR:171B

1 x Protector anti-viento 

1 x USB data/power cable

1 x Calibration certificate

1 x CD Software NoiseTools

1 x User Manual