Vehicle Noise Measurement











CR:261S Sound Level Meter Specifications

The specifications for the CR:261S Sound Level Meter are detailed below. For more information please refer to the product datasheet or contact Cirrus Research plc.

Applicable Standards
IEC 61672-1:2002 Class 1 X
DIN EN 61672-1:2002-08 & DIN EN 61672-2:2003-08

Class+ Pre-polarized Free-field 1/2″ Condenser

Microphone Preamplifier
MV:200C Fixed Preamplifier

PTB-1.72-4025043 to DIN EN 61672-1:2002-08 & DIN EN 61672-2:2003-08

Measurements/ Features
Sound level LAF
Maximum Sound Level LAFmax
Measurement program for automatic measurement and display of 3 maxima (LAFmax)
Remote control unit (5m) with one-touch operation

Time Weighting
F (Fast) to IEC 61672-1:2002

Frequency Weighting
dB(A) to IEC 61672-1:2002

Measurement Range
60 to 130dB(A)

LAF digital and quasi-analogue, LAFMax, battery level, overload, measurement range

External Connections
Remote Control Connection for ZL:261S
RS232 Connection for instrument configuration & testing

Dimensions 340mm x 75mm x 25mm
Weight 450 gms
Power 2 x 1.5v Alkaline LR6/AA
Battery Life Typically >24 hours

Temperature Operating -10°C to +50°C
Storage -20°C to +60°C
Humidity Up to 95% RH Non Condensing

Electromagnetic Performance
EN 55022:1998
EN 61000-4-2:1995
EN 61000-4-8:1994
EN 61000-4-3:2002

Standard Accessories
The CK:261S Vehicle Noise Measurement is supplied with the following components:
CR:261S Vehicle Noise Sound Level Meter
CR:515 Acoustic Calibrator
UA:237 Windshield
CK:260 Carrying Case
ZL:261S Remote Control (5m)
User Manual & Certificates of Calibration
Tape Measure & Positioning Template

Optional Accessories
The following optional accessories are available for the CK:261S Vehicle Noise Measurement Kit:
CR:511F Class 1L Acoustic Calibrator
CR:590 Barometer for use with CR:511F

The CR:261S is available with the display and operating manuals in English & German. Other languages may be available. Please contact Cirrus Research plc or your local distributor for details.


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