Manufacturers' Specifications

Norsonic 102

Standards
IEC 651 Type 2
IEC 804 Type 2

Frequency Weightings A and C

Measurement Ranges
A-weighted : 30 dB to 130 dB
C-weighted : 33 dB to 130 dB

Measurement Modes
Lp : instantaneous level / max. level
Leq  - measurement times : 10 s : 1 min : 5 min : 10 min : 1 h : 8 h and 24 hours
LAE - measurement times : 10 s : 1 min : 5 min : 10 min : 1 h : 8 h and 24 hours
Pause Function : for integral calculation

Microphone
Type : 1/2" pre polarized, condenser
Sensitivity : -33 dB re 1 V/Pa

Rectifier
Type : True RMS
Accuracy : ± 0.2 dB at Crest Factor 2

Display
Type : Four Digit LCD
Resolution : 0.1 dB

Indication Range
Display : 40 dB
Ranges : 30 to 70,  50 to 90,  70 to 110,  90 to 130 dB

Warning Indicators
Over indicator : lights when input is 8 dB over the range
Under indicator : lights when input is 1 dB under the range
Battery indicator : lights at a battery voltage of 1.9 V

Time Constants
F : Fast
S : Slow

Calibration
Electrical calibration by means of a built-in 1000 Hz sine wave oscillator

Outputs
AC : 1 Vrms at full scale, load impedance = 10 kohms
DC Log : 2 V at full scale, 0.5 V / 10 dB, load impedance = 10 kohms.

General
Batteries : 2 x IEC R6 alkaline
Battery Life : 10 hours, approximately
Temperature : -10 to +50 °C, 14 to 122 °F), provided no condensation occurs.
Humidity : 10 to 90% RH
Size : Height = 21.5,  Width = 7.4 and  Depth = 3.2 cm
Weight : 0.3 kg with batteries.

Gracey and Associates   01933 624212

BSI approved for the hire of noise and vibration instruments

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