Manufacturers' Specifications

Norsonic 114

Standards : IEC 651 and IEC 804 class 1 for SLM mode.

Measurement Ranges :
A weighted : 25 to 130 dB
C weighted : 32 to 130 dB
Flat : 35 to 130dB

Dynamic Range : 67 dB

Indicator Range :
60 dB, adjustable in 10 dB steps

Frequency :
Range : 20 Hz to 12. 5 kHz
Weightings : A : C and Flat

Detector :
Type : True RMS
Accuracy :   ±0.1 dB

Dynamic Characteristics :
Time Constants : Fast : Slow and 10 ms

Display : 128 x 128 dots LCD (55 x 55 mm)

Measurement Modes :
Lp : measures SPL
Lmax : measures Max. hold level
Leq : measures the equivalent continuous sound pressure level
Ln : measures L5 : L10 : L50 : L90 and L95
Lae : measures Sound Exposure level

Measurement Times :
1 to 59 seconds
1 to 99 minutes
1 to 24 hours or manual control

Measurement Control :
Start / Stop and Pause / Continue buttons

Trigger : Start / Stop button
External or on a specified level below full scale

Memory :   Stores up to 1,500 spectra

Auto Store :   - Transient or Multi-spectrum Mode
Sampling Rate : from 2 ms to 10 sec - SPL measurements
Period Length : 1 sec to 24 h - Leq : Lmax and SEL in
    1 to 59 second steps, or
    1 to 59 minute steps or
    1 to 24 hour steps

Warning Indicators :
Over : appears 7 dB above full scale
Under : appears below full scale
Low : appears with battery less than 9 V
Empty : appears with battery less than 8 V

Preamplifier : 1/2" preamplifier type Nor-1201

Microphone : Nor-1221 or similar
Type : 1/2" pre-polarized condenser microphone
Sensitivity : -28 dB re 1 V/Pa

Calibration :
External : 1251 acoustic calibrator or similar
Internal : built-in 1 kHz sine wave

Outputs :
AC : 3.16 Vrms at full scale
DC : 3 V at full scale with 50 mV/dB graduations

Interfaces :
RS-232C : for transfer of results to host computer
Baud Rate : 1200 to 9600 baud

General :
Batteries : 8 x AA (LR6) batteries or via DC power input socket
Battery Life : approximately 4 hours
Temperature : 0 to 40 degree C
Humidity : 90 %RH
Weight : 850 g with batteries
Dimensions : 20 x 12 x 4 cm (h x w x d)

Gracey and Associates   01933 624212

BSI approved for the hire of noise and vibration instruments

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