ND9B Sound Level Calibrator employs solid state integrated circuitry that provides accurate and stable performance.
Suitable for field and laboratory use.
Sensitivity calibration of 1" and 1/2" microphones.
Meet the standards GB/T15173, ANSI S1.40 CLASS2, IEC942.
Handy sound source for quick and easy calibration of sound level meters and sound measuring systems.
model number: ND9B
Part Number: ND9B
Details: Applications:
*For quick and easy calibration of sound level meters and sound measuring systems.
*Sound Pressure Level with 94 dB and 114 dB , High Accuracy with 0.5 db , Generates standard levels and frequencies , Low influence of static pressure, Designed for "1" and 1/2"" microphones.
* The ND9B Applies display and key operation, simple to use.
Parameters:
* Model: ND9B
Standards: GB/T15173, ANSI S1.40 CLASS2, IEC942
Sound Pressure Level: 94dB & 114dB
Accuracy: 0.3dB
Frequency: 1000±0.01% Hz allows calibration with A,B,C or D weighting networks or linear
Calibration Of Microphones: 1", 1/2"
Temperature Coefficient: 0 to 0.01 dB/°C
Altitude Effects: Approximately 0.1dB decrease for each 2000 feet increase in altitude from sea level to 12,000 feet elevation, or comparable atmospheric pressure change (approximately every 50mm of Hg decrease).
Temperature Range : -10 to +50°C(operating), -40 to +65°C(storage with batteries removed).
Power Supply: 4x1.5V AAA (UM-4).(Battery not included in the package）
Dimensions: 137x51x51mm
Weight:200g
Package includes:
Standard Accessories:
1* Main Unit
1* Carrying Case
1* Operation Manual
