ND9A ND9B Sound Level Calibrator


Product Description

Sound Level Calibrator
ND9A: 
Accuracy: 0.5dB 
ND9B: Accuracy: 0.3dB 

Features
* Handy sound source for quick and easy calibration of sound  level meters and sound measuring systems.
* The Calibrator employs solid state integrated circuitry that provides accurate and stable performance. 
* Sensitivity calibration of microphones. 
* Suitable for field and laboratory use. 

Specifications:
1. Standards: GB/T15173, ANSI S1.40 CLASS2, IEC942
2. Sound Pressure Level: 94dB; 114dB
3. Accuracy: 0.5dB (ND9A); 0.3dB (ND9B)
4. Frequency: 1000Hz
5. Cailbration Of Microphones: 1’’,1/2’’
6. Power Supply: 1x9V 6F22 Battery
7. Dimensions: 142x47x47mm
8. Weight: 275g (Including Battery)