Applications:
For quick and easy calibration of sound level meters and sound measuring systems.Specifications:Model:ND9A
Standards:GB/T15173, IEC942
Sound Pressure:94 dB and 114 dBAccuracy:0.5 dB
Frequency:10000.01% Hz allows calibration with A,B,C or D weighting networks or linear.
Applications:Calibration of 1" and 1/2" microphones
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:-40 to +65C(storage with batteries removed); -10 to +50C(operating)
Power Supply:1x9V 6F22 Battery
Dimensions:142x47x47mm
Weight:275g
Standard Accessories:
Main Unit
Carrying Case(B07)
Operation Manual