JH6022 SOUND LEVEL adjust tester
The instrument is used for adjusting sound pressure of all kinds of acoustics tester.
Main technic parameter:
1.Sound pressure level:94dB(base on 2×10-5 Pa)
2.Precision of sound pressure level:±0.3dB(20℃±5℃)
                    ±0.5dB(0℃~+40℃)
3.Frequency: 1000Hz±1%
4.Harmonic distortion: 2%
5.battery:9V(6F22)
6.range of temperature:0℃~+40℃
7.Relative humidity:80%(40℃)
8.measurement:Ф42×108mm