Sound Level Meter, Noise Meter Common Failures
1、Sound level meter display no display
(1)The internal battery connecting line is disconnected or the battery contact is not good: weld the connecting line and replace the battery contact piece. (2) Battery damage: replace the battery.
2, the measurement reading is obviously low or calibrated when the school is not 94.0dB.
(1) microphone sensitivity is too low or damaged: replace the microphone and recalibrate.
(2) Preamplifier contact with the microphone contact is not good: cleaning contact.
(3) The plug of preamplifier is not in good contact with the socket of the host: replace the plug and socket.
3、Low sound level measurement when the reading is high , preamplifier ground contact **: tighten the outer sleeve.
Noise meter display no display
(1) Internal battery disconnected or battery contact is not good: weld the line, replace the battery contact piece. (2) Battery damage: replace the battery.
2, the measurement reading is obviously low or calibrated when the school is not 94.0dB.
(1) microphone sensitivity is too low or damaged: replace the microphone and recalibrate.
(2) Preamplifier contact with the microphone contact is not good: cleaning contact.
(3) The plug of preamplifier is not in good contact with the socket of the host: replace the plug and socket.
3、Low sound level measurement when the reading is high , preamplifier ground contact **: tighten the outer sleeve.
