Three-point faults that often occur in noise meters
We all know that vibration will produce noise, such as: rotating machinery, impact, resonance, friction, etc., as well as noise generated by flow field, environmental noise, noise generated by combustion, and other noises. The generation of noise has an impact on our life and work. If you want to know the size of the noise, you need a noise measuring instrument.
1. There is no display on the display
(1) The internal battery connection is disconnected or the battery contact is not good: solder the connection and replace the battery contact piece.
(2) The battery is damaged: replace the battery.
2. The measurement reading is obviously low or the calibration is less than 94.0dB.
(1) Microphone sensitivity is too low or damaged: replace the microphone and recalibrate.
(2) The contacts of the preamplifier are not in good contact with the microphone: clean the contacts.
(3) The plug of the preamplifier is not in good contact with the host socket: replace the plug socket.
3. The reading is too high during low sound level measurement, and the ground wire of the preamplifier is not in good contact: tighten the outer sleeve.
