How to install and repair the gas detector:
1. Install the gas detector in the area where there may be gas leakage. The installation of the gas detector must be firm, and the installation position is determined according to the specific gravity of the measured gas relative to the air. Because the specific gravity of the measured gas is less than air,
The detector should be installed 30 ~ 60cm from the ceiling. Fix the detector to the wall with expansion screws.
However, in order to ensure the correct use of the detector to prevent its failure, the following are precautions (places that are not easy to install):
1. Where the temperature is below -40 ° C or above 70 ° C, the temperature is too high.
2.Air inlet, ventilation fan, room door and other places with large air flow
3. Water vapor. Where there are many water drops (relative humidity: greater than 90%)
4. Places directly affected by steam and oil fume
2. Wiring: The wiring should use highly shielded wires to prevent electrical signals from being disturbed. Place the wires well and open the top cover.
有“SIG”的端子).电源负极(标有“GND”的端子)分别对应接入通道模块标“4-20mAIN”的一组端子的 “24V.mA和GND”，机壳地(电缆的屏蔽网)良好接地，接好线后，紧固好机壳。 1. The gas detector of the gas detector generally adopts three-wire transmission. The positive pole of the power supply is marked (the terminal of "VCC"). The signal line ( the terminal marked with "SIG"). The negative pole of the power supply (the terminal marked with "GND" ) Correspond to the "24-20mAIN" group of terminals labeled "4-20mAIN" of the access channel module . The chassis ground (shielding network of the cable) is well grounded. After connecting the wires, fasten the chassis.
刚启动后读数将从超量程到读数稳定，大约要15分钟左右。 2. Start-up: After the wiring is completed, power the detector; immediately after the start-up, the reading will be stable from the overrange to about 15 minutes.
Tohnichi Sennen gas detector manufacturers remind you that in addition to the correct installation, you should also understand simple maintenance.
1. Sensor maintenance: Generally, re-inspection and calibration should be performed within six months to one year after installation and a test report will be issued by the testing party.
定期标定就会知道传感器是否失效，当标定值达不到标气值，要更换传感器。 2. When the sensor of the gas detector loses its sensitivity, it needs to be replaced. The metal tube float flowmeter, turbine flowmeter and vortex flowmeter will know whether the sensor has failed through regular calibration. When the calibration value does not reach the standard gas value, Replace the sensor.
3. The overall inspection of the gas detector: The detector should be regularly checked in normal times, and its signal current in clean air is 4mA DC.