The first step of installing the gas leak detector is to 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 gas to be measured relative to the air. Less than air, the detector should be installed 30 to 60cm from the ceiling. Secure the detector to the wall with a Φ8 expansion screw.
However, in order to ensure the correct use of the detector to prevent its failure, the following is the phenomenon of attention (not easy to install):
1. Places where the temperature is below -40°C or above 70°C. 2. Places where air flow is large, such as air supply ports, ventilation fans, and doors. 3. Where water vapor and water droplets are abundant (relative humidity: more than 90%)
4. The second step in the place directly affected by steam and fumes is the wiring: the wiring should use a highly shielded wire to prevent the electrical signal from being disturbed. Place the wire well and open the top cover.
1. Gas detectors for gas leak detectors generally use three-wire transmission. The positive pole of the power supply is marked with ("VCC" terminal), the signal line (terminal labeled "SIG"), and the negative power supply (marked with "GND". Terminals) respectively correspond to “24V, mA and GND†of a group of terminals marked “4-20mAIN†of the access channel module, and the chassis ground (shielding network of cables) is well grounded. After the cables are connected, the chassis is fastened.
2. Start: Wiring is completed and the detector is powered. The reading will be stable from the over-range reading to just about 15 minutes after the start.
In addition to correct installation, you should also understand simple maintenance.
1. Sensor maintenance: Generally, it is necessary to re-inspect the calibration during installation and use for six months to one year, and a test report shall be issued by the testing party.
2. When the sensor of the gas detector loses sensitivity, it needs to be replaced. The metal tube float flowmeter, turbine flowmeter, and vortex flowmeter will know whether the sensor is ineffective through periodic calibration. When the calibration value fails to reach the standard gas value, Replace the sensor.
3, gas leak detector machine inspection: Usually should periodically check the detector, which in the clean air signal current DC4mA.
The above is the simple installation and maintenance knowledge of the gas leak detector.
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