What are the most important safety precautions when using gas detectors?
Firstly, in order to detect gas concentration, it is necessary to communicate between the detector and the detection environment. Therefore, it is inevitable that various polluting gases and dust in the environment enter the detector, and the damage caused to the working conditions of the detector is objective. The working environment of combustible gas detectors is relatively harsh, and many are installed outdoors. Poor maintenance and upkeep will lead to errors or non detection of the movable alarm. Therefore, regular cleaning and maintenance of combustible gas detectors is an important task to prevent malfunctions.
Grounding should be regularly tested. Failure to meet standard requirements or not being grounded at all can also make combustible gas detectors susceptible to electromagnetic interference and cause malfunctions.
Secondly, during the use of gas detectors by gas alarm users, it is possible to cause errors in the resistivity of the platinum wire of the movable alarm. Users should also pay attention to preventing electromagnetic interference during the use of combustible gas detectors. The installation position, installation angle, protective measures, and system wiring of the movable alarm should be protected from electromagnetic interference. Users should pay attention to factors that can cause malfunctions during the use of combustible gas detectors, such as dust, high temperature, humidity, etc. When exhaust fans are required to be installed in places where combustible gas alarms are installed, combustible gas detectors will be installed adjacent to each other, and the leaked combustible gas will not be able to fully spread to the vicinity of the combustible gas alarm, resulting in failure to detect in a timely manner and delaying the aircraft. Users should also pay attention to avoiding areas where high temperatures, humidity, steam, and oil fumes can reach when using combustible gas detectors. Do not place or hang items on the detector. The installed combustible gas detector cannot move the device's position arbitrarily. Users should try to choose products with replaceable sensor probes when using portable alarms for ease of use.
Thirdly, non-standard construction processes can cause combustible gas detectors to detect faults during use. If the combustible gas detector is not located near the equipment that is prone to leakage, or is installed adjacent to the exhaust fan, the leaked substance cannot fully spread to the vicinity of the combustible gas detector, thus preventing the leakage danger from being detected by the combustible gas detector in a timely manner. If the combustible gas detector is not reliably grounded and cannot eliminate electromagnetic interference, it will inevitably affect the voltage and cause inaccurate detection data. Therefore, the combustible gas detector should be reliably grounded during the construction process. The combustible gas alarm and wiring terminals are located in areas prone to collision or water ingress, causing open or short circuits in electrical circuits. Welding must use non corrosive flux, otherwise the corrosion at the joint will detach or increase the line resistance, which will affect normal detection. Do not drop or throw the detector onto the ground. After construction, debugging should be carried out to ensure that the movable alarm is in normal working condition.
It is recommended to conduct response testing on the standard gas used in various instruments before use to ensure that the instruments truly play a protective role. The combustible gas alarm and toxic gas alarm, like other analytical and detection instruments, are measured using a relative comparison method: first, the instrument is calibrated with a zero gas and a standard concentration of gas, and the standard curve is stored in the instrument. During the measurement, the instrument compares the electrical signal generated by the gas concentration to the electrical signal of the standard concentration, and calculates the accurate gas concentration value. Therefore, zero calibration of the instrument at any time and frequent calibration of the instrument are essential tasks to ensure accurate measurement.
