Common faults and solutions of combustible gas detector
1. The construction process is not standardized
If the combustible gas detector is not located near the equipment which is easy to leak, or it is installed adjacent to the exhaust fan, the leaked combustible gas detector cannot fully diffuse to the vicinity of the combustible gas detector, so that the leakage danger cannot be detected by the combustible gas detector in time. If the combustible gas detector is not reliably grounded, it will not eliminate electromagnetic interference, which will definitely affect the voltage and lead to the failure of inaccurate detection data. Therefore, the combustible gas detector should be reliably grounded during construction. Combustible gas alarm and terminal are set in places where it is easy to be collided or flooded, resulting in open circuit or short circuit of electrical circuit. Welding must use non-corrosive flux, otherwise the corrosion at the joint will release or increase the line resistance, which will affect the normal detection. Do not drop or throw the detector to the ground. After the construction, debugging should be carried out to ensure that the body alarm is in normal working condition.
2. Improper use by users
When the user uses the gas detector, install the air conditioner and heating equipment near the combustible gas detector. If the cold and warm air flow directly blows through the alarm during the use of the air conditioner and heating equipment, it may cause the resistivity of the platinum wire of the alarm to change and make errors. Therefore, the alarm should be far away from the air conditioner and heating equipment to avoid failure caused by improper setting. Users should also pay attention to prevent electromagnetic interference when using combustible gas detector. The installation position, installation angle, protective measures and system wiring of the body alarm should be protected against electromagnetic interference. Users should pay attention to the factors that are easy to cause failures when using the combustible gas detector, such as dust, high temperature, humidity, rain and so on.
When it is necessary to install an exhaust fan in the field where the combustible gas alarm is installed, if the exhaust fan is set adjacent to the combustible gas detector, the leaked combustible material will not fully spread to the vicinity of the combustible gas alarm, resulting in the failure to detect it in time and the loss of fighter aircraft. Users should also pay attention to avoid places where high temperature, high humidity, steam and lampblack can reach when using combustible gas detector. Do not place or hang objects on the detector. The installed combustible gas detector cannot move the position of the device at will. When using the alarm, users should try to use products with replaceable sensor probes for convenience.
3. Maintenance of the body detector to detect the body concentration.
The working environment of combustible gas detectors is relatively bad, and many of them are installed outdoors. Poor maintenance will lead to errors or non-detection of portable alarms. Therefore, regular cleaning and maintenance of combustible gas detector is an important work to prevent failure.
Grounding should be tested regularly. If the grounding fails to meet the standard requirements or is not grounded at all, the combustible gas detector will be vulnerable to electromagnetic interference and cause failure.
It is suggested that before all kinds of instruments are used, the standard gas used for instruments should be tested in response to ensure that the instruments really play a protective role. Combustible gas alarm and toxic gas alarm, like other analysis and detection instruments, are measured by relative comparison method: firstly, the instrument is calibrated with a zero gas and a gas with a standard concentration, and the standard curve is stored in the instrument. When measuring, the instrument compares the electrical signal generated by the gas concentration to be measured with the electrical signal with the standard concentration, and calculates the accurate gas concentration value. Therefore, it is necessary to zero the instrument at any time and calibrate the instrument frequently to ensure the accurate measurement of the instrument.
The gas detector can continuously and quickly detect the gas concentration in the surrounding environment or confined space. The instrument has the advantages of fast response, high measurement accuracy, good stability and repeatability, and the performance of the whole machine ranks at the leading level in China. The instrument shell is made of high-strength engineering plastic, and its shape design and dazzling color collocation redefine the detection method of gas concentration; In addition, the friendly operation interface and recovery function of misoperation bring users a new experience of intelligent gas detector.
