Common troubleshooting of gas detectors
When using the gas detector, the user of the gas alarm should install the air conditioner and heating equipment close to the flammable gas detector. When using the air conditioner and heating equipment, if the cold and warm air flow directly blows through the gas detector, there will be It may cause errors in the resistivity of the platinum wire of the body alarm. Therefore, the body alarm should be kept away from air conditioners and heating equipment to avoid malfunctions caused by improper setting. Users should also pay attention to anti-electromagnetic interference when using the flammable gas detector. The installation position, installation angle, protective measures and system wiring of the body alarm should prevent electromagnetic interference. When using the flammable gas detector, users should pay attention to factors that may cause failures, such as: dust, high temperature, humidity, rain, etc. When an exhaust fan is required to be installed in the place where the flammable gas alarm is installed, if the exhaust fan is installed adjacent to the flammable gas detector, the leaked gas will not be able to fully diffuse to the vicinity of the gas alarm, resulting in failure to detect in time. Yi missed the opportunity. Users should also pay attention to avoid places where high temperature, high humidity, steam, and oily smoke can reach when using the flammable gas detector. Do not place or hang objects on the detector. The installed flammable gas detector cannot move the position of the device arbitrarily. Users should try their best to choose products with replaceable sensor probes when using body alarms for ease of use.
Second, the construction process is not standardized;
Irregular construction process will cause flammable gas detector to detect failure during use. If the flammable gas detector is not installed near the flammable gas detector, or it is installed adjacent to the exhaust fan during installation, the leaked flammable gas cannot be fully diffused to the vicinity of the flammable gas detector, so that the dangerous leakage cannot be eliminated in time. Gas detector detection. If the flammable gas detector is not reliably grounded and electromagnetic interference cannot be eliminated, the voltage will be affected and the detection data will be inaccurate. Therefore, the flammable gas detector should be reliably grounded during construction. The flammable gas alarm and connection terminals are located in places that are prone to collision or water ingress, causing electrical circuit breaks or short circuits. Non-corrosive flux must be used for welding, otherwise the corrosion at the joint will separate or increase the line resistance, which will affect the normal detection. Do not drop or drop the detector on the ground. Debugging should be carried out after construction to ensure that the body alarm is in normal working condition.
Third, maintain the gas detector
To detect the gas concentration, the detector must communicate with the detection environment, so it is unavoidable for various polluting gases and dust in the environment to enter the detector, and the damage to the working conditions of the detector is an objective existence, flammable The working environment of the gas detector is relatively harsh, and many of them are installed outdoors. Poor maintenance will lead to errors or non-detection of the physical alarm. Therefore, regular cleaning and maintenance of combustible gas detectors is an important task to prevent failures.
The grounding should be tested regularly. If the grounding does not meet the standard requirements, or is not grounded at all, it will also make the flammable gas detector susceptible to electromagnetic interference and cause malfunctions.
It is recommended to test the response of the standard gas used for the instrument before using the various instruments to ensure that the instrument really plays a protective role. Combustible gas alarms and toxic gas alarms, like other analytical and testing instruments, are measured by relative comparison method: first, a zero gas and a gas with a standard concentration are used to calibrate the instrument, and the standard curve is obtained and stored in In the instrument, when measuring, the instrument compares the electrical signal generated by the gas concentration to be measured with the electrical signal of the standard concentration, and calculates the accurate gas concentration value. Therefore, zeroing the instrument at any time and frequently calibrating the instrument are the only tasks to ensure accurate measurement of the instrument.
