procedures for regular maintenance of gas detectors
For the gas detectors currently available in the market for limited spaces, most are used for gas detection, explosive gases, carbon monoxide, hydrogen sulfide, and other gases, as these hazardous gases are common. However, instrument manufacturers cannot guarantee the applicability of the instruments. So the applicability issue should still be evaluated and determined by the purchase and usage environment. Therefore, when selecting a detector, the following aspects should be considered: applicability, capability and limitations, reliability, stability, protection requirements, identifiability, and convenience to choose a suitable detector for use.
Gas detectors mainly use gas sensors to detect the types of gases present in the environment. Gas sensors are sensors used to detect the composition and content of gases. It is generally believed that the definition of gas sensors is based on the classification of detection targets, which means that any sensor used to detect gas composition and concentration is called a gas sensor, regardless of whether it is using physical or chemical methods. For example, sensors that detect gas flow are not considered gas sensors, but thermal conductivity gas analyzers are important gas sensors, although they sometimes use roughly the same detection method for pathogens that many businesses and households use. Gas detectors are easily available on the market, but they may inevitably encounter some malfunction problems during use. Most of the time, we only encounter some Glitch that we can repair ourselves, but because we don't know some common sense, we can only ask professional personnel to help us repair them. Below, we will introduce the common faults and maintenance of gas detectors.
The possible faults and cause analysis of the gas detector are as follows:
No display when turned on. Membrane switch failure; Battery lead breakage: The battery voltage is severely insufficient.
There is only a negative sign when starting up, and pressing the "Voltage" button does not count. The regulated power supply is faulty or its output side is short circuited.
There is only a Decimal separator point when starting up. The sensing element has a damaged ring; Or a component in the Bridge circuit is soldered off.
No alarm when exceeding the limit. Annunciator damage: the alarm line is disconnected.
The accuracy cannot be adjusted to the standard gas sample. Severe dust accumulation in the explosion-proof cover; Sensor aging.
Repair requirements for gas detectors:
It is prohibited to disassemble this instrument at will, and maintenance work should be carried out by trained professionals.
When a malfunction occurs during use, it is not allowed to disassemble and repair the machine underground.
Sensors and battery packs are special explosion-proof components that must be replaced as a whole after damage. Our factory provides spare parts and cannot replace them with other types of components.
The above are the common faults and maintenance methods of gas detectors. After mastering these maintenance and analysis methods, everyone can try to repair the detector by themselves, without the need for professional personnel or companies to repair it.
