Combustible gas detector maintenance and environmental requirements
Although combustible gas detectors are generally suitable for various harsh environments, it does not mean that there are no requirements for the working environment. What are the requirements for the working environment of combustible gas detectors? What maintenance is required?
1. Since the working environment of combustible gas detectors is generally harsh, polluting gases and dust may enter the inside of the instrument. Therefore, combustible gas detectors need to be cleaned and maintained regularly to improve the accuracy and sensitivity of the instrument.
2. In order to ensure that the gas detector is free from electromagnetic interference, it is best to test the grounding of the instrument to avoid situations where the instrument is not grounded or the grounding is substandard.
3. Ensure the reliability of the instrument and prevent failures caused by aging of instrument components. Systems that have expired must be replaced in a timely manner.
4. Different gas detectors should be used in different application places. Semiconductor flammable gas detectors should be used in places where coal gas, natural gas, and liquefied gas are used, while catalytic flammable gas detectors are best used in industrial places that emit flammable gases and combustible steam.
How to use combustible gas detector correctly
Everyone should have a question. After buying a combustible gas detector, how can I judge whether it will work well? In fact, this method is very simple. Generally, experimental gases are stored in workshops. We only need to put part of the gas or liquid in a mineral water bottle, screw on the lid, insert a small hole in the lid with a pointed object, and aim the small hole at the flammable gas. At the probe part of the detector, you can see whether the reading on the gas detector panel changes.
Pay special attention to the fact that some flammable gases are in a liquid state and evaporate relatively slowly. Therefore, during the test, the mineral water bottle needs to be shaken to accelerate its evaporation. Another point: fixed gas detectors generally diffuse naturally, and the equipment will only react when the leaked gas diffuses before the alarm equipment.
If you find this method troublesome, you can use a lighter to test whether the gas detector can read. Method: Light the lighter and blow out the fire, but do not let go of your hand. Keep the lighter still deflating and aim it at the gas detector probe, but not for too long, because the concentration of combustible gas in lighters is very high and the time is too long. , it is easy to cause the gas concentration to be extremely high and exceed the range of the gas detector. If this happens for a long time, it is easy to shorten the life of the gas detector.
If you want to know if your gas detector is reading accurately, it can be a bit difficult. At this time, we must know the concentration of the gas we are using and see if the reading of the detector is consistent with the concentration value we know (national standards allow some errors). If they are consistent or the difference is very small, it means that the gas detector can read correctly.
