How to Correctly Operate Flammable Gas Detectors
Everyone should have a question, how can I determine if a combustible gas detector is effective after purchasing it? In fact, this method is very simple. Most workshops will store experimental gases. We just need to put some gas or liquid into a mineral water bottle, screw on the lid, insert a small hole with a pointed object on the lid, and align this small hole with the probe of the combustible gas detector to see if the reading on the gas detector panel has changed.
Special attention should be paid to the fact that some combustible gases are in liquid form and evaporate slowly. Therefore, in the experiment, it is necessary to shake the mineral water bottle to accelerate their evaporation. Another point: Fixed gas detectors are generally naturally diffusing, and the equipment will only react when the leaked gas spreads to the alarm device.
If you find this method troublesome, you can use a lighter to test whether the gas detector can read. Method: Use a lighter to blow out the flame, but do not release your hand to keep the lighter in a deflated state. Aim the lighter at the gas detector probe, but do not hold it for too long as the combustible gas concentration in the lighter is high. Prolonged use can easily cause the gas concentration to exceed the range of the gas detector, which can shorten its lifespan.
It's a bit difficult to know if the gas detector is reading accurately. At this point, we must know the concentration of the gas we are using, and check whether the reading of the gas detector is consistent with the concentration value we know (according to national standards, some errors are allowed). If it is consistent or the difference is very small, it indicates that the gas detector can read correctly.
