Many workers will operate machinery without much thought as to how and why it works or in some cases as to whether it is actually working properly at all.
So the question is, how do you know whether your gas detector is functioning correctly?
Answer - the only true way to confirm that a gas detector is functioning and is capable of responding to gas is to expose the gas detector to a concentration of target gas that is high enough to initiate an alarm situation.
This process is often called a 'Bump Test' or 'Challenge Test'.
Worplace environments can be harsh on your gas detector and subject it to extreme shock such as being dropped from heights, run over by heavy vehicles, exposed to high temperatures, humidity, water, mud, dust, chemicals and toxic gases. As a service facility we have seen many gas detectors that have been exposed to environmental or human interference, including accidental / deliberate damage caused by piercing the sensors, destroying the audiable alarm piezo and breaking the casing seal to name a few. You have to ask yourself do you really want to put your life into the hands of a gas detector that may not be functioning properly?