Yes that’s right – Crowcon is another year wiser making our business 45 years old. From the humble beginning of gas engineers wanting to improve the safety of their workplace, to today, where our detectors are used in 100’s of applications across tens of thousands of sites worldwide, one thing remains; our focus on Saving Lives!
Calibration of gas detectors is vital to be sure that they are in good working order and able to alert the user to gas hazards in their vicinity. A calibration is a “resetting” of the detector’s response against a known concentration of target gas, in a balance of synthetic air or nitrogen. This will determine the relationship between the detector’s reading and the actual concentration of the component gas of interest. Adjustment involves modification of the detectors response to bring the reading into line with what is expected while exposing the instrument to the known source. This is fundamentally different to bump testing which is a brief exposure to gas in order to verify that the sensors respond within a specific boundary and the detector’s alarms function properly.
There are many reasons why a portable gas detector may not react to gas, some of which are not visibly evident to the user. When an instrument is turned on, you can see that the battery and display are working properly, but what about the internal electronics which play a critical role in protection? Do the sensors and alarms all work, have they been inhibited by using the wrong cleaning solution or have their openings become obstructed by mud? How do you know?