Gas Detectors. Reliable Gas Safety Systems

In this Ask John we explain confined spaces and the lurking hazards. Then we answer the question… Why use gas detectors when working in confined spaces?

Confined space definition…

“An enclosed or partially enclosed space that is not intended or designed primarily for human occupancy. It is liable to have an atmosphere that contains harmful contaminants or not contain a safe oxygen level. It may have contents that could cause engulfment. It may have restricted means for entry and exit.”

Source: Worksafe

Breaking it down

A confined space is…  [Read more…]

Gas detectors use sensors to measure the levels of target gases. Why calibrate new sensors? Sensor performance is prone to drift over time and with exposure to gaseous environments. That’s why you need to calibrate them regularly – to ensure the sensors are working accurately.

What does the calibration process involve? Calibration involves testing the sensors against a known calibration standard and adjusting to correct for any inaccuracies.  The “known calibration standard” is the contents of your calibration gas bottle.

Why do I still need to calibrate even when the gas detector is fairly new? Well, as [Read more…]

All electrochemical or catalytic gas monitor sensors can be prone to both positive and negative drift due to environmental factors such as changes in temperature and humidity.

However these are not the most common causes of negative readings.

Negative sensor readings more commonly occur when [Read more…]