Safety first - Always

People need oxygen to live. It is vitally important that the oxygen concentration in the air we breathe remain above a minimum value. Oxygen sensors are installed in hazardous workplaces which monitor the breathing air and warn if the oxygen content falls below a predefined level. 
In addition to oxygen deficiency, leaks of flammable or toxic gases can cause explosions or harmful atmospheres. Depending on the substances which are in use, special sensors must be installed to protect employees from potential risks. These sensors monitor the threshold values for toxic and flammable gases in hazardous areas and trigger an alarm if environmentally harmful substances are released.

Specific Test Gas Mixtures for Sensor Testing

Sensors are adjusted to specific alarm limits and their function must be checked regularly. Fixed sensors in explosion protection zones must be regularly checked with test gas mixtures with 20%, 40% or 50% of the Lower Explosive Limit (LEL), for example. 
Messer offers a wide range of sensor test gases in small cylinders or practical pressure cans.