Gases
Murco utilises four sensor technologies to detect a wide range of gases in a variety of applications:
1- Semiconductor (SC):
These sensors can be used for a variety of gases including combustible, toxic, and refrigerant gases. They are very economical and have a lifespan of 5 to 8 years. They are prone to cross sensitivity, but this has been overcome by using filtered sensors, time delay in the electronics, and adjusting the alarm thresholds.
2- Electrochemical (EC):
These sensors are used where gases can undergo an oxidation/reduction reaction. They are very selective, measure at very low levels and are highly accurate. We recommend them for toxic gas applications. We use long life sensors with a lifespan typically of about 3 years.
3- Catalytic (CAT):
These are mainly used in combustible gas applications where detection at high concentrations, up to 100% LEL, is required. They respond to all combustible gases but at difference rates and so can be calibrated for a particular gas. Lifespan is about 5 years.
4- Infrared (IR):
Sensors can be specific, are very accurate, and have a long life span (about 10 years). They are particularly suitable for Carbon Dioxide detection.
