This sensor incorporates a pulsed infrared source, a gas sample cell, optical filter and detector which provides an electrical output, 4/20mA linear, converted to gas concentration values.

There are NO moving parts.

The sensor life expectancy is long, eight (8) - ten (10) years.

Sensor life is NOT shortened if exposed to interference gas.

This sensor is very selective to NH3. It will not trip on most gases seen around machine rooms and food processing facilities.

It should only be used for trip levels at 1% to 2% NH3 concentrations.

Requires modification for temperatures below +40°F.

Special enclosures are required in high moisture and wash down areas.

Keep sensors away from variable speed drives, walkie-talkies, radio repeaters and high-pressure sodium/mercury vapor lights.

Sensor exhibits excellent fail safe characteristics. This unit in almost all cases will NOT fail silently.

Ideal for machine rooms where ventilation air may be contaminated, i.e., make up air from inside plants versus outside air.

Good for enclosed freezers, coolers, and docks where semi-conductor and catalytic combustion sensors could be contaminated by silicone and solvent vapors from insulation and other low-level contaminants.

This sensor is ideal for system shutdown when NH3 concentrations reach the low percent (%) levels.

Outdoor gas sensing is never simple, whether it is monitoring rooftop units, around tank storage areas, or perimeter monitoring.  Regardless of the number of sensors in place or the technology used, you are always at the mercy of winds and other weather conditions.

Sensors must be housed to withstand extremes of cold and heat, plus rain, snow, etc.

Manning Systems has developed unique methods of dealing with these ever-changing conditions to protect the sensor and increase the probability of catching a leak in time for emergency response and containment of the problem.

The Model EC-NH3 or Model SB-NH3 are two excellent sensors for outdoor applications, depending on environmental conditions and required trip levels.

When discussing outdoor applications, please provide information about the plant location, potential gas interference from neighboring industry, proximity to roads, schools, hospitals, residential areas, distances to sensors from monitoring equipment, etc...  All of this information improves the chances of catching a leak, even in difficult circumstances.