Infrared NH₃
IR-F9

The IR-F9 ammonia 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.

Characteristics

• Long Life (i.e., 8-10 years). Sensor life is not shortened if exposed to interferent gas.
• Sensor is very selective to NH₃. Will not trip on most gases present around machine rooms and food processing facilities.
• Should only be used for trip levels at 1% to 2% NH₃ concentrations (i.e., no lower).
• For temperatures below +40°F, the IRF9 must have the optional ATMOS equipped^® technology that allows it to meet all of its performance specifications down to -50° F and in condensing humidity environments or during washdown. ATMOS (Adaptive Temperature and Moisture Optimizing System) is a comprehensive, enviro-adaptive technology that actually senses the surrounding environment and creates a controlled, mini-atmosphere inside the sensor enclosure to optimize the air sample quality. ATMOS allows the IRF9 to automatically adapt to its environment and provide accurate and reliable performance under the harshest conditions.
• Keep sensors away from variable speed drives, walkie-talkies, radio repeaters, high pressure sodium / mercury vapor lights and vibrating surfaces.
• Sensor exhibits excellent fail-safe characteristics. This unit in almost all cases will not fail silently.

Where to apply

• Ideal for machine rooms where ventilation air may be contaminated, i.e., make up air from inside plant versus outside air.
• Good for enclosed freezers, coolers, docks where semi-conductor and catalytic combustion sensors could be contaminated by silicone and solvent vapors from insulation and other low level contaminants.
• An ideal sensor for system shutdown when NH₃ concentration reaches the low percent (%) levels.