Advanced NDIR sensor for SF6 or refrigerants detection

 

refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. Most of the gases in refrigeration plants have adverse environmetal effects and could be dangerous for humans. The IR series of N.E.T.infrared gas detection sensors use the technique of NDIR (Non Dispersive Infrared) to monitor the presence of SF6 and refrigerants. This technique is based on the fact that the gas has an unique and well defined light absorption curve in the infrared spectrum that can be used to identify the specific gas.
The gas concentration can be determined by using a suitable infrared source and analysing the quantity of energy absorbed from the gas inside the optical path. The IREF-P sensor is equipped with electronics and firmware in order to provide an output that is linearized and temperature compensated.
The output is analogue voltage type [0.4 V—2 V] dc (other voltages are available on request).
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IREF -A
(aspiration version).
As  IREF, with built-in gas inlets (for 4mm or 6 mm tubing)
Standard sensor size 32mm
Linearized voltage output
Micro technology based (MEMS) IR source

IREF – A

 

 

NDIR Sensors are now available for the following detectable gases:

SF6
Ethylene
R-1234yf
R-1234ze
R-507
R-125
R-134a
R-404a
R-407a
R-407f
R-410
R-449
R-417a
R-448a
R-452b

R-32

Other Refrigerants are available on request