The IR series of infrared gas detection sensors, from N.E.T. (Italy),
use the technique of NDIR sensor (Non Dispersive Infrared) to monitor the
presence of SF6 or refrigerants.
This technique is based on the fact that the gas has a 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 by 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 linearised and temperature compensated. The
output is analogue voltage type [0.4 V—2 V] dc (other voltages are
available on request). IREF P is now SIL2 approved.
The main features are: analogue voltage standard output, incorporated
signal, linearisation and temperature compensation suited for instrument
manufacturers without any specialist knowledge in IR technology,
standard sensor size 32 mm, fast response, solid, rugged construction,
wide operating temperature and humidity range (-20°C +60°C) and new
optics “Variable Geometry".
iSweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products
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