Compur Statox 501 IR LC User Manual download pdf (Page 9)

9

Compur Statox 501 Control Module

One for all

Statox 501 HRC and ARE

Two Sensor Heads covering all explosive Hazards

Statox 501 sensor heads HRC and ARE

detect combustible gases in the range

0 – 100 % LEL. Both operate with catalytic

sensors. This sensor type burns the gas

to be detected on the catalytic surface

of the sensing element and thus increases

its internal temperature and electrical

resistance. This parameter is easy to

measure. Therefore these sensor heads

are robust and affordable.

Catalytic sensors respond to any kind of

combustibles although not with the same

sensitivity for different substances. Statox

501 HRC is the better choice for volatile

hydro carbons, while the ARE type is very

good for solvents and fuels.

Both sensor heads operate in conjunction

with the Statox 501 control module which

provides the power supply and processes

the signal. It features three powerful relays

and a 4 – 20 mA analog output.

The combination sensor head / control

module constitutes a complete gas detection

system for combustible gases. There is one

potential disadvantage of catalytic sensors:

Their reliability may be compromised by

catalyst poison or oxygen deﬁ ciency. In this

case one of Compur Monitors infrared gas

detectors will be the better alternative.

Combustible Gases

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