Honeywell Sensepoint XCD User Manual

Sensepoint XCD Technical Manual SPXCDHMANEN Issue 15
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Operational Life
The pellistors fitted in the Flammable Catalytic sensors are poison resistant to maximize the
operational life of the sensor, however they can suffer from a loss of sensitivity when in the presence
of poisons or inhibitors, e.g. silicones, sulfides, chlorine, lead or halogenated hydrocarbons. A
typical operating life, subject to the presence of poisons/inhibitors is 36 months.
The NDIR (infrared) flammable gas sensor is not affected by the above-mentioned poisons and
therefore, has a longer life span. A typical operating life is 5 years.
The typical life of a toxic gas sensor is dependent on the application, frequency and amount of gas
exposure. Under normal conditions (3 monthly visual inspection and 6 monthly test/re- calibration), the
Sensepoint XCD Oxygen and other toxic sensors have an expected life equal to or greater than 24
months.
Refer to chapter 11.1 for sensor replacement procedures.
CAUTION
Oxygen deficient atmospheres (less than 6 % v/v) may result in inaccuracy of
reading and performance.

Honeywell Sensepoint XCD Specifications

General

Type	Fixed Gas Detector
Ingress Protection	IP66/67
Display	LCD
Output	4-20 mA, Relay
Certification	ATEX, IECEx
Sensor Type	Electrochemical, Infrared
Humidity	0 to 99% RH (non-condensing)
Material	Stainless Steel
Detection Principle	Depends on Sensor Type
Power Supply	24 VDC nominal (17-32 VDC)