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Maintenance
CAUTION
The detector contains no user serviceable components. Service or repair should never be
attempted by the user. Device repair should be performed only by the manufacturer or
trained service personnel.
LIABILITIES
The manufacturer's warranty for this product is void, and all liability for proper function of the
detector is irrevocably transferred to the owner or operator in the event that the device is serviced or
repaired by personnel not employed or authorized by Prosense, or if the device is used in a manner
not conforming to its intended use.
Proactive maintenance:
All gas detectors including both for flammable and toxic gases should have to pass a functional
test and calibration every three to twelve months according to EN 60079-29-2 industrial
standards. The test results and calibration reports should be recorded in maintenance books.
Operational Life:
Typical operational life time is 10 years and it depends on conditions equipment used and below
sensing element details.
Catalytic flammable gas sensor made by using the pellistors that suffer from a loss of sensitivity
when in the presence of poisons or inhibitors, e.g. silicones, sulphides, chlorine, lead or
halogenated hydrocarbons. The pellistors are poison resistant to maximize the operational life
of the Catalytic flammable sensor. A typical operating life, subject to the presence of
poisons/inhibitors is 48-60 months.
The infrared flammable gas sensor is not affected by the mentioned poisons and has a longer
life span around 5 years.
Typical life of a toxic gas sensor which made by electrochemical component is dependent on
the application, frequency and amount of gas exposure. Under normal conditions (visual
inspection in 3 months period and test/recalibration in 6 months period), the Prosense Oxygen
and other toxic sensors have an expected life equal to or greater than 24 months.
Sensor module replacement:
The sensors are mounted to sensor electronic module inside the detector eclosure cover and it
is possible to perform replacement in the field. Once replacement sensor on hand follow the
steps given below:
1-
Power-off the detector via disconnecting power cable from control panel or supply
2-
Use screwdriver to remove 4 screws on front panel
3-
Remove front panel form enclosure body
4-
Use screwdriver to remove screws from PCB holder
5-
Remove enclosure cover.
6-
Remove sensor module from main PCB connectors.
PRS-UM-SV-EN-Rev1.0-16.12.2022
Page 35 / 41
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