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SENSEPOINT RFD OPERATING MANUAL
11 General Maintenance
Access to the interior of the transmitter, when carrying out any work, must only be
Before carrying out any work ensure local regulations and site procedures are
followed. Appropriate standards must be followed to maintain the overall
To reduce the risk of ignition of hazardous atmosphere, de-classify the area or
disconnect the equipment from the supply circuit before opening the transmitter
enclosure. Keep assembly tightly closed during operation.
Never attempt to open a junction box/enclosure or replace/refit the sensor in
Only replace the Remote Handheld Interface batteries in a non hazardous area.
Only replace the batteries with approved 'AAA' alkaline batteries, Energizer E92 or
Duracell MN2400. Use only two new batteries of the same type when replacing
batteries. The Handheld Remote Interface has no serviceable parts.
Do not tamper or in any way dis-assemble the sensor.
Do not expose to temperatures outside the recommended range.
Do not expose sensor to organic solvents or flammable liquids.
At the end of their working life, sensors and batteries must be disposed of in an
environmentally safe manner. Disposal should be according to local waste
management requirements and environmental legislation.
Alternatively, sensors may be securely packaged and returned to Honeywell
Analytics clearly marked for environmental disposal.
Substitution of Handheld Remote Interface components may impair its Intrinsic
Safety (IS). To prevent ignition of flammable or combustible atmospheres,
disconnect power before servicing the Handheld Remote Interface.
Honeywell Analytics recommend that gas detectors are tested and re-calibrated
frequently, or according to site practice. Refer to the individual sensor manuals (listed
in section 11.2) for specific recommended calibration periods. The detector must be
calibrated initially as part of the commissioning procedure, see section 9.
11.1 Operational Life
The pellistors used in the flammable gas sensor can suffer from a loss of sensitivity
when in the presence of poisons or inhibitors, e.g. silicones, sulfides, chlorine, lead or
halogenated hydrocarbons. The pellistors are poison resistant to maximize the
operational life of the flammable sensor. A typical operating life, subject to the
presence of poisons/inhibitors is 36 months.
WARNINGS
conducted by trained personnel.
certification of the sensor and transmitter.
potentially hazardous atmospheres.
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RFDMAN MAN0843 Issue 3
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