Installation - Honeywell Sensepoint XCD RTD Technical Manual

Sensepoint XCD RTD Technical Manual

5 Installation

Sensepoint XCD is designed for installation and use in Zone 1 or 2 hazardous areas in
many countries including Europe and for Class 1 Division 1 or 2 area applications in North
Installation must be in accordance with the recognized standards of the appropriate
Access to the interior of the detector, when carrying out any work, must only be conducted
Before carrying out any work ensure local regulations and site procedures are followed.
Appropriate standards must be followed to maintain the overall certification of the detector.
Care should be taken when removing and refitting the Sensepoint XCD plug-in Sensor to
the Sensor Socket so that damage to the connection pins can be avoided.
For installations where conduit is used, and the sensor is mounted directly to the
Sensepoint XCD, there must be a "Seal Fitting" installed for each of the cable gland entries
within 18 inches of the Sensepoint XCD. For installations where the sensor will be mounted
remotely from Sensepoint XCD, an additional "Seal Fittings" will be required: One at each of
the conduit entries for the power/signal/relay contact outputs and one at the sensor wiring
entrance. The total distance of the location of these Seal Fittings is 18 inches. (e.g. If all 3
gland entries are to be used, 3 Seal Fittings should be located, each within 6 inches of the
If using an anti-seize compound, the threads should be thinly coated with an approved
To reduce the risk of ignition of hazardous atmosphere, de-classify the area or disconnect
the equipment from the supply circuit before opening the detector enclosure. Keep
Never attempt to open a junction box/enclosure or replace/refit the sensor in potentially
hazardous atmospheres while power is still applied to the transmitter.
The detector must be earthed/grounded for electrical safety and to limit the effects of
radio frequency interference. Earth/ground points are provided inside and outside the unit.
Ensure that all screens/instrument earth/clean earth wiring is earthed/grounded at a single
point (either at the controller or detector - BUT NOT BOTH) to prevent false alarms due to
Take care when handling sensors as they may contain corrosive solutions.
Do not tamper with or in any way disassemble the sensor.
Do not expose to temperatures outside the recommended ranges.
Do not expose sensors under storage conditions to organic solvents or flammable liquids.
At the end of their working life, replacement electrochemical sensors for oxygen and toxic
gas must be disposed of in an environmentally safe manner. Disposal should be according
to local waste management requirements and environmental legislation.
Alternatively, old replaceable sensors may be securely packaged and returned to Honeywell
Electrochemical sensors should NOT be incinerated as this action may cause the cell to
Refer to the local or national regulations relative to the installation at the site. For Europe
This equipment is designed and constructed as to prevent ignition sources arising, even in
the event of frequent disturbances or equipment operating faults.
Note: Ensure that a suitably rated fuse is used in the gas detection control system
to protect the Sensepoint XCD RTD power supply from potential damage.
WARNINGS
authority in the country concerned.
by trained personnel.
wiring entrance).
silicone free compound e.g. petroleum jelly
assembly tightly closed during operation.
earth/ground loops.
Analytics clearly marked for environmental disposal.
emit toxic fumes.
see EN60079-29-2, EN60079-14 and EN61241-14.
Only assessed for ATEX for ignition hazards.
America.
9
SPXCDHMRTEN Issue 1