Directly Mounted Sensor; Remotely Mounted Sensor - Honeywell Sensepoint RFD Technical Manual

0-20% lel and 0-100% lel remote flammable detector

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SENSEPOINT RFD OPERATING MANUAL

5.3.1 Directly mounted sensor

To mount a sensor directly to the Sensepoint RFD transmitter follow the procedure

below.

1. Ensure that the ¾" NPT to M20 adaptor is fitted to the bottom entry if using a

sensor with an M20 thread, or is removed if using a sensor with a ¾" NPT

thread.

2. Remove the transmitter's cover by loosening the locking screw and

unscrewing the cover in a counter-clockwise direction.

3. Remove the display module by firmly pulling it away from the enclosure

without twisting it.

4. Feed the sensor wires through the bottom entry into the terminal area.

5. Firmly screw the sensor thread into the bottom entry (or adaptor).

6. Connect the sensor wires to the terminals as shown in section 6.

A remotely mounted sensor should be mounted using a suitable junction box or

approved electrical conduit scheme. For further details regarding mounting sensors

to suitable junction boxes refer to the relevant sensor manual.

1. Connect the remote sensor/junction box to the Sensepoint RFD transmitter

using suitable cable or conduit with wires of diameter 1mm

2. Connect the cable/conduit to the transmitter enclosure via the bottom entry.

3. Cable (non conduit) based installations must use appropriately certified cable

glands.

Note: The maximum cable length between the remotely mounted sensor and the

Sensepoint RFD transmitter is 45 meters (147 feet).

4. Terminate the wires from the sensor in the transmitter as shown in section 6.

RFDMAN MAN0843 Issue 3

(17 AWG).

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