Introduction - Honeywell Sensepoint XCD RFD Technical Handbook

Sensepoint XCD RFD Technical Manual

4 Introduction

The Sensepoint XCD RFD ("Exceed RFD") transmitter allows the user to either directly
or remotely mount a flammable gas sensor from the Sensepoint XCD , Sensepoint and
705 sensor ranges. The remote sensor can be located up to 30 meters (100 feet) from
the transmitter. The transmitter features a display and three programmable relays for
controlling external equipment e.g. alarms, sirens, valves or switches. The transmitter
provides an industry standard 3-wire, 4-20mA source or sink output for connection to a
dedicated gas detection control system or PLC.
The construction of Sensepoint XCD RFD allows it to be used in hazardous area locations;
it may also be used in other areas not classified as hazardous. Sensepoint XCD RFD is
suitable for use in Zone 1 or 2 hazardous areas (International).
Calibration and maintenance is carried out using a Magnetic Wand, this allows a single
user to undertake routine maintenance without needing to access internal components.
Sensepoint XCD RFD comprises of the main parts as shown below.
Display Module
Ex d Plug
Cover
Locking
Grub
screw
M20 or 3/4"NPT cable/conduit entries
(x2)
Terminal Module
Seal
M25 or 3/4"NPT entry for
Flammable Sensor or Remote Sensor Cable Gland
Diagram 1. – Exploded View
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SPXCDHMRFEN Issue 4_08-2016
Certification Label
Integral
mounting plate
Internal Earth
External Earth
Enclosure
Point
Point (x2)