Gas Point XCD-RFD Remote Flammable Gas Detection

Gas Sensors
Class 1 Div 1 Transmitter Hydrogen, methane, Butane, Propane, Pentane, Ethylene
remote gas sensor

In this image the basic XCD-RFD is the yellow housing (1) at the top. The sensor is the steel component (2) at the bottom. The circular component (3) is the remote mounting juntion box.
The conduit (4) in between is for the electrical connection and is not included with the product

Features of the XCD RFD intrinsically safe gas monitors for combustible and explosive gases.
  • Explosion Proof Enclosure
    Class 1 Div 1
  • Sensor up to 100 ft away
  • 3 Color LCD Display
  • Secure non-intrusive calibration
  • Fail Safe contact closures
  • Alarm and Fault relays
  • 3 alarm relays
  • 4-20mA and modbus communciation
  • Works with 301C and other network controller
  • Remote sensor configuration available
  • Calibration port for easy maintenance
  • For toxic gases see XCD RTD


Unrivalled Installation and Maintenance Ease.
You can mount Sensepoint XCD RFD in ducts or on pipes, near ground-level for propane or ceiling-level for methane detection—whatever the situation requiires. The transmitter includes two programmable alarm/fault relays as well as an industry standard 4-20mA output. Calibration and relay operation of the transmitter may be adjusted via the transmitters’ backlit LCD. Outputs are automatically inhibited during adjustment thereby reducing the risk of false alarm at the control panel during maintenance. One-man, non-intrusive maintenance speeds and simplifies life on the job.
Ealarm status indicatorasy Status indication - 3 color backlit display
A tri-color backlit LCD clearly indicates the unit’s status at a glance, even from a distance. A steady green backlight indicates normal operation, flashing yellow indicates fault and flashing red indicates an alarm condition.
Easy Configuration
The scale, range, relay operation, alarm set point and electronic tag number of the detector can be adjusted using the transmitter's LCD and non-intrusive magnetic switches. Outputs are automatically inhibited during adjustment,
thereby reducing the risk of false alarm at the control panel during maintenance.
Easy Installation
Sensepoint XCD has an integral mounting plate for surface mounting or can be mounted to a horizontal or vertical pipe using the optional pipe mounting bracket. Electrical installation can be made using either conduit or cable with suitable mechanical protection. Two ¾”NPT entries are provided. A weatherproof cap is also included for use in the harshest outdoor conditions. Other optional accessories include a sunshade/deluge protection, duct mounting kit and collecting cone
Easy maintenance
Sensepoint XCD ensures easy installation and the fastest routine operation by removing the need for hot work permits in hazardous areas. Using easy to replace plug-in sensors, downtime is also reduced and on-going costs are minimized through the use of poison resistant flammable sensors, poison immune infrared Hydrocarbon sensors and patented Surecell™ toxic sensors and Reflex® sensor health check.


Use 3-wire, 4-20mA, transmitter with optional Modbus for use with remotely mounted flammable gas sensors 705 and 705HT  
Input Voltage Range 16 to 32VDC (24VDC nominal)
Max Power Consumption Max 5 Watts. at 24Vdc (see section 2 regarding maximum in rush current)
Current Output 4-20mA (Source or Sink)
≥0.0<1.0 mA: Fault
4.0 mA to 20.0 mA: Inhibit (during configuration/user settings)
22.0 mA: Maximum over range
Terminals 15 x screw terminals suitable for wire diameter 0.5mm2 to 2.5mm 2 (20AWG to 13AWG)
Relays 3 x 5A@250VAC. Selectable normally open or normally closed (switch) and energized/de-energized (programmable)
Communication RS485, Modbus RTU
Construction Material Epoxy painted aluminium alloy or 316 Stainless Steel
Weight (approx) Aluminium Alloy LM25: 4.4lbs
316 Stainless Steel: 11lbs
Mounting Pole or wall mounting
Cable Entries 2 x ¾” NPT
Sensor Entries ¾” NPT
IP Rating IP66 in accordance with EN60529:1992, NEMA 4X (Tested by third party laboratory)
Operating Temperature -40ºF to +149ºF (-40ºC to +65ºC)
Operating Humidity Continuous 20-90%RH (non condensing), Intermittent 10-99%RH (non condensing)
Operating Pressure 90-110kPa
Storage Conditions -13°F to +149°F (-25°C to +65°C)
US cCSAus approved for Class I, Division 1, Groups B, C & D Hazardous Locations. Performance approved to the following standards; ANSI/ISA-12.13.01
Canada cCSAus approved for Class I, Division 1, Groups B, C & D Hazardous Locations. Performance approved to the following standards; C22.2 No. 152-M1984
Performance C22.2-152, ANSI/ISA 121301

Gases Detected

Gas User selectable
Full scale Range
Default Range Steps User Selectable
Cal Gas Range
Default Cal
Response Time
(T60) Secs
Response Time
(T90) Secs
Accuracy operating temperature Default Alarm Points
Min Max A1 A2
705 Standard Temperature Sensor (UL/CSA Approved)
Flammable 1 to 8* 20 to 100%LEL 100%LEL 10%LEL 25 to 95% of
selected full
scale range
50%LEL   <25 <±1.5%LEL 67°F (-55°C) 176°F (80°C) 20%LEL p 40%LEL p
705 High Temperature Sensor (UL Only)                
Flammable 1 to 8* 20%LEL 20%LEL   10%LEL   <25 <±1.5%LEL 67°F (-55°C) 302°F (150°C) 10%LEL p 15%LEL p
Flammable 1 to 8* 20 to 100%LEL 100%LEL 10%LEL 50%LEL <6 <10 <±1.5%LEL 67°F (-55°C) 302°F (150°C) 20%LEL p 40%LEL p

Gas Displayed Name 705 Sensor
Calibration Gas
Adjust to 705HT Sensor
Calibration Gas
Adjust to
Methane** CH4 50% Methane/air 50% 50% Methane/air 50%
Hydrogen H2 50% Hydrogen/air 50% 50% Hydrogen/air 50%
Butane C4H10 50% Butane/air 50% 50% Butane/air 50%
Propane C3H8 50% Propane/air 50% 50% Propane/air 50%
Pentane C5H12 50% Pentane/air 50% 50% Pentane/air 50%
Ethylene C2H4 50% Ethylene/air 50% 50% Ethylene/air 50%

Ordering information

Kits - cCSAus Certified for North America (Class I, Div. 1, Groups B, C & D)
TRFDLM Transmitter with LM25, 3/4 in. NPT entry, Modbus, aluminum, 705 sensor, and 3 wire junction box $1594.00
TRFDLMH Transmitter with LM25, 3/4 in. NPT entry, Modbus, aluminum, 705 High Temp sensor, and 3 wire
junction box

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