Sensepoint XCD RFD

Explosion-Proof Transmitters

Your most flexible, practical choice for remote flammable gas monitoring in Class 1, Div 1 areas.
Features & Benefits
Accurate detection with fast response
Mount sensor up to 100 ft. from transmitter
Easy to read tri-color backlit display
Quick Specs
Input voltage range: 16 to 32 VDC (24 VDC nominal)
Communication: RS485, MODBUS RTU

Mounting: Pole or wall

Product Overview

Sensepoint XCD RFD (Remote Flammable Detector) has been specifically designed for use with remotely mounted flammable gas sensors. This configuration is ideal for applications where the sensor is required to be mounted remotely from the transmitter in areas where temperatures are well above ambient (up to 150°C/302°F), or that are difficult to access. The transmitter can be mounted at a suitable location away from this area where it is easy to access, view its display and interact with via the user interface.

Accessories

Sensepoint XCD RFD Calibration cup (flow adapter) for Series 3000 and XNX EC toxic sensors
S3KCAL
Calibration cup (flow adapter) for Series 3000 and XNX EC toxic sensors.

Sensepoint XCD RFD Collecting cone
SPXCDCC
Collecting cone for use with lighter than air gases.

Sensepoint XCD RFD Honeywell Junction Box
00780-A-0100
Honeywell Junction Box- Bartec OTB122 With Continuity Plate 1 X 25mm - 3 X 20mm Entries - ATEX Approved.

Sensepoint XCD RFD
Remote Flammable Gas Monitor
XCD RFD adds safety, productivity
and cost efficiency by extending
intelligent, reliable gas monitoring
to hard-to-reach areas
High Value Sensing Technology
• Poison-resistant catalytic bead
sensors offer reliable, long-lasting
sensing life in an explosion-proof
assembly
• Low power consumption, reducing
cost of ownership
• Accurate detection with
fast response
Easy-Mount Utility
• Mount transmitter in easy to
access area even if sensor is
located in difficult or restricted
access area
• Mount sensor up to 100 feet
from transmitter
• Mounting hardware available
for pipe, duct and junction box
installations
Easy to Use
• Easy to read tri-color backlit
display with digits, bar graph
and icons
• Fully configurable via non-intrusive
magnetic switches
• Selectable sink or source
4-20mA output
• Auto-inhibit during maintenance
prevents false alarms
Cost Effective
• Common transmitter platform:
monitor full range of flammable
gases
• Longer sensor life compared to
electrochemical sensors
• Simple operation cuts
training costs
• Reduced spares and stock costs
• Non-intrusive, one-man operation
reduces maintenance cost
• Optional Modbus adds diagnostic
capabilities and advanced
intelligence to further reduce costs
APPLICATIONS GUIDE

Sensepoint XCD RFD specifications

Use 3-wire, 4-20mA, transmitter with optional Modbus for use with remotely mounted flammable gas sensors 705 and 705HT
Electrical
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
Detectable Gases and XCD RFD Sensor Performance
Gas User Selectable
Full Scale Range
Default
Range
Steps User Selectable
Cal Gas Range
Default Cal
Point
Response Time
(T60) Secs
Response Time
(T90) Secs
Accuracy Operating Temperature
Min Max
Default Alarm Points
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
p Rising Alarm
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%
**Performance testing conducted with Methane calibration only

NOTES
Performance figures are taken at 20~25º.
1. Measured using a sample humidity of 50%RH, applicable between 10 and 90% of full scale.
2. Measured using test units calibrated at 50% of full scale.
Response time (T90) may increase when operating in lower or higher temperature conditions or when gas is introduced with the Weather Protection accessory fitted.
Should it be exposed to other HC then non linear response is expected. For linearized operation other than Methane contact HA for alternate parts. This calibration enables 100%
functional test prior to dispatch.
This calibration does not remove need for calibration & test as part of commissioning at site. For gases other than Methane the unit has to be calibrated at site using target gas.
Data represents typical values, and system conditioning may be required to achieve stated result. Contact Honeywell Analytics for details.
Environmental
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)
Certification
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