Honeywell Sensepoint XCD RFD Data sheet

Sensepoint XCD RFD SPECIFICATIONS

Remote Flammable Gas Monitor

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

705 Standard Temperature Sensor (UL/CSA Approved)

Flammable 1 to 8* 20 to 100%LEL 100%LEL 10%LEL

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

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

*Contact Honeywell Analytics for availability.

Gas Displayed Name 705 Sensor

Methane** CH

Hydrogen H

Butane C

Propane C

Pentane C

Ethylene C

**Performance testing conducted with Methane calibration only.

Full Scale Range

Default

Range

4

2

4H10

3H8

5H12

2H4

Steps User Selectable

Cal Gas Range

25 to 95% of

selected full
scale range

Calibration Gas

50% Methane/air 50% 50% Methane/air 50%

50% Hydrogen/air 50% 50% Hydrogen/air 50%

50% Butane/air 50% 50% Butane/air

50% Propane/air 50%

50% Pentane/air 50%

50% Ethylene/air 50% 50% Ethylene/air 50%

Default Cal

50%LEL <25 <±1.5%LEL 67°F (-55°C) 176°F (80°C) 20%LEL p 40%LEL p

Point

Response Time

(T60) Secs

Response Time

(T90) Secs

Adjust to 705HT Sensor

Accuracy Operating Temperature

Min Max

Calibration Gas

50% Propane/air

50% Pentane/air

Default Alarm Points

A1 A2

p 15%LEL p

p Rising Alarm

Adjust to

50%

50%

50%

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

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Please Note:

While every effort has been made to ensure accuracy in this publication, no responsibility can be accepted for errors or omissions.
Data may change, as well as legislation, and you are strongly advised to obtain copies of the most recently issued regulations,
standards, and guidelines. This publication is not intended to form the basis of a contract.

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