Coster RFG 361 - User Manual

1
G 521 - RFG 361
C1 Eng. 25.11.08 MZ Rev. 02
We reserve the right to make changes without notice
COSTER
GAS DETECTOR WITH
REMOTE SENSOR
• Remote sensor for detecting methane, propane-LPG, carbon monoxide (CO)
• Sensors with sensing element specific for each type of gas
• 1 SPDT voltage-free output relay
• Adjustable alarm threshold (for methane and propane-LPG)
• Self-diagnosis sensor fault
• Construction and operation according to
CEI EN 50194 and CEI EN 50244 for Methane and Propane LPG
CEI EN 50291 and CEI EN 50292 for CO - carbone monoxide
• Installation on DIN rail; Protection IP 40
• Power supply 230 V ~
1. APPLICATION
RFG 361 is designed for the detection of gas in spaces such as: boiler rooms, laboratories, workshops, garages.
parking silos.
According to the type of sensor connected, monitors the concentration in air of the following gases: methane,
propane-LPG, carbon monoxide.
The sensors used are selective, and so are not influenced by gases other than that for which they are dedicated.
They have the following characteristics:
– methane and propane-LPG: sensors with semiconductors rendered selective by means of special filters
,
– carbon monoxide (CO): the sensor is an electrochemical cell with two electrodes specific for CO
.
The detector provides as outputs a pre-alarm signal and an alarm signal
• exceeding the pre-alarm threshold is indicated visibly by a flashing light.
,
• exceeding the alarm threshold is indicated by visible and acoustic warnings and, by means of an output relay,
permits making an operational intervention such as, for example
:
– closing a N.C. shut-off valve
,
– closing a N.O. shut-off valve
,
– switching on an aeration fan
,
–sending an alarm signal to a remote site
.
RFG 361 C1 Eng.
Code Description Gas Sensing element
"SELECTIVE"
Protection Data
sheet
SRD 150
SRD 250
SRD 350
SRS 150
SRS 250
SRS 350
Sensor in domestic enclosure
Sensor in domestic enclosure
Sensor in domestic enclosure
Sensor in industrial enclosure
Sensor in industrial enclosure
Sensor in industrial enclosure
methane
propane-LPG
carbon monoxide
methane
propane-LPG
carbon monoxide
Figaro TGS 2611-E00
Figaro TGS 2610-D00
Sixth-Sense ECO-Sure/2e
Figaro TGS 2611-E00
Figaro TGS 2610-D00
Sixth-Sense ECO-Sure/2e
IP 30
IP 30
IP 30
IP 44
IP 44
IP 44
–
–
–
–
–
–
2. GAS DETECTING SENSORS
G 521
25.11.08 MZ
Rev. 02

Summary

1. APPLICATION

2. GAS DETECTING SENSORS

3. OVERALL DIMENSIONS

4. FACIA

5. TECHNICAL DATA

6. SITING OF DEVICE

6.1 Detector

Guidelines for detector placement in dry spaces meeting environmental requirements.

6.2 Sensors

Correct sensor siting based on gas density and avoiding specific locations to prevent false alarms.

6.3 Solenoid shut-off valve

Precautions for installing solenoid shut-off valves on gas distribution pipes.

7. ELECTRIC WIRING

8. WIRING DIAGRAMS

8.1 General diagram

Overview of the detector's wiring connections and jumper functions.

8.2 Examples of wiring

Illustrates wiring configurations for N.O. and N.C. valves and aeration fans.

9. OPERATION

9.1 Switching on

Describes the initial startup stabilization period and LED indications.

9.2 Pre-alarm and alarm threshold for methane and propane (LPG)

Details pre-alarm and alarm levels for methane and propane, including sensitivity adjustment.

9.3 Pre-alarm and alarm threshold for carbon monoxide (CO)

Explains CO detection, toxicity, and the dynamic response to concentration and time.

9.4 Pre-alarm

Indicates pre-alarm status via intermittent ALARM LED flashing.

9.5 Alarm

Describes alarm activation, LED status, and relay output behavior.

9.6 Latching and restoration

Explains how to program latching behavior and reset the alarm state.

9.7 Autodiagnosis

Lists faults detected by the system and associated warning LEDs.

9.8 Life of sensors

Specifies the expected lifespan of semiconductor and electrochemical sensors.

10. TESTING

11. WARNING: IN EVENT OF ALARM!

Coster RFG 361 Specifications

General

Gas Type	Combustible Gases
Measurement Range	0-100% LEL
Operating Temperature	-20°C to +50°C
Response Time	<30 seconds
Power Source	Battery
Detection Gas	Methane, Propane, Butane
Detection Principle	Catalytic
Power Supply	battery
Sensor Type	Catalytic Bead