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
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–
–
–
–
–
2. GAS DETECTING SENSORS
G 521
25.11.08 MZ
Rev. 02
