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Combustible Gas Detectors with Analoge Output - G-series

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• Sensor element: Pellistor (Catalytic Bead)
• Accuracy: +/-1%
• Resolution: 0.2%
• Response time t90: <15 sec.
• Zero Point variation: 0.5%
• Long-term zero-point drift: <0.5% LEL
• Long-term sensivity drift: <1%
• Temp. range: +20 °C to +50 °C
• Humidity range: 5 to 95% RH non-condensation

Model Number: G-series
Data Sheet:

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Product Specification

Combustible gas detector G-series for wall mounting

G-series Combustible Gas Detectors Gases
• Methane, CH4
• Liquid Petroleum Gas, LPG
• Hydrogen, H2
• Propane, C3H8
• Ethylene, C2H4
• Ethyl alcohol, C2H5OH
• Methanol, CH3OH
• Acetone, C3H6O
• Isopropyl alcohol, C3H8O
• Iso/n-Butane, C4H10
• Toluene, C7H8
• Petrol Vapors
On request: other combustible gas detectors

G-series Combustible Gas Detectors Features
• Pellistor (Catalytic Bead) sensor
• Power supply 24 Vdc for output 4-20 mA
• Power supply 24 Vac for output 2-10 Vdc
• Measuring ranges: see ordering on page
• IP65 enclosure with quick locking screws
• Digital measurement value processing incl. temperature compensation
• Internal function control with integrated hardware watchdog
• Data / measured values in micro controller of sensor unit, therefore simple exchange uncalibrated <> calibrated
• High accuracy, selectivity and reliability
• Low zero point drift
• Hardware & software according to SIL2 compliant development process
• Easy maintenance and calibration by exchange of the sensor unit or by comfortable on-site calibration

G-series Combustible Gas Detectors Options
• LCD display
• LCD display for values & operation, 2 x open-collector for horn & warning lamp.
• Duct mounting set available for sensing combustible gas in ventilation ducts.

G-series Combustible Gas Detectors Technical data

Electrical
Power supply	16-29 Vdc, reverse-polarity protect.; 18-27 Vac (only for output signal 2-10 Vdc)
Power consumpt.	75 mA, max. (1.8 VA for 24 V)
Analog output signal	Proportional, overload and short-circuit proof, load < 500 Ohm for current signal, < 50 kOhm for voltage signal 4 - 20 mA or 2 - 10 V = measuring range 3.2 < 4 mA or 1.6 - 2 V = under range > 20- 21.2 mA or 10 - 10.6 V = over range 2 mA or 1 V = fault > 21.8 mA or 10.9 V = fault High
Sensor performance
Gas type	See Order Information
Sensor element	Pellistor (Catalytic Bead)
Accuracy	+/-1%
Resolution	0.2%
Response time t90	<15 sec.
Zero Point variation	0.5%
Long-term zero-point drift	<0.5% LEL
Long-term sensivity drift	<1%
Temp. range	+20 °C to +50 °C
Humidity range	5 to 95% RH non-condensation
Sensor life time	> 36 months / normal ambient conditions
Calibration interval	6 months
Poisoning
Pressure range	Atmospheric ± 20 %
Storage temp.	+5 °C to +30 °C
Storage time	6 months
Poisoning	Sensitivity of pellistor sensor can be influenced by substances containing silicon compounds and even poisoned and destroyed them
Physical
Housing	Polycarbonate UL 94 V2
Enclosure color	RAL 7032 (light grey)
Dimensions	(W x H x D)94 x 130 x 57 mm
Protection class	IP 65
Wire connection	Screw-type terminal min. 0.25 mm2, max. 1.3 mm2 ,3-pin
Directives	EMC directives 2014/30/EU CE Compliance with: EN 50271 EN 61010-1:2010 ANSI/UL 61010-1 CAN/CSA-C22.2 No. 61010-1
Warranty	12 months (not if sensor is poisoned or overloaded)
Options
LCD display	Two lines, 16 characters each, monochrome
LCD display Open-collector (transistor)	Two lines, 16 characters each, monochrome
output (2)	For horn (resettable) and warning lamp
Switching capacity	24 Vdc / 50 mA (+ switching)
Duct Mounting Set	for sensing gases in duct