GD-Transmitter

Gas Detectors

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+49 (0)6171 - 6989-0

GD-Transmitter

The gas detectors of the GD-Transmitter Series can be used in hazardous areas zone 1 and 2. Due to modern sensor technology, based on various measurement principles, the transmitters offers excellent solutions for a wide range of applications.
GD-Transmitter is equipped with a linear 4-20mA signal output and an optional RS-485 interface contributes to an affordable ring-bus installation.
One-man calibration of the transmitters and other comfortable functions for the configuration and monitoring of the sensors functions is possible as well.
In particular, the detectors are suitable for replacing existing systems where wiring expenditure has to be avoided or a connection to common process management systems is necessary.

Features

Measurement of combustibles and toxic gases, or O2
Durable sensors
Linear output signal (4-20 mA), RS-485 (optional)
Multi-purpose applications
Wide temperature range
One-man calibration
ATEX IIC T6 approved

GD-Transmitter is equipped with a linear 4-20mA signal output and an optional RS-485 interface contributes to an affordable ring-bus installation. One-man calibration of the transmitters and other comfortable functions for the configuration and monitoring of the sensors functions is possible as well.

In particular, the detectors are suitable for replacing existing systems where wiring expenditure has to be avoided or a connection to common process management systems is necessary.

Measuring gas	Formula	Lower Explosive Limit (LEL)	Measuring range
Methane	CH4	5,0 Vol %	0 ~ 100% LEL
Ethylene	C2H4	2,7 Vol %	0 ~ 100% LEL
Toluole	C7H8	2,0 Vol %	0 ~ 100% LEL
IPA	C3H8O	1,2 Vol %	0 ~ 100% LEL
Fluorine	F2	-	0 - 10 PPM
Refrigerant (H2-containing)	depends on gas	depends on gas	0 - 1 Vol%
Carbon monoxide	CO	12,5 Vol %	0 - 300 PPM
Carbon dioxide	CO2	-	0-5.000 PPM / 0-5 Vol%
Hydrogen sulphide	H2S	4,3 Vol %	0 - 100 PPM
Ammonia	NH3	3 Vol%	0 - 1000 PPM
Nitrogenmonoxide	NO	-	0 - 100 PPM
Nitrogendioxide	NO2	-	0 - 20 PPM
Silane	SiH4	-	0 - 50 PPM
Sulphidedioxide	SO2	-	0 - 20 PPM
Ethylenoxide	C2H4O	3 Vol %	0 - 100 PPM

Model	GD-T_IR	GD-T_HW	GD-T_HL	GD-T_EC
Measuring gas	Combustible gases, toxic gases (ask for details)			Toxic gases (ask for details), O2
Measuring range	PPM, LEL, Vol%			PPM, Vol%
Detection principle	IR-Absorption	Catalytic combustion	Semiconductor	Electrochemical cell
Response time	20s (T90)	15 to 60s, depending on gas (T90)	30 to 60s, depending on gas (T90)	20 to 60s, depending on gas (T90)
Operation temperature and humidity *	-25°C to +55°C 0% to 95% RH (non-condensing)	-25°C to +55°C 5% to 95% RH (non-condensing)	-20°C to +50°C 10% to 90% RF (non-condensing)	-25°C to +55°C 10% to 90% RF (non-condensing)
Pressure	800 hPa to 1100 hPa		900 hPa to 1100 hPa	900 hPa to 1100 hPa
Enclosure Rating	IP 65 (excepting gas inlet)
Output signal	4-20 mA (linear), RS 485 (optional)
Material	Housing: cast aluminium, lacquered sensor block: high-grade steel
Installation	Wall mounting, installation in pipes with adaptor (optional)
Power supply	24 ± 6 V DC
Max. Load	500 Ω
Cable gland	M 16 x 1,5 (cable ø 4 - 8,5 mm)
Power consumption	80 mA / 2 W			40 mA / 1 W
Protection *	EEx d IIC T4 (-20°C ≤ Tamb ≤ 60°C) *
Measuring function	Designed according to DIN EN 61779-1 with DIN EN 61779-4			Designed according to DIN EN 45544-1 to DIN EN 45544-3 (or EN50104)*
Certifications	0158 II 2G (suitable for zone 1 and 2) 94/9/EG (ATEX), 89/336/EWG (EMV)
EC-Type test	BVS 04 ATEX E 066 X
Dimensions and weight	Approx. 170 x 138 x 100 mm (oxygen detector: ca. 180 x 138 x 100 mm) approx. 2,5 kg

* depends on gas, please request details; specifications subject to change without notice.