Semicon-Detector For Hydrogen

Semicon-Detectorfor Hydrogen

The Semicon-Detector is a reliable measuring instrument to readconcentrations of Hydrogen in the lower ppm-range up to Vol.%-range.The measuring system is based on changes in the conductivity of theheated sensor elements when exposed to gases.
The two sensor elements of the Semicon-Detector are a semiconductor gassensor on SnO₂-basisand a heat conductance sensor, which complement each other in a diversegas measuring device of the highest sensitivity, selectivity, stabilityand safety. The detector module has integral safety related functions.Errors will be signaled during the measuring procedure.

Performancedata
Measuring range:	0 - 4,0 Vol% H2 (optional up to100 Vol% H2)
Proof limit:	1 ppm H2
Cross-sensitivityat 23 ?C, 45 % relative humidity:
	on impact of	Display
	5,0 Vol% CH4	5 ppm H2
	2,1 Vol% C3H8	0 ppm H2
	3,5 Vol% C2H5OH	5 ppm H2
	4,0 Vol% CO2	0 ppm H2
Humidity-cross-sensitivityfrom 23 ?C, 25 % relative humidity to:
	23 ?C, 85 % relative humidity	5 ppm H2
	23 ?C, 100 % relative humidity(condensation)	80 ppm H2
Relativemeasuring error at >0 up to 1,0 Vol% H2(23 ?C, 45 % relative humidity):	-25 % up to +25 %
Relativemeasuring error at >1,0 up to 4,0 Vol% H2(23 ?C, 45 % relative humidity):	-10 % up to +10 %
Operatingdata
Supply voltage:	7,5 V  up to 12,0 V DC
Power consumption:	1,5 VA
Interface:
	analogue:	0 up to 10 V
	analogue:	4 up to 20 mA
	digital:	RS 232
Permissibleoperating temperature:
	Sensor head:	-10 ?C up to +40 ?C
	Module:	-10 ?C up to +40 ?C
Dimensionsand weight
	Sensor head (?xL):	30 mm x 35 mm
	Module (LxWxH):	54 mm x 100 mm x 40 mm
Sensor leads:	none
Power supply:	plug power pack
Total weight:	180 g
Permissibletemperature (storage):
	Sensor head:	-20 ?C up to +50 ?C
	Module:	-20 ?C up to +50 ?C