LCTR 903LCTR 903低成本气体传送器

添加时间：2010-6-5 12:04:45 担当：未知阅读：次

产品名称：LCTR 903LCTR 903低成本气体传送器
定货号：YD-02271-00

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The gas transmitter ADOS LCTR 903 is suitable for the
detection of combustible gases, for example hydrogen,
methane (natural gas) or propane / butane (LPG) in air
in the LEL region.
Two transmitter versions with different output signals are available:
- 3-wire 4–20 mA
- 4-wire LON® (LCTR 904)

Three measuring principles are available:
- VQ
- TGS
- IR

Type	TGS	VQ	IR
Measurement method	Semiconductor	Heat reduction	Infrared
Measurement range	ppm ranges to 100 % LEL	ppm ranges to 100 % LEL	0–100 % LEL CH4, C3H8, C2H2 0–100 Vol % CH4 0–1, 2, 3, 4, 5 Vol % CO2
Percentage error of f.s.d.	± 5 %	± 5 %	± 3 %
Linearity	< 15 % of f.s.d.	< 3 % of f.s.d.
Temperature range	+4 °F to +113 °F	+4 °F to +113 °F	+4 °F to +113 °F
Temperature effect	5 %	2 %	8 %
Response time (t90)	approx. 20 sec.	approx. 20 sec.	< 30 sec.
Pressure effect	1 %	1 %	1 %
Mounting position	optional	optional	optional
Application	Poisonous, combustible and explosive gases in the LEL region	Poisonous, combustible and explosive gases in the LEL region	Poisonous, combustible and explosive gases in the LEL region
Expected operation time for sensor	> 2 years	> 2 years	± 5 years
Supply voltage	15V - 30V	15V - 30V	15V - 30V
Interface	4–20 mA three-wire	4–20 mA three-wire	three-wire, 4–20 mA or LON® four-wire techniques, galvanically isolated, data transmission 78 kbps
Protection	II 2 G	II 2 G	II 2 G
Ex version	Ex demb [ia] IIC T6 KEMA 03 ATEX 2403 X	Ex demb [ia] IIC T6 KEMA 03 ATEX 2403 X	Ex demb [ia] IIC T6 KEMA 03 ATEX 2403 X
Protection class	IP 54	IP 54	IP 54
Dimensions (height x diameter)	3.15 x 3.15 inch	3.15 x 3.15 inch	3.15 x 3.15 inch
Weight	1.1 lbs	1.1 lbs	1.1 lbs