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Gas transmitter - ADOS GTR 196

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

Technical data

TypeTGSVQIR
Measurement method:SemiconductorHeat reductionInfrared
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.< 3 % of f.s.d.
Temperature range:-20 °C to +45 °C-20 °C to +45 °C-20 °C to +45 °C
Temperature effect:5 %2 %8 %
Response time (t90):approx. 20 sec.approx. 20 sec.< 30 sec.
Pressure effect:1 %1 %1 %
Mounting position:optionaloptionaloptional
Application:Poisonous, combustible and explosive gases in the LEL regionPoisonous, combustible and explosive gases in the LEL regionPoisonous, combustible and explosive gases in the LEL region
Expected operation time for sensor:> 2 years> 2 yearsapprox. 5 years
Supply voltage:15V - 30V15V - 30V15V - 30V
Interface:

4–20 mA three-wire or

LON? fourwire techniques

(LCTR 404), galvanically

isolated, data transmission 78 kbps

4–20 mA three-wire or

LON? fourwire techniques

(LCTR 404), galvanically

isolated, data transmission 78 kbps

4–20 mA three-wire or

LON? fourwire techniques

(LCTR 404), galvanically

isolated, data transmission 78 kbps

Protection class:IP 30IP 30IP 30

Dimensions 

(height x diameter):

80 x 80 mm80 x 80 mm80 x 80 mm
Weight:500 g500 g500 g


  • Gas fired boiler systems

  • Gas distribution station

  • Gas transfer station

  • Battery charging station

Gas transmitter
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