14 TX9165-UM-EN-07
1.7.1 Sentro eModules
For the full range of Sentro eModules refer to the Sentro 8 Product Data Sheet
TX9165-DS-EN or contact the Trolex Sales Team: sales@trolex.com
1.7.1.1 Flammable Gases • Poison Resistant Catalytic Sensor
The sensor will respond to most flammable gases and vapours
to varying degrees; it is normally calibrated to methane in
terms of %LEL or %volume.
TX6350 .240 .246
.244
Methane
CH
4
Methane
CH
4
Methane
CH
4
Sensing element
Poison resistant pellistor with active temperature/humidity
compensation
Sensing range
0 to 100% LEL 0 to 4% v/v 0 to 5% v/v
Linearity Linear to 3% v/v and 3% to 5% ±0.25% v/v
Max. Drift @ 25°C ±0.25% CH
4
v/v per month
Response time (T63) <15 secs
Response time (T90) <20 secs
Sensing element life >5 years in clean atmosphere
Warm up time <5 mins in air or 1% v/v CH
4
(to 95% of stated accuracy)
GENERAL alarm 10% LEL (0.44% v/v)
HIGH alarm 20% LEL (0.88% v/v)
Checkpoint
The pellistor is automatically protected against exposure to excessively high
concentrations of gas.
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