Sensor Technologies: smarter Transmitters
Catalytic LEL Sensors
Catalytic bead combustible gas sensors basically consist of hot filaments (active
and reference elements) enclosed behind a sintered stainless steel flame arrestor.
The active element is treated with a catalyst to effectively burn or oxidize
the gas while the reference element is nonreactive and provides compensation
for ambient conditions; temperature and humidity. The two elements are configured
in a Wheatstone bridge whereby exposure to combustible gas imbalances the bridge
and generates an electrical output directly related to gas concentration. The
catalytic gas sensor is not selective and detects numerous combustible gases
and vapors. The Mil-Ram catalytic sensor achieves exceptional zero
by providing excellent gas response at comparatively low operating temperatures.
The lower operating temperature provides for long term stability and extended
Model TA-2100 Catalytic Combustible Gas Detectors
Methane, Propane, Hydrogen, Butane....