Sensor Technologies: smarter Transmitters
Metal Oxide Semiconductor (MOS) Sensors
Solid-State MOS (Metal Oxide Semiconductor) sensors utilize thick or thin film
metal oxides deposited on a ceramic substrate that is maintained at constant
temperature using an integral heater element. When the metal oxide film is
exposed to gas, molecules are adsorbed along the surface which alters the electrical
resistance. The operating temperature ensures optimum response characteristics
for the specific type of gas over the designated detection range. The change
in electrical resistance is converted into meter indication for read-out of
gas concentration. The MOS detector is optimized for a particular compound
(family of compounds), but is less specific than other methods related to the
broader range of compounds that can be adsorbed on the sensor surface.
Model TA-2100 Fixed Solid-State Gas Detectors
Ammonia, Hydrogen Sulfide, Chloroform, Methylene Chloride....