for the detection of Ammonia - TGS 2444




* Low power consumption
* High sensitivity/selectivity to ammonia(NH 3 )
* Miniature size

  • Model Number: TGS 2444
  • Data Sheet: Date Sheet File
Quantity:
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  •  for the detection of Ammonia
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Product Specification

Features:

* Low power consumption
* High sensitivity/selectivity to ammonia(NH 3 )
* Miniature size


Applications:

* Ammonia leak detection in refrigerators
* Ventilation control for agricultural and poultry industries


TGS 2444 utilizes a multilayer sensor structure. A glass layer for thermal insulation
is printed between a ruthenium oxide (RuO 2) heater and an alumina substrate. A pair
of Au electrodes for the heater are formed on a thermal insulator. The gas sensing
layer, which is formed of tin dioxide (SnO 2 ), is printed on an electrical insulation layer
which covers the heater. A pair of Au electrodes for measuring sensor resistance
are formed on the electrical insulator.
TGS 2444 displays good selectivity to ammonia, making it ideal for critical safety-related
applications such as the detection of ammonia leaks in refrigeration systems and
ammonia detection in the agricultural field. In the presence of ammonia, the sensor's
conductivity increases depending on the gas concentration in the air. A simple pulsed
electrical circuit operating on a 250msec circuit voltage cycle can convert the change
in conductivity to an output signal which corresponds to gas concentration.


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