• Aluminium Oxide Dampness Sensor

    The aluminium oxide (AL2O3) dampness sensor offers correct determination of dew stage, frost level, ppm, or relative humidity in most industrial gases.

    The functioning principle of the aluminum oxide sensor is that its capacitance varies with the moisture concentration. The sensor is capable of the two ppm and dew position measurements in most industrial gasoline streams. The electronics are mounted internally and approach the sign from the sensor and exhibit the readings on the front show panel.

    Aluminium Oxide Dampness Sensor Idea
    An aluminum layer on a ceramic assistance is anodized to sort a slim porous layer of aluminum oxide. The aluminum oxide is then coated with a slim, permeable layer of gold. The gold and the aluminium levels form the sensor electrodes.



    Figure one. Cross-segment of aluminium oxide sensor.

    The gold layer is permeable to dampness and conductive. This varieties the 2nd electrode of a capacitor.


    The pores in the aluminium oxide layer soak up dampness from the fuel stream in quantities straight proportional to the moisture content of the gas stream.

    Determine 2. Shut-up look at of aluminium oxide sensor.

    The absorption of h2o molecules adjustments the capacitance of the sensor. The capacitance of the sensor is measured which is then transformed to the humidity benefit.

    The radius of the pores in the aluminium oxide layer make the sensor particular to water molecules.

    Utilizes of the Aluminium Oxide Sensor
    The aluminium oxide sensor is suitable for use on practically any software exactly where humidity measurements are needed.

    oxygen sensor for humidity analyzers tumble into two locations:
    Gas Producers: for guaranteeing solution quality
    Gas End users: to make certain trustworthiness of inert gas blankets.
    Standard industries necessitating the use of moisture measurement gear are Semiconductor, Metallic Remedy, and Plastics.

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