Aluminium Oxide Dampness Sensor

The aluminium oxide (AL2O3) moisture sensor supplies accurate willpower of dew level, frost stage, ppm, or relative humidity in most industrial gases.

The functioning theory of the aluminum oxide sensor is that its capacitance differs with the dampness focus. The sensor is capable of each ppm and dew point measurements in most industrial gasoline streams. The electronics are mounted internally and process the signal from the sensor and show the readings on the front show panel.

Aluminium Oxide Moisture Sensor Principle

An aluminum layer on a ceramic support is anodized to type a slim porous layer of aluminum oxide. The aluminum oxide is then coated with a skinny, permeable layer of gold. The gold and the aluminium layers sort the sensor electrodes.

Determine one. Cross-part of aluminium oxide sensor.

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

The pores in the aluminium oxide layer take up moisture from the gas stream in quantities right proportional to the moisture articles of the gas stream.

Figure 2. Shut-up view of aluminium oxide sensor.

The absorption of h2o molecules adjustments the capacitance of the sensor. Trace Dew-Point Transmitters of the sensor is measured which is then transformed to the moisture benefit.

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

Makes use of of the Aluminium Oxide Sensor

The aluminium oxide sensor is appropriate for use on virtually any software where dampness measurements are necessary.

Industrial apps for moisture analyzers drop into two regions:

Gasoline Producers: for guaranteeing product good quality

Gas Consumers: to make certain reliability of inert gas blankets.

Normal industries requiring the use of dampness measurement tools are Semiconductor, Metallic Treatment, and Plastics.