Aluminium Oxide Dampness Sensor

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

The functioning principle of the aluminum oxide sensor is that its capacitance differs with the humidity concentration. The sensor is able of equally ppm and dew point measurements in most industrial gasoline streams. The electronics are mounted internally and procedure the sign from the sensor and exhibit the readings on the front screen panel.

Aluminium Oxide Humidity Sensor Principle

An aluminum layer on a ceramic support is anodized to form a thin porous layer of aluminum oxide. The aluminum oxide is then coated with a slender, permeable layer of gold. The gold and the aluminium levels kind the sensor electrodes.

Determine one. Cross-section of aluminium oxide sensor.

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

The pores in the aluminium oxide layer soak up dampness from the gasoline stream in amounts straight proportional to the moisture articles of the fuel stream.

Determine two. Close-up check out of aluminium oxide sensor.

The absorption of water molecules modifications the capacitance of the sensor. The capacitance of the sensor is measured which is then converted to the dampness benefit.

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

Uses of the Aluminium Oxide Sensor

The aluminium oxide sensor is suitable for use on practically any software in which moisture measurements are essential.

Industrial applications for moisture analyzers slide into two areas:

Fuel Producers: for ensuring merchandise good quality

Gas Consumers: to make certain trustworthiness of inert gasoline blankets.

oxygen sensor necessitating the use of moisture measurement equipment are Semiconductor, Steel Remedy, and Plastics.