Coating thickness gauge measurement by a magnetic sensor

Publish Time: 2019-06-26 Origin: Site

The ultrasonic thickness measurement gauge uses a magnetic sensor to measure non-ferromagnetic coatings and coatings on ferromagnetic metal substrates such as steel, iron, etc., such as: paint, powder, plastic, rubber, synthetic materials, phosphating layer, chromium, zinc, lead , aluminum, tin, cadmium, porcelain, antimony, oxide layer, etc.The eddy current sensor is used to measure tantalum, rubber, paint, plastic layers, coating thickness gauges measure with a magnetic sensor.

The coating thickness gauge uses a magnetic sensor to measure non-ferromagnetic coatings and coatings on ferromagnetic metal substrates such as steel, iron, etc., such as: paint, powder, plastic, rubber, synthetic materials, phosphating layer, chromium, zinc, lead , aluminum, tin, cadmium, porcelain, antimony, oxide layer, etc. The eddy current sensor is used to measure tantalum, rubber, paint, plastic layers on substrates such as copper, aluminum, zinc, and tin. Bluetooth ultrasonic thickness gauge is widely used in manufacturing, metal processing, chemical industry, commodity inspection and other testing areas.

Principle of magnetic attraction measurement:

The amount of suction between the magnet (probe) and the magnetically permeable steel ultrasonic thickness measurement equipment is proportional to the distance between the two, which is the thickness of the coating. Using this principle to make a thickness gauge, measurement can be performed as long as the difference in magnetic permeability between the cladding and the substrate is sufficiently large. Since most industrial products are formed by structural steel and hot-rolled cold-rolled steel sheets, magnetic thickness gauges are widely used. The basic structure of the thickness gauge consists of magnetic steel, relay spring, scale and self-stop mechanism. After the magnetic steel is attracted to the object to be tested, the measuring spring is gradually elongated and the pulling force is gradually increased. When the pulling force is just greater than the suction force, the thickness of the coating layer can be obtained by recording the pull-down force at the moment of the magnetic steel detachment. The new product automates this recording process. Different models have different ranges and applications.

The instrument is characterized by simple operation, ruggedness, no power supply, no calibration before measurement, and low price, which is very suitable for quality control in the workshop.

Coating thickness gauge measurement by a magnetic sensor

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