Thickness Gauge Principle Different Thickness Gauges Introduction

This type of meter has a radioactive thickness meter that utilizes the transmission characteristics of α-rays, β-rays, and γ-rays; an ultrasonic thickness meter that utilizes changes in the ultrasonic frequency; an eddy current thickness meter that uses the eddy current principle; and a mechanical contact-type measurement principle. Thickness gauges and so on. Today we mainly introduce laser thickness gauges and X-ray thickness gauges. And explain the principle of thickness gauge for everyone.
[The difference between laser thickness gauge and X-ray thickness gauge]

Laser thickness gauge is generally composed of two laser displacement sensors up and down the way to shoot, the upper and lower sensors measure the position of the upper surface of the measured body and the position of the lower surface, through the calculation to obtain the measured body thickness. The advantage of the laser thickness gauge is that it uses a non-contact measurement, which is more accurate than a contact thickness gauge and does not lose accuracy due to wear. Relatively high accuracy of ultrasonic thickness gauges. Relative X-ray thickness gauges have no radiation contamination.
【The principle of thickness gauge】
Paper Thickness Gauge: It is suitable for measuring the thickness of various thin sheet materials below 4mm.
Ultrasonic Thickness Gauge: Ultrasonic Thickness Gauge consists of a host and a probe. Host circuit includes transmitter circuit, receiver circuit and count display circuit. The high-voltage shock wave generated by the transmitter circuit excites the probe to generate ultrasonic pulse wave. The pulse wave is received by the receiver circuit after being reflected by the dielectric interface. After being counted and processed by the single chip microcomputer, the pulse wave The liquid crystal display shows the thickness value, which is mainly based on the propagation speed of the sound wave in the sample multiplied by half the time passed through the sample to obtain the thickness of the sample. The HT series super-gage thickness gage that our factory manages, on the basis of adopting domestic and foreign advanced technology, uses the low-power and low-limit pocket type smart measuring instrument developed by the single-chip microcomputer technology, not only measuring the thickness of different materials, And there is a single steel, ultra-thin, and at the same time can be equipped with high-temperature thickness probe.

Laser Thickness Gauge: It is a non-contact thickness gauge. The laser of two laser displacement sensors shoots at the same time. The principle of the LPM30C laser thickness measurement of the measured object placed in the radiation region is based on the measurement of the upper and lower surfaces of the measured object. The distance to calculate the thickness of the measured body. The basic composition of the laser thickness gauge is a laser, an imaging objective lens, an optical potential sensitive receiver, a signal processor measurement result display system. The laser beam forms a bright spot on the surface of the object to be measured, and the imaging objective image this spot onto the photosensitive of the photosensitive receiver to generate an electrical signal that detects the position of the spot on the sensitive surface. When the object to be measured moves, the position of the light spot on the surface relative to the imaging objective lens changes, and accordingly, the position of the imaging point on the photosensitive device also changes. The laser thickness gauge can directly connect the output signal to an industrial computer, quickly process data and output deviation values. Laser thickness gauge is a laser detection technology and protective measures, suitable for measuring the thickness of objects with higher temperature requirements. The detection system has the advantages of low cost, no radiation, and easy maintenance.

Xiaobian epilogue: The above introduced the principle of the thickness gauge and hopes to help everyone. For more relevant knowledge, please continue to pay attention to this website information platform. Follow-up will present more exciting content for everyone.

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