Thickness gauge - measurement of coating thickness
Thickness gauge - a device designed to measure the thickness of various coatings, mainly car paint, plastic, various metals, varnishes, etc.
Measuring paint thickness
The most popular area of application of the thickness gauge is, of course, the automotive market. Here, this device is used as an aid in buying a car by ordinary motorists, when evaluating a car by insurers, as well as by professionals who are engaged in all types of redecorating a car, from painting, straightening, to polishing a car.
We measure the thickness of the car paintwork
Here the purpose of the device is one - measure paint thickness in this part of the car, and according to these data, it is already possible to conclude whether any body work has been done with this part or not: whether there is a layer of putty on it, whether there was tinting, etc. From these data, you can easily determine whether the car was involved in accidents, how serious the damage was and how this could affect the geometry of the body. The geometry of the body is a very important parameter, since it directly affects your safety, as well as the functioning of technical units, for example, if the geometry is broken, you may experience severe uneven wear of rubber, which will lead to premature tire replacement. Therefore, the thickness gauge is an indispensable assistant in choosing a supported car.
The second, less popular area of application for this device is construction. With the help of a thickness gauge, the thickness of metal coatings, which include anti-corrosion and fire protection treatment, is determined here.
Types of thickness gauges by device type
Let's consider only the most common types of thickness gauges:
- Ultrasonic. Ultrasonic thickness gauges are characterized by the presence of a special sensor that sends a signal, usually through a non-metallic surface, which is reflected from the metal and then processed by the same sensor and determines the thickness of the coating to the metal. It is these sensors that are very convenient when only one side of the surface is available for measurement.
Coating thickness gauge
- Magnetic. The measurement is based on the electromagnetic method. The device has a magnet and a specialized scale. After the device is brought up to the surface to be measured, the device measures the force of attraction of the magnet to the metal base underneath, for example, a paintwork (which does not in any way affect the electromagnetic interaction).
Automotive thickness gauges measure at a speed of 1 measurement per second, have an accuracy of + -8-10 microns (microns). Capable of measuring thickness up to 2000 microns. Battery powered. Some models are powered by 4 AAA batteries, others are powered by one 9V battery (crown).
