![]() If you want precision accuracy, look for gauges that come with sample films or metals for calibration. Generally, the more you pay for a paint thickness gauge, the better its accuracy.īecause environmental conditions can affect accuracy, look for a gauge that can be calibrated for different conditions or one that can tolerate different temperature and humidity levels without compromising accuracy. Though expensive, they are the best for professionals who want a high level of accuracy. Ultrasonic gauges: These are more modern and more accurate than other types of meters.They are the best types of paint thickness gauges for most people. Combined paint thickness gauges: These can measure with magnetic induction or eddy currents depending on the type of surface. ![]() Eddy current gauges: The best choice for measuring thickness of paint on non-magnetic surfaces such as aluminium.Magnetic induction gauges: The best gauges for measuring the thickness of paint on magnetic surfaces.They can only be used on magnetic surfaces. On the downside, they are not as accurate as other types of gauges. They are also easy to carry around, with most being the size of a pen. Permanent magnet gauges: These are affordable, easy to use and don’t require calibration.What To Look For When Buying A Paint Thickness Gauge 1) Type of gauge This is especially important for parts and surfaces that need to be protected from corrosion. Thinning paint can indicate deterioration. Paint thickness gauges can also be used for system and machine maintenance.In industries, manufacturers use these gauges to make sure their products achieve required standards.Inconsistency in paint thickness is an indicator of a repair having been done because of corrosion, an accident or some other issue. You can use a paint thickness gauge when you are inspecting a used car to tell which panels have undergone repairs.If the paint is thin, polishing off too much can expose the lower paint layers. Car detailers use a paint thickness gauge to determine how much paint they have to work with.Here are some of their most common applications as well as their biggest benefits. Uses And Benefits Of A Paint Thickness GaugeĪs I mentioned, paint thickness gauges are used across a wide range of industries. They use the reflected pulse to determine paint thickness. Ultrasonic paint thickness gauges work by sending a pulse through the paint. ![]() These are used on non-metal surfaces such as plastic, wood and fiberglass. There are gauges that don’t rely on magnetism at all. Many paint thickness gauges today have a 2-in-1 design: they can measure via magnetic induction or eddy currents, giving you more versatility. The probe measures the nature and strength of the magnetic fields to determine paint thickness. These eddy currents have their own magnetic fields. By measuring changes in the magnetic field, the gauge can determine paint thickness.Įddy currents are used to measure the thickness of non-conductive coatings on non-magnetic metal surfaces such as aluminium or non-ferrous stainless steel.Ī coil carrying a high frequency alternating current causes eddy currents in the substrate. More advanced paint thickness gauges use either electromagnetic induction or eddy currents.Įlectromagnetic induction is used to measure thickness of non-magnetic coatings on magnetic surfaces such as steel.Ī coil system generates an electromagnetic field that is affected by the magnetic substrate. The gauge gives a readout in μm (micrometre/micron). ![]() This correlates to paint thickness – the more the required force the thicker the paint. A sensor then measures how much force it has taken to pull off the magnet. Increasing tension is applied to a spring connected to the magnet. Once you place the gauge on the surface, a magnet attaches to the surface.įor this type of gauge to work, the surface underneath has to be a ferrous (magnetic) material like steel. Some paint thickness gauges use a permanent magnet to measure paint thickness. ![]() Blue Technology P 11-S-AL Paint Coating Thickness Meter Prodig-Tech GL8s Digital Car Paint Layer Thickness Meter Amgaze Digital Ultrasonic Thickness Meter Tester Digital CEM DT-156 Paint Coating Thickness Meter
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