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COATING THICKNESS GAUGES

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Coating Thickness Gauges

Measure a nonmagnetic coating thickness on magnetic or non-magnetic substrates,
Simplicity in coating thickness measurement!
Most instruments are backed with a 5 Year Warranty and Free Lifetime Technical Support.

The PHASE II PTG-3500 coating thickness gauge can perform two different methods of calculating thickness measurement by utilizing the characteristics of both eddy current and magnetic induction.
Phase II PTG-3550 Integrated Coating Thickness Gauge

Phase II PTG-3550 Integrated Coating Thickness Gauge

Testing performance is both non-destructive and extremely accurate.

With this state of the art thickness gauge, you can easily detect the thickness of nonmagnetic coating on a magnetic substrate (ferrous) or an insulating coating on a non-magnetic conductive substrate (non-ferrous) utilizing either an integrated probe or our version that comes with 1 auto-detect external probe.

The PHASE II PTG-3500 can be used in many areas of industry including manufacturing, general engineering, commercial inspection, etc.

Main Technical Data
• Measuring range: 0-1000 µ m max. or 0-40 mils
• Resolution: 0.1µ m / 0.01mils(0-99µ m) or 1µ m (over 100µ m)
• Guaranteed tolerance:
After one-point calibration: +/- 1-3%n or 2µ m (whichever is greater)
• Display: 4 digits (digit height = 10mm/0.4”)
• Min. measuring area: 0.2” x 0.2” (5mm x 5mm)
• Min. radius of curvature: Convex: 0.12” (3mm)
Concave: 1.2” (30mm)
• Min. substrate thickness: Ferrous: 20 mils (0.5mm)
Non-ferrous: 2 mils (50 µ m)
• Calibration: Zero Calibration
Foil calibration
• Max. Surface temperature of test object: 302 degrees F (contact time max is 2 seconds)
• Power source: 4 AA batteries
• Dimensions: 161 x 69 x 32mm
• Weight: 9oz. (260g)

Model No. PTG-3550 Price: $464.06USD

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Non-Destructive Coating Thickness Measuring Principles

1) Magnetic Induction Principle:
The Phase II PTG series of Coating Thickness Gauges utilize this non-destructive principle when measuring coatings on ferro-magnetic substrates such as Steel and Iron. The coatings must be non-magnetic such as; paint, enamel, aluminum, chrome, copper and brass.

2) Eddy-Current Principle:
The Phase II PTG series of Coating Thickness Gauges utilize this non-destructive principle when measuring coatings on non-magnetic substrates such as; Aluminum, Aluminum Alloys, bronze, copper, brass tin and rustproof weak magnetic steels. The coatings must be electrically insulating such as; paint, enamel, plastics, anodized coatings and ceramics.

Calibration Procedures
NOTE: All PTG series Coating Thickness Gauges are inspected and calibrated using the Two-Point Calibration procedure prior to shipment.

1) One-Point Calibration:
This procedure is accomplished by “Zeroing” the gauge on an uncoated version of the sample that you will be checking the coating thickness on. To accomplish this calibration, you will need to follow the simple calibration procedure that is explained in the operation manual. Although this is an accurate method for calibration, it is not as accurate as using the two point calibration.

2) Two-Point Calibration:
This procedure is accomplished by “zeroing” the gauge on one of the supplied substrate samples (steel/aluminum) and then placing one of the calibrated “foils” on that substrate and calibrating the gauge to match the known thickness of the foils. It is best to use the foil that is closest to the actual known thickness of your own samples to be tested. This is a very simple procedure that is explained in the operation manual. By using the two-point calibration procedure, you are making sure that the gauge will be at its most accurate when testing your own coated samples. This is the same method used to calibrate every gauge prior to shipment.

3) Frequency of Calibration:
Once the PTG series of Coating Thickness Gauge have been calibrated, the parameters are saved in the memory and the calibration procedure does not need to be repeated. We do recommed that after numerous hours of operation or if the gauge has not been used for a few days you should check the accuracy using the same calibrated substrate/foil combination previously used to calibrate the gauge.

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