Coating Thickness Gauge Selection and FAQ

Time:2019/08/22 20:35:00 Browse:1803

Coating or painting thickness gauges are used for measuring the paint thickness of surface coating. It is an important painting film and quality inspection tool when anodizing, galvanizing and applying zinc coating to metallic surfaces.

Magnetic thickness gauge can be used for measuring the non-magnetic paint, coating, insulating layer and dry film thickness (DFT) non-destructively on ferrous metal substrate such as iron and steel.

Eddy current thickness gauge is used to measure the non-conductive coating thickness on non-ferrous metal substrates such as copper and aluminum.

Automotive paint meters can be used to measure the car paint thickness and uniformity, revealing repainted spots, identifying hidden damages and exposing undisclosed accidents. This function is very helpful when determining the actual value of the car. To measure the car paint thickness, a magnetic thickness gauge or an eddy current thickness gauge is not enough, due to that the substrates of the car paint thickness have both ferrous and non-ferrous metal.

So a dual use coating thickness gauge plays its role, to choose the best dual use coating thickness gauge, you can refer to the coating thickness gauges listed below. 

I. Coating Thickness Gauge Selection and Price

Model LS220H LS221 LS223 LS225+F500 LS225+N1500
Appearance coating thickness meter coating thickness tester coating thickness gauge magnetic plating thickness tester eddy current plating thickness tester
Measurement
range
0-2000μm Fe: 0-5000μm
NFe: 0-3000μm
0-500μm 0-1500μm
Probe Integratal Extenal Pen-shaped
Feature Small size Used in
narrow spaces
Suitable for testing
thick coatings
Plating thickness
measurement
on ferrous metal
Plating thickness
measurement
on non-ferrous metal
Resolution 0.1μm: (0μm - 99.9μm)
1μm: (100μm – 999μm)
0.01mm: (1.00mm - 2.00mm)
0.1μm: (0μm - 99.9μm)
1μm: (100μm – 999μm)
0.01mm: (1.00mm - 5.00mm)
0.1μm: (0μm - 99.9μm)
1μm: (100μm - 500μm)
0.1μm: (0μm - 99.9μm)
1μm: (100μm - 999μm)
0.01mm:
(1.00mm – 1.5mm)
Accuracy ≤±(3%reading+2μm) 0 -3000μm:
≤±(3%reading+2μm)
3000μm -5000μm:
≤±(5%reading+2μm)
≤±(2%reading+0.3μm)
after 5 points
calibration
≤±(2%reading+0.3μm)
after 5 points
calibration
Principle Fe: Hall Effect / NFe: Eddy current Magnetic induction Eddy current
Measurement
interval
0.5s 1.5s 1.5s

II. Best coating thickness gauges

1. LS220H Dry Film Thickness Gauge (Integrated probe)

LS220H dry film thickness gauge is more suitable for measuring the dry film and coating thickness on all kinds of ferrous or non-ferrous metal substrates such as copper, steel, iron or aluminum. 

● Highly sensitive probe, measuring one data within 0.5S
● Digital probe, keep the zero position stable for a long time without drifting
● High accuracy and good repeatability
● For both iron and aluminum,automatically switched on magnetic and non-magnetic substrates
Model: LS220H

2. LS221 Coating Thickness Gauge (External probe)

The LS221 coating thickness gauge is more suitable for measuring the coating and powder thickness on all kinds of ferrous or non-ferrous metal substrates such as copper, steel, iron or aluminum. With 0.5s ultra-short measuring internal and small size, it's very compact and easy to carry. 

● Measuring range:0.0-2000μm
● Fast measurement, 0.5s measuring interval
● No calibration, just zero adjustment
●With cable probe,suitable for testing narrow space
Model: LS221

3. LS223 Coating Thickness Gauge with (External Probe)

The LS223 coating thickness gauge supports automatic turn on when the probe contacts the test object and manual turn on by pressing the button, with 0.5s ultra-short measuring internal and small size, it's very compact and easy to carry. 

● Measuring range: Fe:0.0-5000μm,NFe:0.0-3000μm
● Fast measurement, 0.5s measuring interval
● No calibration, just zero adjustment.
● With temperature compensation function and digitalizing analog signal function,can provide an excellent measuring accuracy
Model: LS223

4. Plating Thickness Gauge (External Probe)

● Test coating thickness on non-ferrous substrate
● High measurement accuracy and repeatability
● Test ultra-thin coating thickness below 10μm
● Optional test fixture to ensure accuracy
Model: LS225+N1500
● Test coating thickness on ferrous substrate
● Test ultra-thin coating thickness below 10μm
● High measurement accuracy and repeatability
● Optional test fixture to ensure accuracy

III. Linshang Coating Thickness Gauge FAQ

  1. 1. How long is the product guarantee?

    Linshang coating thickness gauge can be returned to the factory without any reason in 90days (No human damage and can be used for second sales).The supplier provide one year warranty and lifetime maintenance after-sales service.

  2. 2. What materials can be tested with Linshang coating thickness gauge?

    The Linshang coating thickness gauge uses both the Hall Effect and the eddy current principle. It is an iron-aluminum dual-use instrument that automatically recognizes the substrate and switches between iron-based and non-ferrous-based measurement modes.

    • It is suitable for measuring the thickness of non-magnetic coating ( paint, varnish, enamel, galvanized) on magnetic metal substrates such as steel, iron, etc.,

    • It is also suitable for measuring non-conductive coatings (coatings, anodized layers) on non-magnetic metal substrates such as copper,aluminum,die-cast zinc,etc. 

  3. 3. What are the similarities and differences between LS220H and LS221?

    • The same point:the measurement parameters of LS220H and LS221 are the same.The two meters can be used both for ferrous and non-ferrous substrates,the range is 0-2000 microns.

    • Difference:The LS220H is an integrated type that can be operated with one hand.The LS221 is a split-type instrument that is more suitable for measurements in narrow spaces and higher or lower positions,making reading and operation more convenient.

  4. 4. What are the similarities and differences between LS221 and LS223?

    The same point: the probes of the LS221 and LS223 coating thickness gauges are connected to the main unit through an external line, which can measure some small spaces and higher or lower positions. The reading is more convenient.

    Difference: The LS223 also supports automatic trigger boot during the test. The LS221 coating thickness gauge does not have this function. 

  5. 5. Do I need to calibrate the instrument before I use it?

    No, Linshang coating thickness gauge does not require calibration and can be used only by making zero adjustment.

  6. 6. In what conditions do we need to make zero adjustment?

    Several situations in which zero adjustment is recommended before testing:

    • Tested material substrate has been changed

    • The instrument has not been used for a long time

    • When the ambient temperature changes greatly

    • The instrument has been replaced with a battery

  7. 7. Does Linshang coating thickness gauge provide a measurement certificate?

    The Linshang coating thickness gauge can ensure the inspection by the authoritative metrology institute. If you need a metrology certificate, you can send it to a third-party authoritative metrology institute for inspection. Our company also provides the inspection service on behalf of the company. After the completion of the inspection, the metrology institute will inform you of the payment.

If you have questions regarding the specific application of coating thickness gauge, our technical support staff at Linshang Technology will assist you in selecting the right painting thickness gauge. Contact sales21@linshangtech.com or WhatsApp +86 13510633052. 

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