The LS221 Coating Thickness Gauge is a specialist instrument for measuring the thickness of coatings on metal surfaces. The instrument combines the Hall effect and Eddy current principles to measure the thickness of non-ferromagnetic coatings on ferromagnetic metal substrates and the thickness of non-conductive coatings on non-magnetic metal substrates. The host and probe of LS221 is separate, which makes it easy for the user to view the data under complex testing conditions. It can be used in the laboratory and engineering field.
Hall Effect: can be used for the measurement of non-ferromagnetic coatings on ferromagnetic metal substrates.
Eddy current: can be used for the measurement of non-conductive coatings on non-magnetic metal substrates.
There are only four types of ferromagnetic metal elements at room temperature: iron, cobalt, nickel, and gadolinium.
Common non-ferromagnetic metals: copper, aluminum, zinc, chromium, etc.
|Hall Effect||Ferromagnetic materials:
|Non-ferromagnetic metal||1. Galvanized iron
2. Iron copper plating
|Non-metal materials||1. Iron spray paint
2. Iron spray powder coating
Iron, cobalt, nickel and gadolinium
|Iron nickel plating||×|
|Eddy current||Non-ferromagnetic metal:
|Non-conductive material||1. Anodized aluminum surface
2. Copper spray paint
The introduction of LS221 Coating Thickness Gauge
LS221 Coating Thickness Gauge is widely used in metal processing, coating, hardware, shipbuilding, aerospace and other fields.
|Parameter||LS221 Coating Thickness Gauge|
|Probe tip||Ruby fixed|
|Measuring principle||Ferrous: Hall Effect / Non-Ferrous : Eddy current|
|Probe type||External cable probe|
|Resolution||0.1μm: 0μm -99.9μm
|Accuracy||≤±(3%H+2μm), H is the standard value|
|Unit||μm / mil|
|Minimum measuring area||Ø = 25mm|
|Minimum curvature||Convex:5mm / Concave:25mm|
|Minimum substrate thickness||Fe:0.2mm / NFe:0.05mm|
|Display||128×48 dot matrix LCD|
|Power supply||2pcs of 1.5V AAA alkaline battery|
|Operation temperature range||0℃-50℃|
|Storage temperature range||-20℃-60℃|
|Host size||101*62*28 mm|
|Probe size||71*26*22 mm|
|Weight (with battery)||114 g|
Advanced digital probe technology
LS221 Coating Thickness Gauge adopts advanced digital probe technology to keep the zero position stable without drift and frequent zero adjustment which solves the linearity of the instrument and ensures measurement accuracy
Iron and aluminum dual use, Identify substrate automatically
The LS221 coating thickness gauge adopt two measurement principles and can identify the substrate automatically. Measurement can be completed in 0.5 seconds
Three measurement modes available
The LS221 coating thickness gauge has three measurement modes:Fe mode, NFe mode and Fe/NFe mode
Portable and Convenient
The LS221 dry film thickness gauge has simple design and small size. It is easy to carry and operate
High sensitivity probe, High response speed
The LS221 digital paint thickness gauge has high sensitivity probe, the test response speed is very high and the data can be measured in 0.5 seconds
Wear-proof ruby probe tip for long-term use with strong corrosion and abrasion resistance
Qualifications and Standards
LS221 coating thickness gauge conforms to the following standards：
GB/T 4956-2003 Non-magnetic Coatings on Magnetic Substrates-Measurement of Coating Thickness-Magnetic Method
GB/T 4957-2003 Non-conductive Coatings on Non-magnetic Basis Metals-Measurement of Coating Thickness-Eddy Current
DIN EN ISO 2808 Paints and Varnishes-Determination of Film Thickness
JJG-818-2005 Verification Regulation of Magnetic and Eddy Current Measuring Instrument for Coating Thickness
|1||LS221 coating thickness gauge||1||Set|
|2||Fe plate of zero adjustment||1||Pcs|
|3||NFe plate of zero adjustment||1||Pcs|
|7||1.5V AAA alkaline battery||2||Pcs|
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1. The difference between LS220H and LS221
The functions and parameters of LS220H and LS221 are exactly the same, but the LS220H coating thickness gauge adopts an integrated design and can be operated with one hand; while the LS221 adopts a split design, the probe size is smaller, which is suitable for measuring narrow spaces and some special positions.
If you want to know more about the Linshang coating thickness gauge, Please click “Coating Thickness Gauge Selection and FAQ”.