86221 Coating Thickness Gauge
Measurement Range: 0.0–2000μm
High Accuracy | Stable Performance
Compatible with Ferrous and Non-Ferrous Substrates
Split-Type Design for Use in Confined Spaces
The 86221 Coating Thickness Gauge is a precision instrument designed for measuring coating thickness on metal surfaces. It utilizes both Hall Effect and Eddy Current principles to accurately measure non-ferromagnetic coatings on ferromagnetic metals, as well as non-conductive coatings on non-magnetic metal substrates.
Thanks to its split-type design, where the main unit and probe are separate, the device is especially practical in complex or hard-to-reach environments. It’s suitable for use in both laboratory and field applications.
Hall Effect: Measures non-ferromagnetic coatings on ferromagnetic substrates.
Eddy Current: Measures non-conductive coatings on non-magnetic metal substrates.
Ferromagnetic metals at room temperature: Iron, cobalt, nickel, and gadolinium.
Common non-ferromagnetic metals: Copper, aluminum, zinc, chromium, and more.
| Measuring Principles |
Substrate | Coating | Examples | Yes/No |
|---|---|---|---|---|
| Hall Effect | Ferromagnetic materials: Iron, cobalt, nickel, gadolinium |
Non-ferromagnetic metal | 1. Galvanized iron 2. Iron copper plating |
√ |
| Non-metal materials | 1. Iron spray paint 2. Iron spray powder coating |
√ | ||
| Ferromagnetic material: Iron, cobalt, nickel and gadolinium |
Iron nickel plating | × | ||
| Eddy Current | Non-ferromagnetic metal: Copper, aluminum, zinc, etc. |
Non-conductive material | 1. Anodized aluminum surface 2. Copper spray paint |
√ |
Application
The 86221 Coating Thickness Gauge is widely used in metal manufacturing, coatings inspection, hardware production, shipbuilding, aerospace, and related industries.
86221 Coating Thickness Gauge tests the coating on fire extinguisher
86221 Coating Thickness Gauge tests the coating on ferrous material
86221 Coating Thickness Gauge tests the coating on aluminum window sill
86221 Coating Thickness Gauge tests the coating on the Cabinets
Parameters
| Parameter | 86221 Coating Thickness Gauge |
|---|---|
| Probe Tip | Ruby fixed |
| Measuring Principle | Ferrous: Hall Effect / Non-Ferrous : Eddy current |
| Probe Type | External cable probe |
| Measuring Range | 0.0-5000μm |
| Resolution | 0.1μm: 0μm -99.9μm 1μm: 100μm-999μm 0.01mm: 1.00mm-2.00mm |
| Accuracy | ≤±(3% reading+2μm) |
| Unit | μm / mil |
| Measuring Interval | 0.5s |
| 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 |
Features
Dual Compatibility with Iron and Aluminum Substrates
Utilizing two measurement principles, the gauge automatically identifies the substrate type. Measurements are completed in just 0.5 seconds.
86221 tests ferrous substrate in automatic mode
86221 tests aluminum substrate in automatic mode
Three Measurement Modes
Choose from Fe (ferrous), NFe (non-ferrous), or Fe/NFe combined mode, depending on your testing needs.
Compact and Portable Design
With its minimalist and lightweight design, the 86221 is easy to carry and simple to operate.
High-Sensitivity Probe for Rapid Response
Equipped with a high-sensitivity sensor, this digital thickness gauge provides fast and accurate measurements within 0.5 seconds.
Durable and Long-Lasting Probe
The probe tip is made of wear-resistant ruby, offering excellent durability and resistance to corrosion and abrasion.
Negative reading display ensures precise zero calibration and enhances testing accuracy.
Temperature compensation and analog-digital signal processing reduce interference and improve reliability.
Energy-efficient design for long battery life.
Qualifications and Standards
86221 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
Packing
| No. | Item | Quantity | Unit |
|---|---|---|---|
| 1 | 86221 Coating Thickness Gauge | 1 | Set |
| 2 | Fe Plate Of Zero Adjustment | 1 | Pcs |
| 3 | NFe Plate Of Zero Adjustment | 1 | Pcs |
| 4 | User Manual | 1 | Pcs |
| 5 | Standard Film | 1 | Pcs |
| 6 | Certificate/Warranty Card | 1 | Pcs |
FAQ
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1. The difference between 86220H and 86221
The functions and parameters of 86220H and 86221 are exactly the same, but the 86220H coating thickness gauge adopts an integrated design and can be operated with one hand; while the 86221 adopts a split design, the probe size is smaller, which is suitable for measuring narrow spaces and some special positions.