OVERVIEW OF LINSHANG LS220H, LS221, LS225 METAL COATING THICKNESS GAUGE:

The Linshang LS220H, LS221, LS225 metal coating thickness gauges bring many benefits in product quality control, especially in industries such as metal processing, coating, electroplating, aviation, shipbuilding. Linshang coating thickness gauges models LS220H, LS221, LS225 are widely used in controlling paint, electroplating, anodizing and protective coatings on metal surfaces.

It can be said that this is an essential quality control device in the automotive, mechanical, metal processing and laboratory QC industries.

Below is a detailed summary of the features, specifications and application scope of each machine line:

✅ 1. Linshang LS220H

Benefits:

• Fast measurement in just 0.5 seconds.

• Wear-resistant ruby ​​probe, high durability.

• Automatically detects substrate (iron or aluminum).

• Compact design, easy to carry on-site.

Technical features:

• Measuring principle: Hall effect (Fe) and eddy current (NFe).

• Measuring range: 0 – 2000 μm.

• Accuracy: ±(3%H + 2μm).

• Resolution: 0.1μm to 0.01mm depending on the measuring range.

• Machine size: 101×62×28 mm.

• Weight: 79g (with battery).

• Power source: 2 AAA batteries.

• Display: 128×48 matrix LCD.

• Application: Testing paint layers, anodic coatings, plating layers on ferromagnetic and non-magnetic metals such as aluminum, copper, zinc.[1]

✅ 2. Linshang LS221

Benefits:

• Detachable probe design, convenient for measuring in narrow spaces.

• Measures coatings on both magnetic and non-magnetic metals.

• Ruby probe, high precision, simple operation.

Technical features:

• Measuring principle: Hall effect (Fe) and eddy current (NFe).

• Measuring range: 0 – 5000 μm.

• Accuracy: ±(3%H + 2μm).

• Resolution: 0.1μm to 0.01mm.

• Machine size: 101×62×28 mm.

• Probe size: 71×26×22 mm.

• Weight: 114g (with battery).

• Power source: 2 AAA batteries.

• Application: Measure paint coatings, plating layers, anodized layers on metal materials such as iron, steel, aluminum, copper, chromium. Suitable for laboratory and field use.[2]

✅ 3. Linshang LS225 + F500

Benefits:

• Measures ultra-thin coatings under 10μm.

• Extremely high accuracy and repeatability.

• Flexible, removable probe and meter design.

• Supports 1–5 point calibration.

Specifications:

• Measuring range: 0 – 500 μm.

• Accuracy: ±(2%H + 0.3μm) after calibration.

• Repeatability: ±(0.8%H + 0.1μm).

• Measuring area diameter: 7 mm.

• Minimum sample thickness: 0.1 mm.

• Power supply: 4 AAA batteries.

• Machine size: 148×76×26 mm.

• Weight: 194g.

• Application: Measuring copper, zinc, tin, chromium plating on iron and other ferromagnetic metals. Suitable for electroplating, aviation, shipbuilding, hardware, small materials.[3]

 

🎯 SUMMARY OF GENERAL BENEFITS WHEN USING LINSHANG MACHINE:

• High accuracy, helps control coating quality.

• Simple operation, suitable for both field and lab.

• Wear-resistant ruby ​​probe, long life.

• Compact design, easy to carry. • Multi-industry applications: mechanics, coating, electroplating, automobiles, aviation, shipbuilding...

 

🎯 DETAILED COMPARISON TABLE:

Below is a detailed comparison table between 3 Linshang metal coating thickness gauges: LS220H, LS221, and LS225 + F500 for you to easily visualize and choose:

📊 Comparison Table of Linshang Machine Lines

Criteria : LS220H /  LS221 /  LS225 + F500

Design Monolithic machine Machine + separate probe Machine + separate probe

Measuring range:  0 – 2000 μm /  0 – 5000 μm / 0 – 500 μm

Accuracy : ±(3%H + 2μm) / ±(3%H + 2μm) / ±(2%H + 0.3μm) (after calibration standard)

Repeatability : Not declared / Not declared / ±(0.8%H + 0.1μm)

Resolution : 0.1μm – 0.01mm / 0.1μm – 0.01mm /  0.1μm – 0.01mm

Measurement substrate:  Fe and NFe / Fe and NFe / Fe (ferromagnetic)

Measurement time : ~0.5 sec /  ~0.5 sec / ~0.5 sec

Calibration : Automatic /  Automatic /  From 1–5 calibration points

Ruby probe abrasion-resistant / Ruby abrasion-resistant / Ruby abrasion-resistant

Power : supply 2 AAA batteries / 2 AAA batteries /  4 AAA batteries

Weight :  79g  /  114g  /  194g

Main applications : Coating, anodizing, plating on metals /  Coating, plating, anodizing on metals /  Ultra-thin plating: copper, zinc, tin, chromium

Outstanding advantages : Compact, easy to use in the field / Detachable probe, flexible measurement /  High accuracy, measuring ultra-thin coatings thin

 

🧭 SUGGESTIONS FOR CHOOSING:

• If you need a simple, compact, field-use measuring device: choose LS220H.

• If you need to measure in a narrow, more flexible space: choose LS221.

• If you need high accuracy, measuring thin coatings (under 10μm): choose LS225 + F500.