1. Introduction
The Linshang LS221 Coating Thickness Gauge is a high-precision instrument designed for measuring the thickness of non-magnetic coatings on magnetic metal substrates (ferrous) and non-conductive coatings on non-magnetic metal substrates (non-ferrous). It combines both Hall effect and Eddy current principles to provide accurate and stable measurements across a wide range of applications. Its unique split-type design allows for measurements in narrow or hard-to-reach spaces.
2. Safety Information
- Read this manual thoroughly before operating the device.
- Do not expose the device to extreme temperatures, humidity, or corrosive environments.
- Avoid dropping or subjecting the device to strong impacts.
- Use only the specified battery type. Ensure correct polarity when installing batteries.
- Keep the probe clean and free from debris to ensure accurate measurements.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
3. Product Overview
3.1 Components and Packaging List
The LS221 Coating Thickness Gauge comes with the following components:
Image: Packaging contents including the main unit, probe, calibration foils, reference plates, and accessories.
- LS221 Main Unit (with display)
- Probe (connected to the main unit)
- Wrist Lanyard
- Calibration Foils
- Reference Plates (2 pieces)
- Lithium-ion Battery (1 piece, included)
- User Manual
- Warranty Card
3.2 Key Features
- Measurement Range: 0.0-5000µm (0-5mm)
- High Precision and Stability: Ensures reliable and repeatable measurements.
- Dual-Use Capability: Automatically detects and measures coatings on both ferrous (Fe) and non-ferrous (NFe) metal substrates.
- Split-Type Design: The separate probe and main unit allow for convenient operation in confined or narrow spaces.
- Measurement Principles: Combines the Hall effect (for ferrous substrates) and Eddy current principles (for non-ferrous substrates).
- Wide Application: Suitable for measuring various coatings such as paint, chrome plating, copper plating, and galvanized layers.
- Simple Operation: Features a single-button design for ease of use.
Image: The LS221 gauge demonstrating its split design and single-button operation for easy use.
4. Setup
4.1 Unpacking
Carefully remove all components from the packaging. Inspect the device and accessories for any signs of damage. Retain the packaging for future storage or transport.
4.2 Battery Installation
The LS221 gauge requires one Lithium-ion battery, which is included. Locate the battery compartment on the main unit. Open the compartment cover, insert the battery according to the polarity markings, and close the cover securely.
4.3 Initial Power On
Press the power button (the single button on the main unit) to turn on the device. The display should illuminate, indicating the device is ready for use. If the display does not turn on, check the battery installation.
5. Operating Instructions
5.1 Power On/Off
- To Power On: Press the single button on the main unit.
- To Power Off: Press and hold the single button for a few seconds until the display turns off, or the device will automatically power off after a period of inactivity to conserve battery.
5.2 Taking a Measurement
The LS221 automatically detects the substrate type (ferrous or non-ferrous) and displays the coating thickness.
- Ensure the probe is clean and free of any foreign material.
- Place the probe gently and perpendicularly onto the coated surface to be measured.
- The device will automatically take a reading and display the coating thickness in micrometers (µm) or millimeters (mm). The substrate type (Fe or NFe) will also be indicated on the display.
- Lift the probe from the surface to prepare for the next measurement.
Image: The LS221 gauge measuring coating thickness on a ferrous substrate, displaying the reading and 'Fe' indicator.
Image: The LS221 gauge displaying a measurement, highlighting its 5000µm measurement range.
Image: The LS221 gauge being used to measure coating thickness on a painted surface, illustrating its wide application.
5.3 Unit and Language Selection
The LS221 allows for selection of measurement units (µm/mm) and display language. Refer to the on-screen prompts or the full user manual for detailed instructions on how to access and change these settings using the single button interface.
6. Calibration
For optimal accuracy, it is recommended to perform calibration periodically or when measuring on a new type of substrate. The LS221 comes with calibration foils and reference plates for this purpose.
- Ensure the gauge is powered on.
- Place the appropriate reference plate (ferrous or non-ferrous) on a stable, flat surface.
- Place a calibration foil of known thickness onto the reference plate.
- Follow the on-screen instructions or refer to the detailed user manual for the specific calibration procedure, which typically involves taking a measurement on the bare reference plate and then on various calibration foils.
- The device may feature an authoritative certification for high accuracy and stable data, as shown in the image below.
Image: An example of an authoritative calibration certificate, indicating high accuracy and stable data for the gauge.
7. Maintenance
7.1 Cleaning
- Wipe the main unit and probe with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or immerse the device in water.
- Ensure the probe tip is free from dust, dirt, or coating residue before each use.
7.2 Storage
- Store the device in its original packaging or a protective case when not in use.
- Store in a cool, dry place, away from direct sunlight and extreme temperatures.
- Remove the battery if the device will not be used for an extended period to prevent leakage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or dead battery; incorrect battery installation. | Replace battery; check battery polarity. |
| Inaccurate readings. | Dirty probe tip; uncalibrated device; unstable surface. | Clean probe tip; perform calibration; ensure stable measurement surface. |
| Display shows error message. | Measurement out of range; internal error. | Ensure coating thickness is within 0-5000µm; restart device. If error persists, contact support. |
9. Specifications
| Parameter | Value |
|---|---|
| Model Number | GT-LS221 |
| Measurement Range | 0.0 - 5000 µm |
| Measurement Principles | Hall Effect (Ferrous), Eddy Current (Non-Ferrous) |
| Substrate Types | Ferrous (Fe) and Non-Ferrous (NFe) metals |
| Manufacturer | Shenzhen Linshang Technology Co., Ltd. |
| Item Weight | 1 kilogram |
| Battery Type | 1 Lithium-ion (included) |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
10. Warranty and Support
The Linshang LS221 Coating Thickness Gauge comes with a warranty card included in the packaging. Please refer to the warranty card for specific terms and conditions regarding coverage and duration.
For technical support, service, or inquiries about spare parts, please contact your authorized Linshang dealer or the manufacturer directly. Contact information can typically be found on the warranty card or the manufacturer's official website.