Description
What is the UNI-T UT343D?
The UNI-T UT343D is a digital coating thickness gauge used to measure the thickness of coatings (like paint, plating, anodizing, etc.) on metal surfaces. It works on both ferrous (magnetic) and non-ferrous (non-magnetic) metals, making it versatile for automotive, industrial, quality control, and inspection work

UNI-T UT343A UT343D UT343E Thickness Gauge Digital Coating Gauge Meter Cars Paint Thickness
⚙️ Main Features & Specifications
✔ Core Measurement Specs
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Measuring Range: 0 – 1250 µm (micrometers) – suits most paint & coating thickness jobs.
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Accuracy: ±(3%H + 1 µm) – good precision for professional inspection.
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Resolution:
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0.1 µm for 0 – 99.9 µm
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1 µm for 100 – 1250 µm
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Measurement Methods: Single point or continuous mode
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Display: 2.0″ TFT LCD with backlight for clear readings.
✔ Smart Features
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Auto recognition of ferrous vs non-ferrous surfaces
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Quick Test Mode: Set a thickness range and the device quickly tells you pass/fail
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3-Color LED + Audio Alarms: Shows green/yellow/red depending on value and gives sound alerts.
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Auto-rotating screen: Helps you read values from any angle.
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Max/Min/Avg modes: Useful for average or extreme value analysis.
✔ Data & Connectivity
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Stores up to 500 readings inside the unit.
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USB interface + PC analysis software for export, charts, and reports.
✔ Power & Build
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Runs on 2 × 1.5 V AA batteries.
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Auto power-off and low battery indicator.
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Compact and lightweight (~175 g).
📌 How to Use the UT343D
Here’s a practical step-by-step usage guide:
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Turn On Device
Insert batteries and power on. The backlit LCD will light up. -
Select Measurement Mode
Choose whether you want single-point (one value) or continuous (scan mode). -
Calibrate (Recommended)
Use the supplied calibration standards on a known thickness plate to calibrate zero and one point. This improves accuracy. -
Place Sensor on Surface
Gently place the sensor flat against the coating. Ensure no tilt or gap. -
Read Result
Value appears directly on the screen in µm. LEDs and audio will indicate pass/fail if quick-test mode is set. -
Store or Export Data
After measurement, you can store the value (up to 500) and later export to a PC via USB for analysis/printing.
🌟 Benefits & Advantages
🔍 Accurate & Reliable
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High accuracy and both single/continuous readings make it useful for quality control, inspections, and professional testing.
🚗 Great for Automotive & Industry
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Perfect for checking car paint thickness, industrial coatings, corrosion protection layers, and more.
📊 Data Logging & Analysis
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500 stored sets + PC export lets you generate reports and track measurements over time.
⚡ Quick Decision‐Making
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With 3-color LED + sound alarms and quick-test mode, you can instantly tell if a coating passes your criteria.
🧰 Easy to Use
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Simple interface with auto screen rotation, backlight display, and intuitive menu — suitable for professionals and beginners alike.
🏭 Wide Application
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Used in automotive detailing, manufacturing, quality inspection, aerospace, marine, metal fabrication, and research labs.
📦 Who Should Use It?
✔ Automotive technicians & detailers
✔ Quality control inspectors
✔ Paint shop operators
✔ Metal fabrication professionals
✔ Industrial engineers and researchers




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