I. Overview

UT343D is a high-accuracy coating thickness gauge, which can measure coating thickness on both ferrous and non-ferrous metals. This device has features of high precision and non-destructive measurement and functions of single-point, multi-point averaging algorithm, and quick judgment. It is widely used in manufacturing, metal processing, aerospace, marine mechanics, rail transport, scientific research, quality supervision, and other industries.

Features:

1. The measurement method conforms to the magnetic method of measuring the thickness of non-magnetic coating on the magnetic metal substrate of GB/T 4956.
2. The measurement method conforms to the eddy current method of measuring the thickness of non-conductive coating on the non-magnetic substrate of GB/T 4957.
3. Automatic identification of the ferrous or non-ferrous substrate.
4. Gemstone embedding technology is adopted for the sensor, which is characterized by precision, wear resistance, and stability.
5. Zero and two-point calibration methods are adopted to correct the sensor systematic error and ensure the measurement accuracy.
6. Single-point and multi-point quick judgment and prompt (display: "PASS" or "FAIL").
7. 3-color warning light indicates the current value attribute (green: qualified, red: below the limit, yellow: above the limit).
8. Power on/off and measurement are accompanied by audio indication.
9. The display of the screen can be automatically rotated and manually locked so that users can read the measured values from different angles.
10. The high-capacity memory chip can store 500 groups of data, which can be exported for analysis through the host computer.
11. USB communication software: The product is connected to the computer software via USB for stored data exporting, tendency charts drawing, real-time online measurement, printing, etc.

II. Accessories

Open the packing box and take out the gauge. Please double-check whether the following items are deficient or damaged:

1. The gauge: 1 pc
2. User manual: 1 pc
3. Standard coating thickness sheet: 1 set (5 pcs)
4. Ferrous substrate: 1 pc
5. Non-ferrous substrate: 1 pc
6. Sensor cover: 1 pc
7. Hand rope: 1 pc
8. USB cable: 1 pc
9. AA alkaline battery: 2 pcs

III. Safety Instructions

1. Please perform the two-point calibration before using the gauge. For the specific operation method, please refer to the calibration section of the manual.
2. Initialization self-test is needed for the gauge when it is turned on. Please do not put the gauge sensor close to any metal object when it is turned on. Otherwise, the gauge will not work and need to be restarted in an environment where there is no metal close to the sensor.
3. Please keep the sensor part clean and in good condition to avoid dust, oil, and other factors affecting the measurement accuracy.
4. Do not use or store the gauge in high temperature, high humidity, flammable, explosive, and strong magnetic field environments.
5. Clean the gauge casing with a soft cloth and mild detergent. Do not use abrasives or solvents to avoid damage to the gauge.
6. Do not disassemble or modify the gauge to avoid damage to it.
7. When the LCD displays the low battery symbol, replace the battery in time. Remove the battery if it is not used for a long time.
8. The battery is a normal "AA" alkaline battery, which cannot be charged.
9. The standard coating thickness sheet is a high-precision accessory, which is related to the accuracy of the gauge and needs to be preserved properly to prevent scratches, corrosion, bending, and deformation of the surface.
10. The metal substrates are high-precision accessories, which are related to the accuracy of the gauge and need to be preserved properly to prevent scratches, rust, oxidation, and deformation of the surface.
11. If an error occurred in the use of the gauge, please restore the factory settings and perform the two-point calibration.

IV. Function Description

A. Structure Description

1. LED warning light
2. LCD screen
3. Power button
4. Set/Confirm/Calibrate button
5. Cancel/Clear button
6. Value/Down/Quick judgment button
7. Value/Up/Lock screen button
8. Sensor assembly
9. Hand rope hang buckle
10. USB communication interface
11. Battery compartment

B. Display Interface Description

1. Menu Icon Description:

   • Prompt tone setting
   • Backlight setting
   • Unit setting (um/mil)
   • Higher limit setting
   • Lower limit setting
   • LED warning light setting
   • Factory reset
   • Delete stored data
   • Continuous measurement setting

2. Measurement Mode Interface:

   • Statistical number
   • Average value
   • Min value
   • Max value
   • Battery level
   • Lock screen
   • Substrate type
   • Thickness unit
   • Calibration mode
   • Higher limit
   • Lower limit

3. Single-Point Judgment Mode Interface:

   • Pass/Fail Mode:
   • Single point
   • Multi-points average
   • Adjustment target value
   • Adjustment tolerance value
   • Measured value
   • Target value and tolerance value
   • Judgment result
   • Substrate type
   • Thickness unit

4. Multi-Point Judgment Mode Interface:

   • Pass/Fail Mode:
   • Single point
   • Multi-points average
   • Adjustment target value
   • Adjustment tolerance value
   • Judgment result
   • Substrate type
   • First measured value
   • Second measured value
   • Third measured value
   • Average value of points A, B, C, D, and E
   • Target value and tolerance value

V. Operating Instructions

A. Replace the Battery:

1. Turn the locking screw on the battery compartment counterclockwise, open the battery cover, and install 2 batteries in the direction indicated in the compartment.
2. Install the battery cover and turn the locking screw clockwise.
3. The battery level is indicated by the battery symbol at the top right of the screen.

B. Power On/Off:

1. Power on: Long press the power button until the screen is on. If the buzzer is turned on, it will be accompanied by a power-on prompt tone.
2. Power off: Long press the power button until the screen is off. If the buzzer is turned on, it will be accompanied by a power-off prompt tone.

C. Normal Measurement:

1. Long press the power button to turn on the gauge. The gauge displays the initialization process and enters the normal measurement mode after the initialization is completed.
2. Estimate the coating thickness of the measured object and select the corresponding or close standard coating thickness sheet to perform the two-point calibration on the measurement substrate.
3. Selection of the substrate: A substrate with thickness or material close to the measured object and without coating should be selected as the measurement substrate as far as possible.
4. For the two-point calibration, please refer to the calibration section of the gauge.
5. After the two-point calibration, the coating thickness measurement can be performed on the measured object.

D. Menu Settings: Short press the menu button in the normal measurement mode to enter the menu settings mode:

8. Factory Reset: Select the factory reset icon using the buttons, short press the menu button to enter the factory reset menu, turn on/off the factory reset using the buttons, and short press the menu button to confirm the factory reset or press the back button to exit.

9. Continuous Measurement Setting: Select the continuous measurement setting icon using the buttons, short press the menu button to enter the continuous measurement setting menu, turn on/off the continuous measurement by using the buttons, and short press the menu button to confirm the setting or press the back button to exit.

10. Delete Stored Data: Select the delete stored data setting icon using the buttons, short press the menu button to enter the delete stored data setting menu, turn on/off the delete operation by using the buttons, and short press the menu button to confirm the deletion or press the back button to exit.

11. Data Statistics: Statistical number (Num), average value (Avg), min value (Min), and max value (Max). If you need to clear the current statistics, press the menu button for 2 seconds to clear all stored data. The statistics will be reset to zero and the subsequent measured values will be restated.

VI. Performance Indexes

A. Technical Specifications:

• Function: Measuring range 0~1250um
• Thickness: 099.9um (Resolution: 0.1um); 1001250um (Resolution: 1um)
• Accuracy: ±(1~3%H)
• Minimum convex radius of curvature: 5mm
• Minimum concave radius of curvature: 50mm
• Minimum measured area diameter: 20mm
• Minimum substrate thickness: 0.5mm
• Display screen: 2-inch TFT LCD screen (Resolution: 320x240 pixels)
• Auto rotatable screen: Automatically rotates the display of the screen (Rotation angle: 0°, 90°, 180°, and 270°)
• Unit conversion: um/mil conversion

B. General Specifications:

• Display: 4-digit color LCD display
• Refresh rate: 0.5s
• Sensor type: Magnetic induction and eddy current composite sensor
• Impact resistance: The gauge can withstand a 1-meter drop
• Power requirement: AA alkaline battery (2 pcs)
• Dimensions: 152mm65mm35mm
• Weight: About 180g (including batteries)