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    Digital A-Scan Ultrasonic Thickness Gauge, Metal/Steel/Pipe, Thru-Paint

    5 out of 5 based on 1 reviews | Write a review
    Digital ultrasonic thickness gauge for measuring thickness of metal, pipe, steel, etc., total measuring range 0.6mm-508mm, high resolution 0.01mm or 0.001 inches, material velocity range 500 to 9999 m/s (0.0197 to 0.3939 in/μs), A-scan display view, update rate 4Hz/8Hz/16Hz, high/medium/low gain, OLED color display, high accuracy and easy to operate, through-painting thickness measurement also available.
    SKU: ATO-UM-4
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    This series of digital A-scan ultrasonic thickness gauges is suitable for measuring the thickness of metal materials, pipes, pressure vessels, sheet metals (steel, aluminum), plastic, steel pipes, PVC pipes, glass and other materials.


    • High resolution 0.01mm or 0.001 inches
    • Measuring range: 0.6-508mm
    • A-scanning snapshot function
    • Zero cross measurement, high stability and reliability
    • Bright OLED color display
    • Adjustable High, Medium or Low gain
    • Update rate 4Hz, 8Hz, 16Hz for selections, 4Hz for ordinary application, 8Hz and 16Hz for quicker scan
    • Through coating, no need to remove the paint (UM-4D, UM-4DL Only)
    • Large data logger, can store 100,000 thickness values (UM-4DL Only)


    Digital a Scan Ultrasonic Thickness Gauge Details


    Model ATO-UM-4 ATO-UM-4D ATO-UM-4DL
    Display Type 2.4" color OLED, 320×240 pixels, contrast 10,000:1
    Operating Principle P-E (pulse-echo) with dual element transducers P-E (pulse-echo), E-E (echo-echo) with dual element transducers P-E (pulse-echo), E-E (echo-echo) with dual element transducers
    Total Measuring Range 0.6mm-508mm (0.025"-20.00"), depending on material, probe and surface condition
    Measuring Range (Standard Probe) PT08: 0.8-100mm TC510: 1.2-200mm
    Measuring Resolution Selectable 0.1mm or 0.01mm (selectable 0.01 inch, 0.001 inch)
    Units Inch or Millimeter
    Gain Low, Medium or High for various testing conditions
    Display Mode Normal, Min/Max capture, DIFF/RR%
    V-Path Correction Automatic
    Update Rate Selectable 4Hz, 8Hz, 16Hz
    Material Velocity Range 500 to 9999 m/s (0.0197 to 0.3939 in/μs)
    Languages Chinese, English, Japanese, French, German
    Alarm Settings Minimum and Maximum alarm. Thickness readings color dynamically changes when alarming.
    Power Supply Two AA alkaline batteries
    Operating Time Approximately 35 hours
    Instrument Shut-off Selectable ALWAYS ON or AUTO OFF after 5, 10, 20 minutes of no operation
    Operating Temperature -10℃ to +50℃
    Size 153mm×76mm×37mm (H×W×D)
    Weight 280g including batteries

    Function Comparison

    Features ATO-UM-4 ATO-UM-4D ATO-UM-4DL
    OLED Color Screen Y Y Y
    A-Scan Snapshot Y Y Y
    Gain: low, Medium, High Y Y Y
    Min/Max Capture Y Y Y
    DIFF/RR% Y Y Y
    Thru-paint N/A Y Y
    Data Logger N/A N/A Y
    DataView Software N/A N/A Y

    Data Logger of ATO-UM-4DL Ultrasonic Thickness Gauge

    Capacity 100,000 thickness readings, 400 files
    File Structure Grid file
    Rows × Columns 21×12
    Communication Port USB 2.0 port
    Software DataView PC Software

    * Standard Packing List

    Ultrasonic Thickness Gauge × 1, Standard Probe × 1, Battery × 2, Couplant × 1, Carrying Case × 1, Operating Manual × 1
    USB Cable × 1 (UM-4DL Only), Software × 1 (UM-4DL Only)
    (Kindly Reminder: Battery and Couplant is Not Included if Shipped By Air.)
    * Optional Probes

    Model PT08 TC510 PT06 PT04 ZT12 GT12
    Type UM-4
    Small Tube Fingertipe Cast iron High-Temperature
    Frequency 5MHz 5MHz 7.5MHz 10MHz 2MHz 5MHz
    Diameter 11mm 13.5mm 8mm 6mm 17mm 15mm
    Measuring Range 0.8~100mm 1.2~200mm 0.8~30mm 0.7~12mm 4.0~508mm 4.0~80mm
    Allowable Temperature -10℃ ~ 70℃ -10℃ ~ 70℃ -10℃ ~ 70℃ -10℃ ~ 70℃ -10℃ ~ 70℃ -20℃ ~ 450℃
    Picture ultrasonic thickness gauge PT08 probe ultrasonic thickness meter TC510 probe ultrasonic thickness gauge PT06 probe ultrasonic thickness gauge PT04 probe ultrasonic thickness gauge ZT12 probe ultrasonic thickness gauge GT12 probe

    Tips: Maintenance of Ultrasound Thickness Meter

    1. When using the ultrasonic thickness gauge, it should be handled carefully and lightly to avoid collision.

    2. After use of the instrument, the main engine and probe of the instrument should be cleaned and stored in the instrument box.

    3. When the instrument is not used for a long time, the battery must be taken out.

    4. If the instrument fails and cannot be used, it needs to return to the factory for maintenance.

    5. Cleaning of calibration test blocks
    Due to applying the couplant when calibrating the instrument with the test block, attention should be paid to anti-rust. Wipe the test block clean after use. If it is not used for a long time, a little grease should be coated on the surface of the test block to prevent rust. When it is used again, the grease can be wiped off first.

    6. Cleaning of casing of ultrasonic thickness gauge
    Alcohol, diluent and so on have corrosive effect on the casing, especially on the display window, so when cleaning it, gently wipe it with a small amount of water.

    7. Protection of Probe
    The surface of probe is acrylic resin, which is sensitive to the scratch of rough surface, so it should be pressed lightly in use. When measuring rough surface, try to reduce the scratch of probe on working surface. When measuring at room temperature, the surface of the object to be measured should not exceed 60℃, otherwise the probe can no longer be used. The attachment of oil and dust will make the probe wire aging and breaking gradually. After using, the dirt on the cable should be cleaned.

    Existing reviews of Digital A-Scan Ultrasonic Thickness Gauge, Metal/Steel/Pipe, Thru-Paint
    Digital A-Scan Ultrasonic Thickness Gauge for PVC pipe
    Is your Digital A-Scan Ultrasonic Thickness Gauge can be used to measure thickness of  PVC pipe?
    From: Paul | Date: 06/04/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, it can. Our digital ultrasonic thickness gauge for measuring thickness of metal, pipe, steel, etc.
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