Features 1. Function: A professionally manufactured intelligent handheld ultrasonic thickness gauge, controlled by a high-sensitivity microprocessor, monitors the thickness drop of various pressure vessels during operation, and quickly and non-destructively measures the speed of sound of 12 different materials and thickness, observe the coupling icon to see if the coupling is complete. 2. Use: smooth lines, ergonomic design, the thickness gauge is easy and safe to hold in the hand, key design, easy to operate, can quickly adjust the speed of sound and thickness, recall the stored data, set thickness alarm settings, effectively measure any shape s surface. 3. Accuracy: The sensor adopts dual design technology, the thickness gauge has high sensitivity and rapid response. It can improve the accuracy by correcting the nonlinear accuracy of the sensor, effectively reduce the error, and automatically calibrate to ensure the accuracy of the measurement. 4. Scope of application: Measuring range: 1.2 to 225.0mm (steel), suitable for measuring metals, plastics, ceramics, glass and other materials with good ultrasonic conductors, as long as the measured part is measured on two parallel planes. , not suitable for cast iron. 5. Maintenance: Ultrasonic thickness gauge is widely used in manufacturing, metal processing industry, chemical industry, commodity inspection, etc. It has a sturdy shell, wear-resistant and wear-resistant, and has 10 thickness measurement data storage and calling, which is convenient for measuring different hardware and parts anytime, anywhere. , the backlight function is easy to read the detection data. Specification: Working frequency: 5MHz  When the given thickness > 20mm, the accuracy is +/-5%; when the given thickness < 20mm, the accuracy is +/-1mm/H*100%.  Operation current:  Normal operation current: 50mA  With Backlight turn on current: 120mA  Stand-by current: 20uA Packing Contents main unit-1PCS   transducer-2 PCS(10mm 5MHz ,10mm 2.5MHz)  coupling agent-1PCS(50ml) 1. Before measurement  (1) Connect the transducer with the main unit, press ON/OFF to turn on,LCD display full screen for 0.5 second with backlight,then vertical  bar is displayed twice circularly, meanwhile the main display area show 0000 to 9999 progressively.After that, LCD display the last applied sound velocity with registered  (2) Sound velocity selected & adjustment Press"VEL"to enter sound velocity interface, press"VEL"again, you can select reserved velocity data by pressing"" or"" with the word "VEL"blinking on LCD ; If you need to adjust sound velocity data, press "VEL" once more, the "VEL" and "m/s' will keep blinking,indentifying the unit is on adjusting status.   2. Calibration If necessary,this step should be repeated. Pressing"CAL" for 2 seconds, LCD displays "CAL", indicating that the unit is on calibration status, vertical bar displayed circularly on the left of LCD. put few provided coupling agent on the stan-dard sample block to couple the transducer and the sample block.   3. Thickness measurement  Put the coupling agent on the area to be measured to couple the transducer with the hardware/workpiece, LCD will display the thickness reading. Package list: 1 x Thickness Gauge 1 x Plastic box 1 x 4mm calibration block 1 x probe (10mm 5MHz) Package List 1 x Thickness Gauge 1 x 4mm Calibration Block 1 x Probe (10mm 5MHz) 1 x Storage Bag