High Accuracy TM 1240 Digital Ultrasonic Thickness Meter Gauge Tester for Testing Steel Plate Plastic glass Metal ETC

High Accuracy TM 1240 Digital Ultrasonic Thickness Meter Gauge Tester for Testing Steel Plate Plastic glass Metal ETC
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SMART SENSOR LCD Digital Ultrasonic Thickness Gauge tester AR850 1.2 to 220MM Sound Velocity Meter For Steel Aluminium Plate



 1. All products with original packaging box, so that can protect the products well on the shipping way avoid damage.
 2. The product does not contain the battery because of the limitation of the airline company.
 3. Warranty: All units are with Retail box. and we offer Long warranty period of 2 years,in two years will repair for free.
 4. Shipping Way: if you need it faster, you can choose Aliexpress standard shipping,also have China post airmail ! 


SMART SENSOR Ultrasonic Thickness Gauge This unit is an intelligent handheld product, which adopts ultrasonic measuring principle, and is controlled by micro processor, provides quick and precise measurement of thickness for most of industrial material. This unit is widely
used in various precise measurement for different hardware / parts in industrial realm; one of its important application is to monitor the level of thickness-decreasing during operation of various and pressure container. Diffusely
applied in manufacture fields, metal processing, and commercial inspection.

Scope of application  
This unit is suitable for measuring materials that are good ultrasonic conductor such as metal, plastic, ceramic, glass etc.,as long as the measured part in two parallel surfaces for measurement of thickness. This unit is not suitable for cast iron
due to its big crystalloid composition.




 1. Auto calibration to assure the accuracy.  
 2. Auto linear compensation: this advanced software program enhances the precision by correcting the non-linear accuracy of transducer.   
 3. Make a quick adjustment for the sound velocity / thickness, and a quick recall to the stored data

 4. Use “850-2_ ” and“850-3_”  keys to make a quick adjustment for the sound velocity /thickness,and a quick recall to the stored data.

 5. Coupling status indication: Observing the coupling icon to learn if the coupling is accomplished or not.
 6. 10 thickness measurement storage and recall function available, which facilitates the height work or working in wild area.  
 7. Sound velocity measurement.  Sound velocity measurement: With a given thickness by a sample hardware to measure the sound velocity, which avoid the further

 conversion or consultation of the table.

 8. 12 sound velocity for different material which is also adjustable .
 9.  Low battery indication.
10. Auto power off mode designed to conserve battery power.
11.More than 10000 times long lift keys.
12. Manual power off: Press the power button to turn it off

 Display:  4-digital LCD display
 Measuring range:  1.2~225mm(steel)
 Minimum limit for tube measuring:  Φ20*3mm (steel)
 Accuracy:  ±(1%H+0.1)mm,H denotes the measured thickness.
 Sound velocity range:  1000 to 9999 m/s
 Working frequency:  5MHz
 Minimum display unit:  0.1 mm
 Mininum limit for tube measuring(steel):  20 * 3.0mm(steel)
 Sound velocity Range:  1000~9999m/s
 Measuring sound velocity with a given thickness:                              measuring range:  1000 to 9999 m/s.
 When the given thickness >20mm, the accuracy is +/-5%;
 when the given thickness <20mm, the accuracy is +/-1mm/H*100%.
 Operation temperature:  0℃ to 40℃ 
 Relative humidity:  <90%RH
 Hardware/workpiece/material temperature:  <60℃
 Power supply:  1.5V AAA * 3 PCS (not include due to air limit)
 Operation current:  Normal operation current 50mA
 With Backlight turn on current 120mA
 Stand-by current: 20uA
 Stand-by current:  20uA
 Product Net Weight / Product Size   275g / 70.0*145.5*28mm
 Packing Contents  1 * Ultrasonic Thickness Gauge
 1 * 10mm 5HZ Transducer
 1 * 4mm Sampling Block
 1 * Operating Manual (Without Gel and Battery)                                      


Table of sound velocity   (Sound velocity of common materials)
 Material  Velocity(m/s)  Material  Velocity(m/s)
 Aluminum      6320  Acetate resin   2670
 Zinc  4170  Phosphor bronze  3530
 Silver  3600  Turpentine  4430
 Glod  3240  Glass  5440
 Tin  3230  Incoloy alloy  5720
 Iron/Steel  5900  Magnesium  6310
 Brass  4640  Monel alloy  6020
 Copper  4700  Nickle  5630
 SUS  5790  Steel 4330 mild  5850
 Acrylic resin       2730  Steel 330  5660
 Water 20C   1480                                      Titanium  6070
 Glycerinl    1920     Zirconium                                4650                                     
 soluble glass                      2350                           Nylon   2620



Operation Guide


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

 memory unit, indicating the gauge is ready for use.



 (2) Sound velocity selected & adjustment Press “VEL” to enter sound velocity interface, press “VEL” again, you can select reserved velocity data by pressing

 “850-2_ ” or “850-3_” 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. Then, increase or decrease the sound velocity to the data you want by pressing “850-2_ ” and “850-3_ ”,and this data will

 be automatically stored into current sound velocity memory unit. After that, press “ VEL” to confirm new sound velocity, and the icons of “VEL” and “m/s” stop





 2. Calibration
 A calibration should be made for every replacement of transducer or batteries, this operation is sufficiently important to assure the measuring precision.

 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. Until

 the LCD display 4.0mm indicating the calibration is completed. After calibration, sound velocity will back to your selected value, and ready to measurement.



 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.

 Notes: 860-12 icon on the screen indicates a well coupling, if the icon flashes or not shows that means a poor coupling. After remove the transducer, the reading

 will be hold.



 4. Sound velocity measurement
 With a given thickness to read out sound velocity of material: Obtains the thickness of material by using vernier caliper / micrometer, then couple the

 transducer with that sample material until a reading displays on the LCD, remove the transducer and press 850-2_or850-3_to adjust the reading match the

 thickness by caliper/mirometer, then press VEL to display the sound velocity and save in current velocity memory unit.



 5. Data storage
 (1) Keep pressing STORE for 2 seconds to enter save thickness data mode, LCD display THICKNESS, mm, M icon with first memory unit. If the first memory
 unit is not being registered, so LCD will display 0.0.
​​​​​​​ (2) Press 850-2_ or 850-3_to select your desired memory unit (1-10).
 (3) After picked up the memory unit, it will begin to work. While measuring, the memory unit NO will flash and the new

 measurement will be renew the memory unit, when the measurement completed, the last reading will be stored in the selected memory unit automatically

 with the memory unit NO stop blinking.



 6. Review the saved data
 Press the memory unit NO and stored data displayed. You can review the saved data in 1-10 units by pressing “850-2_ ” and “850-3_ ” and they are read-only. Press

 “STORE” will back to measurement mode.



 7. Low battery indication

 When 850-10_ icon flashes, please replace the batteries for further measurement.

 8. LCD back light & Automatic power off
 Before turn on the gauge, hold pressing “ CAL ”, and press ON/OFF button to turn on, the back light will active, every operation will turn on the back light for

 7 seconds until press ON/OFF to turn off the unit. If no any operation for 2 minutes, the gauge will turn off automaticly and the back light function will be














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