eThick-640 Electromagnetic Ultrasonic Thickness Gauge
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Product Features & Applications
Product Features:
Support A – Scan Waveform Thickness Measurement.
Ergonomically optimized design, compact structure, ultra – small size, easy to carry, and comfortable to hold.
Precise thickness measurement, capable of penetrating coatings. No couplant is required,
and there is no need to polish the workpiece surface. The presence of paint, cladding, unevenness, etc. on the surface to be inspected is allowed.
The instrument has multiple material sound velocities pre – stored intemally. Meanwhile, material sound velocities can be dynamically added and deleted. The sound velocity calibration is equipped with a temperature compensation function to improve measurement accuracy.
High – definition LCD black – and – white screen display, suitable for measurement environments under various lighting conditions.
Product Applications:
Petrochemical industry: High-temperature pipeline inspection, non-contact thickness measurement without couplant, suitable for 800C high-temperature working conditions and coated pipe walls.
Shipbuilding: Thickness detection of hull steel plates, no polishing for rough surfaces, fast batch measurement of large-area plates.
Power industry: Thickness measurement of boilers and pressure vessels, stable measurement in high-temperature environments to ensure safe operation of pressure equipment.
Rail transit: Inspection of steel rails and vehicle metal parts,portable all-in-one design for fast and accurate on-site thickness data acquisition.
Machinery manufacturing: Thickness measurement of castings and forgings, compatible with various metal materials, meeting measurement needs of both thin parts and thick plates.
Steel structure construction: Thickness verification of building components, non-contact measurement without damaging workpieces, improving inspection efficiency.
Technical Specifications
| Sampling | 80MSPS |
| Bandwidth | 2.5MHz~6MHz |
| Transmit | ±600V_400Hz_125ns |
| Gain | Automatic 0 - 96 dB, step interval 1 dB |
| Measurement Accuracy | ±0.01mm |
| Sound Speed Range | 400~9999 m/s |
| Effective range | 1.0~640mm |
| Average Grade | Three - gear adjustable (L, M, H) |
| Lift‑off Distance | 5mm (Aluminum), 4mm (Carbon Steel), 3mm (Stainless Steel) |
| Measurement Materials | Metallic materials like aluminum, copper, iron, carbon steel, cast steel, alloy steel, stainless steel and titanium alloy |
| Measurement Mode | Single echo (I - E), Double echo (E - E) |
| Auxiliary Functions | Auto Freeze, Auto Gain, Auto Sleep, Metric - Imperial Switch, Sound Speed Saving, Backlight Adjustment |
| Correction Function | Sound Speed Calibration, Zero - point Calibration, High - temperature Compensation |
| Communication | RS - 485 or USB2.0 |
| Charger | 5V 2A, Standard Type - C Interface |
| Display Screen | 1.47 - inch 320×172 IPS_LCD |
| Body Dimensions | 178.4mm*42mm*32mm |
| Battery life | 3.7V 3400mAh lithium - ion battery, with a battery life of 6 hours |
| Net Weight of the Machine | Metal shell: 358g; Injection - molded shell: 255g; Injection - molded + quick - release: 289g |
Standard Configuration
| Name | Qty | Photo |
| Main unit | 1pc | |
| USB Charger | 1pc | ![]() |
| Charging Cable | 1pc | |
| Test Block (Iron) | 1pc | ![]() |
| Test Block (Aluminum) | 1pc | ![]() |
| Instrument Case | 1pc | ![]() |
| Certificate of Conformity | 1pc | ![]() |
| Instruction Book | 1pc | ![]() |
Optional Configuration
| Name | Remark | Photo |
| Small-diameter probe | 4MHz,Φ13mm*36mm | ![]() |
| Large-diameter probe | 4MHz,Φ40mm*60mm | ![]() |
| High-temperature probe | 4MHz,Φ33mm*40mm | ![]() |
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Last updated: 2026-06-22
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