1. High impedance dual element probe;
2. Pulse-echo mode, measuring range is 0.65~500mm (standard probe is 0.8~300mm)
3. Echo-echo mode (measurement through coating), measuring range 3-25mm (available in MiniTest 440 model)
4. Solid anti-static and fire-proof plastic shell.
5. Quickly measure the thickness of metal, plastic, glass, ceramics and other materials.
6. Suitable for use in laboratories and industrial sites.
â Suitable for detecting wall thickness and local corrosion and rust of various plates, pipes, oil tanks, oil pipelines, and boiler containers.
â Suitable for product inspection in various industrial sectors such as oil refining, steel, metallurgy, shipbuilding, machinery, chemical industry, electric power, and atomic energy.

| model | Crystal diameter | frequency | Measuring range | Operating temperature | Introduction |
| U5.0E | 8MM | 5.0MHZ | 3-25MM(EE); 0.8-300MM(TE) | -12~+60℃ | The 440 comes standard with a probe. The 440 probe has a through-coating measurement mode. |
| U10.0 | 4MM | 10.0MHZ | 0.65-20MM | -12~+60℃ | Small diameter probe. Minimum measuring tube outer diameter 10mm |
| U7.5 | 6MM | 7.5MHZ | 0.65-50MM | -12~+60℃ | Mainly used for measuring thin walls and small arc surfaces. The minimum outer diameter of the measuring tube is 15mm. |
| U5.0 | 8MM | 5.0MHZ | 0.8-300MM | -12~+60℃ | 420 and 430 come standard with probes, which are mainly used to measure materials with flat surfaces or large arcs. Minimum measuring tube outer diameter 20mm |
| U2.0 | 12MM | 2.0MHZ | 2.0-500MM | -12~+60℃ | Coarse grain probe, mainly used for measurement of coarse grain materials such as cast iron. Minimum measuring tube outer diameter 30mm |
| U5.0HT | 13mm | 5.0MHZ | 3.0-100MM | -12~+350℃ | High-temperature probes are mainly used to measure materials with temperatures below 350℃. Note: During measurement, the contact time between the crystal and the high-temperature object being measured shall not exceed 5 seconds. The minimum outer diameter of the measuring tube is 25mm. |
马景铎; 马天燕 - 《如何正确使用超声波测厚仪》
宇时先锋 - 《宇时先锋》
司春杰 - 《钢板超声波测厚仪测量误差及分析》
杜裕平 - 《超声波测厚仪精确测量钢板的方法》