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| Contact Us for Quotation | Email：mewoi@mewoi.com | Whatsapp: +8618620373879 |
MEWOI-ST420B-Ultrasonic Thickness meter,Ultrasonic Thickness Gauge, Sound Velocity thickness meter
1，INTRODUCTION
MEWOI-ST420B ultrasonic thickness measuring instrument measures the thickness according to the principle of ultrasonic pulse reflection. When the ultrasonic pulse emitted by the probe reaches the interface of the material through the measured object, the pulse is reflected back to the probe. The thickness of the measured material is determined by accurately measuring the propagation time of the ultrasonic wave in the material. All kinds of materials, such as metals, plastics, ceramics, glass, which can make ultrasonic wave propagate at a constant speed, can be measured by this principle. Various plates and processed parts can be accurately measured, and another important aspect is the ability to monitor the various pipes and pressure vessels in the production equipment and to monitor their use The degree of thinning after being corroded in the process. Widely used in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields. Compared with MEWOI-ST200 series, ST4XX series ultrasonic thickness gauge adds many functions, such as gain setting, limit alarm, data transmission, etc. MEWOI-ST400B ultrasonic thickness gauge combines the functions and technical parameters of MEWOI-ST400 and MEWOI-ST420, that is, it has all the functions of MEWOI-ST400. It can also be equipped with a hih temperature probe and a small diameter probe. |
2，MAIN FEATURES
| 1，With coupling prompt and low voltage prompt; |
| 2，Shutdown mode: manual and automatic shutdown functions (after three minutes of operation); |
| 3， Minimum capture: you can choose to display the current thickness value or the minimum thickness value. |
| 4，Data transmission: RS232 interface, can be connected with pc |
| 5，Data storage: 500 measured values and 5 sound speed values can be stored |
| 6，Bound limit alarm: The limit can be set, and the measured value outside the limit can be automatically buzzed. |
| 7,The speed of sound is adjustable: the sound speed can be measured by using a known thickness test block; |
| 8,Gain setting: with high and low gain setting function |
| 9,metric conversion: select mm or inch |
| 10,Backlight display: suitable for measurement in poor lighting conditions. |
3，TECHNICAL SPECIFICAITON
| Model No. | MEWOI-ST420B(Intelligent high temperature type) |
| Measuring Range | 0.75-300mm steel |
| Display resolution | 0.1mm/0.01mm |
| Sound velocity range | 1000—9999m/s |
| Standard thickness film | 4.0mm |
| Surface temperature of workpiece | -10―450℃ |
| liquid-crystal display | Four-digit LCD display with adjustable contrast |
| Measurement accuracy | Measuring range: 0.75-9.99mm, the resolution is 0.01mm, the tolerance is ±0.05mm; |
| Measuring range: 0.75-90.99mm, the resolution is 0.01mm and the tolerance is ±(1%H+0.04)mm; | |
| Measuring range: 100-300mm, the resolution is 0.1mm, the tolerance is ±3‰H; | |
| Pipe measuring lower limit | ¢20mm thickness 3.0mm (5P¢10 probe, steel) |
| ¢6mm thickness 1.5mm (10P¢4 probe, steel) | |
| Operate time | Continuous operation for 100 hours (2*1.5V AA alkaline batteries) |
| Sound Velocity | 1000m/s-9999m/s |
| Outline dimension | 126×66×27mm |
| Weight | 300g |
Standard layout | MEWOI-ST400/400B Host 5p¢10 probe; instrument box, random data, coupling agent; |
| (MEWOI-ST420/420B plus, high temperature probe and coupling agent; MEWOI-ST440 plus cast iron probe; MEWOI-ST800 default with a single crystal probe.) | |
| Power Supply | 2x1.5V AA Battery |
SELECTION GUIDE
| Model No. | Type | Surface temperature of workpiece | Measuring Range | Resolution | Sound velocity range | Standard thickness film | Pipe measuring lower limit |
| Universal | -10―60℃ | 0.8—300mm | 0.1mm | 1000—9999m/s | 4.0mm | ¢20mm thickness 3.0mm (5P¢10 probe, steel),¢6mm thickness 1.5mm (10P¢4 probe, steel) |
| Universal(Steel Special) | -10―60℃ | 0.8—300mm | 0.1mm | 1000—9999m/s | 4.0mm | |
| High temperature type | -10―300℃ | 0.8—300mm | 0.01mm | 1000—9999m/s | 4.0mm | |
| Ultra high temperature type | -10―450℃ | 0.8—300mm | 0.01mm | 1000—9999m/s | 4.0mm | |
| Precision type | -10―60℃ | 0.75-300mm | 0.01mm | 1000—9999m/s | 4.0mm | |
| Precision type(With cast iron function) | -10―60℃ | 0.75-300mm (cast iron function 3-300mm) | 0.01mm | 1000—9999m/s | 4.0mm | |
| Precision type(With high temperature, cast iron function) | -10―450℃ | 0.75-300mm (cast iron function 3-300mm) | 0.01mm | 1000—9999m/s | 4.0mm | |
| Smart | -10―60℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | ¢20mm thickness 3.0mm (5P¢10 probe, steel),¢6mm thickness 1.5mm (10P¢4 probe, steel) |
| Smart | -10―60℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | |
| Intelligent high temperature type | -10―300℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | |
| Intelligent high temperature type | -10―450℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | |
| Intelligent cast iron | -10―60℃ | 5.0-60mm cast iron 1.2-300mm steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | |
| Hola | -10―60℃ | 0.13-20mm steel | 0.01mm/0.001mm | 1000—9999m/s | 4.0mm | |
| Universal | 0~50ºC (60-300ºC Optional) | 0.75-300.0mm(determined by probe) | 0.1mm | 1000m/s-9999m/s | ≥20mm(Accuracy: ±5%) | Φ15x2.0mmΦ20x3.0Determined By Transducer |
| Universal | 0~50ºC (60-300ºC Optional) | 1.5~200mm/0.06~8inch | 0.1mm, ±（0.5%n+0.2） | × | ||
| Precision type （Steel Case） | 0~50ºC (60-300ºC Optional) | 0.75~400mm(45#steel,Depend on Probe) | 0.01mm/0.1mm （±（0.5%n+0.05）） | 1000m/s-9999m/s | Φ15x2.0mmΦ20x3.0mm Determined By Transducer | |
| Universal | -10―60℃ | 0.75~600mm (0.03~11.8inch) depends on probe | 0.01mm/0.1mm （±（0.5%n+0.05）） | 1000~9999m/s (0.039~0.394in/us) | ±(0.5%Thickness+0.04)mm | Φ15x2.0mmΦ20x3.0mm Determined By Transducer |
