| Model No. | Type | Surface temperature of workpiece | Measuring Range | Resolution | Sound velocity range | Standard thickness film | Pipe measuring lower limit | 
MEWOI-ST200  
  | 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) | 
MEWOI-210  
  | Universal(Steel Special) | -10―60℃ | 0.8—300mm | 0.1mm | 1000—9999m/s | 4.0mm | 
MEWOI-220  
  | High temperature type | -10―300℃ | 0.8—300mm | 0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-220B  
  | Ultra high temperature type | -10―450℃ | 0.8—300mm | 0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-230  
  | Precision type | -10―60℃ | 0.75-300mm  | 0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-240  
  | Precision type(With cast iron function) | -10―60℃ | 0.75-300mm (cast iron function 3-300mm) | 0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-250  
  | 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 | 
MEWOI-ST400  
  | 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) | 
MEWOI-ST400B  
  | Smart | -10―60℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-ST420  
  | Intelligent high temperature type | -10―300℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-ST420B  
  | Intelligent high temperature type | -10―450℃ | 0.75-300mm Steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-ST440  
  | Intelligent cast iron | -10―60℃ | 5.0-60mm cast iron 1.2-300mm steel | 0.1mm/0.01mm | 1000—9999m/s | 4.0mm | 
MEWOI-ST800  
  | Hola | -10―60℃ | 0.13-20mm steel | 0.01mm/0.001mm | 1000—9999m/s | 4.0mm | 
MEWOI-FTC198  
  | 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 | 
MEWOI-UM9810  
  | Universal | 0~50ºC (60-300ºC Optional)  | 1.5~200mm/0.06~8inch | 0.1mm, ±(0.5%n+0.2)  | × | 
  | 
  | 
MEWOI-9818  
  | 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
 
  | 
MEWOI-KT260  
  | 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
 
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