The METERDI Surface Roughness Tester MR-RT25D is a portable, handheld instrument designed for fast and accurate surface roughness measurement. Its user-friendly design makes it ideal for shop floor use and mobile measurements. The device delivers stable accuracy, easy operation, and a broad range of surface roughness assessments.
The MR-RT25D is engineered for industrial settings, allowing precise roughness measurement of various machinery-processed parts. It evaluates surface textures according to both national and international standards. The tester provides digital and graphical results on its OLED display and supports Bluetooth printing and mobile app control for enhanced usability. Its small size, light weight, and ergonomic design ensure convenience in any working environment.
Name | Content | |||
Measurement Range | The Z axis (vertical) | 320µm (-160µm~160µm) / 12600μin (-6300μin~+6300μin) | ||
The X axis (horizontal) | 17.5mm/0.69″ | |||
Resolution ratio | The Z axis (vertical) | 0.002μm/±20μm | 0.004μm/±40μm | |
0.008μm/±80μm | 0.02μm/±160μm | |||
Measurement item | Parameter | Ra Rz Rq Rt Rc Rp Rv R3z R3y Rz(JIS) RyRs Rsk Rku Rmax Rsm Rmr RPc Rk Rpk Rvk
Mr1 Mr2 |
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Standard | ISO4287,ANSI b46.1,DIN4768,JISb601 | |||
Graphic | Primary profile, Roughness profile, load curves | |||
Filter | RC,PC-RC,Gauss,D-P | |||
LCD dimensions | 3.5-inch 480*320 | |||
The sampling length(lr) | 0.25,0.8,2.5mm | |||
Assessment length(ln) | Ln= lr×n n=1~5 | |||
Sensor | Principle | The displacement differential inductance | ||
Stylus | Natural Diamond, 90B cone angle, 5µm tip radius | |||
Force | <4mN | |||
Skid | Ruby,Longitudinal radius 40mm | |||
Traversing speed | lr=0.25, Vt=0.135mm/s | |||
lr=0.8, Vt=0. 5mm/s | ||||
lr=2. 5, Vt=1mm/s | ||||
Return, Vt=1mm/s | ||||
Accuracy | ±(5nm+0.1A) A: Ra of calibration test block | |||
Repeatability | No more than 3% | |||
Power supply | Built-in3.7VLithium ion battery,Charger :DC5V,800mA/3hour | |||
Working Time | More than 50 hours | |||
Size( L*W*H) | Display Unit | 158*55*52mm | ||
Drive Unit | 115*23*27mm | |||
Weight | About 400g | |||
Working Environment | Temperature:- 20℃ ~ 40℃Humidity:< 90% RH | |||
Store and Transportation | Temperature:- 40℃ ~60℃Humidity:< 90% RH |
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