The ARW-BT310 Roughness Tester is a high-precision, portable digital instrument designed for surface roughness measurement. The device features a mechatronic design, making it highly practical due to its compact size and lightweight construction, which ensures easy transport and operation. It utilizes a low-power ARM microprocessor for data calculation and processing, along with high-precision operational amplifiers and ADCs, significantly enhancing measurement accuracy and processing speed. The ARW-BT310 is compatible with four major standards: ISO, DIN, ANSI, and JIS.
This roughness tester boasts several innovative features, including a wide measurement range of 320 μm and a large 2.0” LCD display equipped with advanced IPS technology for high brightness and clear visibility from all angles, even in challenging environments. The main interface is rich in information and highly intuitive, allowing users to view all parameters and graphical data effortlessly. Additionally, the instrument offers excellent data storage capabilities, with a memory capacity of 500 sets of raw data and waveforms.
The ARW-BT310 Roughness Tester is widely used for surface roughness inspection across various industries, including automobile manufacturing, mechanical processing, metalworking equipment, printing and packaging, mold casting, and more.


Supply kit Roughness tester ARW-BT310

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Technical Specifications of Digital Roughness Tester ARW-BT310 |
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Detection principle |
Inductive |
Maximum drive travel |
≤ 17.5 mm |
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Measuring range |
320 μ m |
Ra,Rq: 0.005μm ~32μm; Rz,Ry,Rt,Rp,Rm: 0.02μm~320μm; Rsm, Rs: 1mm; Rmr: 0~100%; |
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Needle tip radius |
5 μ m |
Accuracy |
0.001μ m |
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Needle tip material |
Diamond |
Value error |
≤ ±10% |
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Measured force |
≤4mN |
Value variability |
≤ 4% |
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Needle stylus angle |
90° |
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Leader longitudinal radius |
45 mm |
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Parameter measurement |
Ra. Rq . Rz . Rt . Rp. Rv . RS . RSm . Rsk . Rku . RPc .Ry. Rmax. R3z |
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Sample Length |
0,25 mm x 0,80 mm x 2,50 mm |
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Evaluation length |
1L~5L optional (L is the sample length) |
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Dimensions |
156 mm × 55 mm × 46,5 mm |
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Instrument weight |
≦ 398 g |
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Work environment |
Temperature: -20℃~40℃; Relative humidity: < 90%, no vibration, no corrosive medium around |
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| Power supply |
Built-in lithium-ion rechargeable battery/external power adaprter |
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| Data output |
Bluetooth/USB |
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