Marmonix MSRT-910S Digital Ra Roughness Meter

The Marmonix MSRT-910S surface roughness tester measures 13 parameters, including Ra, Rz, Rq, Rt and Rmax, with 0.001 µm resolution from a piezocrystal pick-up. It offers 0.25, 0.8 and 2.5 mm cut-offs, 1.25, 4 or 5 mm evaluation lengths and ISO, DIN, ANSI or JIS settings, with accuracy specified at < ±6%. A built-in Li-ion battery runs it for more than 20 hours, and USB sends results to a PC or printer. Browse all Marmonix roughness testers.

MarMonix MSRT-910S Surface Roughness Tester

The MarMonix MSRT-910S Digital Surface Roughness Tester is an advanced device designed for precise surface roughness measurements in various industrial applications. Its compact and lightweight design, combined with state-of-the-art mechanical and electrical integration, ensures portability and efficiency for professionals. Powered by a DSP chip, it delivers high-speed and low-power consumption performance, making it a reliable choice for accurate and efficient testing.

This tester is compatible with international standards such as ISO, DIN, ANSI, and JIS, allowing it to meet diverse industrial requirements. It can measure 13 surface roughness parameters, providing comprehensive analysis for a wide range of surfaces. Equipped with a 128×64 DOT matrix LCD, the device displays parameters and graphical results with exceptional clarity. Additionally, it offers four filtering methods (RC, PC-RC, GAUSS, and D-P) to ensure precise analysis for different machining surfaces.

The MSRT-910S features a built-in, high-capacity rechargeable lithium-ion battery, allowing for over 20 hours of continuous operation. Its memory can store more than 100 groups of measurement data and waveforms, while the USB connectivity enables easy transfer of results to computers and printers. User-friendly features include an English menu, real-time clock settings, an electric quantity indicator, and energy-saving functions such as auto-sleep and automatic shutdown.

MSRT-910S technical specifications

MarMonix MSRT 910S Digital Surface Roughness Tester Specification

The MSRT-910S is specified as follows:

How portable roughness testers are used to check machined surfaces

In a typical machining or grinding shop, the drawing calls up a surface finish such as an Ra limit, and inspectors need to confirm it at the machine or on the part rather than sending every piece to a lab.

A stylus roughness tester traces the surface, filters the profile with a cut-off wavelength and evaluates parameters such as Ra or Rz over an evaluation length that generally consists of five sampling lengths. ISO 4288 (now ISO 21920-3) pairs Ra above 0.02 up to 0.1 µm with a 0.25 mm cut-off and 1.25 mm evaluation length, and Ra above 0.1 up to 2 µm with a 0.8 mm cut-off and 4 mm evaluation length. ISO 4288 guidance also notes that roughness values vary from trace to trace, so a single measurement may not show full compliance.

In a typical check, the inspector sets the cut-off for the expected finish, measures at more than one position and compares the results with the drawing limit. The datasheet lists machined surfaces such as crankshafts, camshafts and cylinder-head mating faces among its uses. Where the same parts also carry a hardness requirement, the MHT-710DS portable hardness tester checks it on site.

Questions about the MSRT-910S roughness tester

Which roughness parameters does the MSRT-910S measure?

The MSRT-910S measures 13 parameters: Ra, Ry, Rq, Rz, Rt, RSm, RS, Rp, Rv, R3z, RSk, Rmax and Rmr, with 0.001 µm resolution and ISO, DIN, ANSI or JIS settings.

How accurate is the MSRT-910S?

The MSRT-910S is specified at < ±6% accuracy and < 6% repeatability, and offers four filters (RC, PC-RC, GAUSS and D-P) to suit different machined surfaces. Results show as values and graphs on a 128×64 dot-matrix LCD.

How long does the MSRT-910S battery last?

The MSRT-910S runs for more than 20 hours of continuous work on its built-in 3.7 V Li-ion battery, with auto-sleep and auto shutdown. It stores more than 100 groups of data and waveforms that can be sent to a PC or printer over USB.