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Portable Surface Roughness Tester

·Model:Surface Roughness Tester KR210
·Measuring Range:0.005~16.000μm
·Provenance:Made in China
·Delivery Time:1-3 days
·Main unit Size:158x63.5x46mm
·Total weight:2.7kg
·Packing Size:380x320x130mm

KR210 Portable Surface Roughness Tester is a new portable surface roughness meter,applicable to the workshop testing station,laboratory,metrology room environmental detection.

● Can display 14 kinds of roughness parameters

● 128 x 64OLED highlight digital display

● Compatible with ISO, DIN, ANSI, JIS national standards

● Metal body, anti-magnetic interference

● Portable,high reliability.



It can be used for surface roughness of parts such as plane, surface, inner hole, groove and so on. It is suitable for testing surface roughness of inspection station, laboratory and metrology room.


●Electromechanical integration design, small volume, light weight, easy to use;

●Using DSP chip to control and data processing, high speed, low power consumption;

●Intuitive and rich display information, can display all the parameters and graphics;

●Compatible with ISO, DIN, ANSI, JIS national standards;

●Residual quantity icon, prompting the user to charge;

●Continuous working time: more than 20 hours.

●Real-time clock settings and display, convenient data recording and storage.

●With automatic dormancy, automatic shutdown and power saving function

●Reliable control motor to go dead circuit and software design

●Measurement information display, menu prompt information, false information and switch machine and other tips that information;

●Can be connected to a computer and printer;

●Optional different sensor, measuring platform, mini printer, extension rod and other accessories.

●Optional bluetooth function.

●High price performance.

Working Principle

When measuring the surface roughness of the workpiece, the instrument first puts the sensor on the workpiece to be measured.On the surface, then the starting instrument is measured, and the sensor is driven by the precision driving mechanism inside the instrument.The device glides along the measured surface for a straight line, and the sensor is measured by a built-in sharp touch needle.The roughness of the surface, when the roughness of the surface of the workpiece is measured, causes the needle to produce the displacement.The displacement changes the inductance of the inductance coil of the sensor, thus the output of the phase sensitive detector.The end produces an analog signal proportional to the measured surface roughness, which is amplified and level.After the conversion, the data acquisition system is entered, and the DSP chip is digital filtering for the collected data.The parameters are calculated, the results are given on the display.

Technical Specification

Testing Parameters

14 parameters


Measuring Range

Ra: 0.005~16.000μm   Rz: 0.02~160.00μm

Sample Length

0.25, 0.80, 2.50mm

Evaluation Length


Maximum Drive Stroke


Indication Accuracy


Indication Error





Rechargeable Li-battery

Relative Humidity


Working Temperature


Standard Delivery

√ Roughness Tester Main Unit


√ Standard Sensor KS100


√ Standard Calibration Block


√ Bracket for Calibration Block


√ Adjustable Support


√ Power Charger


√ USB Cable


√ PC Software


√ User manual


√ Instrument case


√ Guarantee card



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