KR-210 Roughness Measuring Instrument

KR210 portable roughness measuring instrument is a new product of KAIRDA GROUP CORPORATION , it is a portable stylus surface roughness shape measuring instrument, applicable to the workshop testing station, laboratory, metrology room environmental detection. Measurement of parameters in line with international standards of the United States, Germany, Japan and is compatible with Britain and other industrial developed country standards. Measurement results can be digital and graphic LCD display, also can be output to the printer.

 Functions and features:

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

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

3. Large range, parameters Ra, Rz, Rq, Rt, Rp, Rv, R3z, R3y, RzJIS, Rsk, Rku, Rsm, Rmr, Rx;

4. 128 x 64 OLED dot matrix display, digital / graphic display; highlight no perspective;

5. Display information rich, intuitive, can display all the parameters and graphics;

6. Compatible with ISO, DIN, ANSI, JIS national standards;

7. Built-in lithium ion rechargeable battery and a charging control circuit, high capacity, no memory effect;

8. Residual quantity indicator icon, prompting the user to charge;

9. Display of the charging process instructions, the operator can understand the degree of charge

10. Working time more than 20 hours of continuous work

11. Large capacity data memory, can store 100 groups of original data and waveform.

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

13. With automatic dormancy, automatic shutdown and power saving function

14. Reliable control motor to go dead circuit and software design

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

16. Full metal shell design, sturdy, compact, portable, high reliability.

17. Can be in English freely switch

18. Can be connected to a computer and printer;

19. Optional sensor surface, hole sensor, measuring platform, sensor, an extension rod and other accessories.  

Standard configuration:



Standard sensor


Reticle temp-let


                 Template support


Movable support


                  Power adapter


USB charging cable


instrument container


 The performance index of sensor:

The performance index of sensor:

The detection principle

Current induction

Measuring range

160 μm

Tip radius

5 μm

Tip material


Stylus force


Stylus angle


The guide head vertical radius


 Technical parameters



The maximum driving trip


Indicating error

Not more than ± 10%

Variation of indication

Not more than 6%

The measured profile

Roughness, waviness, the original contour



Ra(0.005μm ~  16μm),

Rz(0.02μm  ~  160μm),

Rq, Rt, Rp, Rv, R3z, R3y, RzJIS, Rsk, Rku, Rsm, Rmr, Rx.


RC, PCRC, Gauss, ISO13565

The sampling length L

0.25mm, 0.8mm, 2.5mm, 8mm

Evaluation length L


Internal storage capacity

100 groups of original data

External input / output interface


Electric source

Built-in rechargeable lithium ion battery or external power adapter

 Outline dimension:

143 x 55 x 42mm (host).

Weight: about 0.4KG (host).