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KR310 Portable Surface Roughness Tester High Accuracy Surface Roughness Meter KR310 Portable Surface Roughness Tester High Accuracy Surface Roughness Meter


KR310 Portable Surface Roughness Tester High Accuracy Surface Roughness Meter

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Graphic:load curve, Roughness profile, Primary Profile
Power supply:Built-in Lithium ion battery 3200mAh, Charger :DC5V
Weight(main unit):Around 380g
  • KR310

  • Dahometer

  • 1 set

  • 5-7 days

  • 1 years,Lifelong maintenance

  • TT/Western Union/Paypal etc

  • Negotiable


KR310 Portable Surface Roughness Tester High Accuracy Surface Roughness Meter


  1. Mechatronics and ergonomics design, small size, light weight, easy to operation  

  2. The stylus drive unit can be stored within the main unit for standard measurement, or separated from the display unit by using the supplied cable which allows more flexible measurement in any orientation. The driver can be separated and reattached in one simple step

  3. 3.5 inches color graphic LCD touch screen, WYSIWYG, it includes a backlight for visibility in dark environments

  4. It displays all parameter and graphic

  5. The KR310 can be operated using the buttons or the touch screen

  6. Measurement range up to 320μm

  7. Large internal memory: 100 item of raw data and curves can be stored

  8. The KR310 provides Bluetooth Capability , support wireless connection with mobile and mini printer

  9. Built-in lithium-ion rechargeable battery and controlling circuit, high capacity, no memory effect

  10. There is remaining charge indicator, charging hint

  11. It works over 50 hours while fully charged.

  12. Language: Chinese and English

  13. DSP chip control and data processing, high speed, low power consumption

  14. Real-time clock setting and display for easy data recording and storage

  15. With auto sleep, auto power off, power-saving features

  16. Reliable circuit and software design to preventing the motor stuck

All parameters or any of the parameters which set by users can be printed


Measuring rang

The Z axis (vertical)

320µm (-160µm~160µm) , 12600μin (-6300μin~+6300μin)

The X axis (Transverse)

17.5mm(0.69 inch)


the Z axis (vertical)

0.002μm/±20μm,  0.004μm/±40μm

0.008μm/±80μm,  0.02μm/±160μm


Ra Rz Rq Rt Rc Rp Rv R3z R3y Rz(JIS) Ry Rs Rsk Rku Rmax Rsm

Rmr RPc Rk Rpk Rvk Mr1 Mr2


load curve, Roughness profile, Primary Profile



The sampling length(lr)

0.25, 0.8, 2.5mm

Assessment length(ln)

Ln= lr×n    n=1~5


Measuring principle


Stylus tip

Diamond, 90 cone angle, 5μmR


Measuring force<4mN, Skid force<400mN

Probe head

hard alloy, skid radius of curvature: 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




Not more than ±(nm+10%A)   A refers to the standard RA value

Residual Profile

Not more than 0.010μm


not more than 3%

Power supply

Built-in Lithium ion battery 3200mAh,  Charger :DC5V

Outline dimension

Main unit: 158×55×52mm   drive unit: 23×27×115mm

Weight(main unit)

Around 380g

Zoom of height adapter


working Environment

Temperature: - 20℃ ~ 40℃

Humidity: < 90% RH

Store and Transportation

Temperature: - 40℃ ~ 60℃

Humidity: < 90% RH


ISO4287, ANSI B46.1, DIN4768, JIS B601

Optional accessory

Magnetic Base,  height gauge adapter, curved sensor, small hole sensor, deep groove sensor, pinhole sensor, Extending Rod, Right Angle Rod, mini printer, 200mm platform, 300mm marble platform, software, mobile APP



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About Us

Guangdong Hongtuo Instrument Technology Co.,Ltd has been specializing in density testing field on developing, innovating and producing since the year it was establised.

Contact Us
   Contact:Vicky He
   Mobile/WhatsApp:+86 13592795134​​​​​​​
  Address:No. 2-1, Xinya Road, The Third Industrial Park, Dalingya Village, Daojiao Town, DongGuan, GuangDong, CN
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