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Surface Roughness Meter For Laboratory

Surface Roughness Meter For Laboratory

surface roughness meter for laboratory TECHNIQUE DATA IMAGE APPLICATION Portable Surface Roughness Tester KR310 is a high accuracy instrument for measuring surface roughness. It can be used on variety of machining parts and operates on various surfaces, not only flat but also outer cone, outer...

Surface Roughness Meter for Laboratory is the best roughness tester instrument for measuring surface roughness, this meter is appropriate for laboratory to determine the roughness value of work piece and with detachable drive unit, it allows more flexible measurement in any orientation

Brife Troduction

Mechatronics and ergonomics design

Measures surface on complex and confined space such as curved surface, base of grooves

Measuring range up to 160μm

Touch Display, with Bluetooth capacity


Surface Roughness Meter for Laboratory KR310


The Surface Roughness Meter for Laboratory can be used on variety of machining parts and operates on various surfaces, not only flat but also outer cone, outer cylinder, curved, pinholes, grooves, recesses grooves and axle etc. This Roughness meter is not only suit for laboratory, but also for machining and manufacturing, quality control, inspection departments, it is the best roughness meter for mobile use and on site.


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 TFT touch screen, WYSIWYG, it includes a backlight to improve visibility in dark environments

All parameter and graphic can be displayed

4.The KR310 can be operated using the buttons or the touch display

5.Measurement range up to 160μm (can be optional to 320μm)

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

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

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

9.There is remaining charge indicator, charging hint

10It works over 50 hours while fully charged.

Technical Specification



The Z axis (vertical)

±80μm/±160 µmenhanced model

The X axis (Transverse)




Ra,Rz,Rq RtRp, Rv, R3z, R3y, Rz(JIS), Rs,Rsk,Rsm,Rku,Rmr,Ry(JIS), 

Rmax,RPc,Rk,Rpk,Rvk,Mr1, Mr2)


Bearing area curve, Roughness profile, Primary profile



The sampling length(lr)

0.25, 0.8, 2.5mm

Assessment lengthln

Ln= lr×n    n=1~5

Measuring principle

Differential conduct displacement

Stylus tip

Diamond, 90 cone angle, 5μmR



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


Tolerance Less than ±10%


Less than 6%

Power supply

Built-in Lithium ion battery, Charger :DC5V,800mA

Outline dimension

Main unit: 64*53*160mm   drive: 23*27*115mm

Weightmain unit

Around 380g

working Environment

Temperature: - 20℃ ~  40

Humidity: < 90% RH

Store and Transportation

Temperature: - 40℃  ~   60

Humidity: < 90% RH




Standard Sensor


The KR310 is equipped with Groove sensor, it measures surface in groove with width ≥2.5mm, depth ≤3mm, and on steps with height ≤3mm.


Standard Delivery



KR310 Host 

1 PC


1 PC

Calibration block and bracket

1 PC

Bracket for Calibration Block

1 PC

Height adapter

1 PC

Power Charger & USB Cable

1 PC

PC Software

1 PC

User manual

1 PC

Instrument case

1 PC


2 Years


Optional Accessories


roughness sensor image (2).jpg 

The Surface roughness tester equipped with special sensor and with aid of height adapter, Magnetic base, it can measure confined and complex work piece.


Height Adaptor


 height adaptor 600001.png



Company information

KAIRDA provides the best solutions and services. it is a leading manufacturer of NDT, main developed products include Digital Ultrasonic Flaw Detector, Surface Roughness Tester, Portable Leeb Hardness Tester, Digital Ultrasonic Thickness Gauge, Coating Thickness Gauge etc.

KAIRDA instruments users have spread all over China and also have been exported to many countries such as Japan, Korea, Singapore, India, Philippines, Middle East, European, South America, Africa and so on. With the advantages on performance, price and service, KAIRDA instruments have gained good reputation from the domestic and foreign market. 


We are extending the range of our new technical products.More and more new products

will be offered to the world market. In 2018, we launched surface roughness tester with

detachable drive unit. it solves the surface roughness measuring in confined spaces and complex surfaces.

We welcome new and old customers from all walks of life to contact us for future business

relationships and achieving mutual success!


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