SR120 Surface Roughness Tester

Features of SR120 Surface Roughness Tester

• Support four measurement parameters Ra, Rz, Rt, Rq can be selected ;

• A double-screen design is used to facilitate reading from the top window during measurement ;

• With calibration function, and simple operation ;

• Using ARM processor for data processing and computing, high speed, low power consumption, high precision ;

• OLED liquid crystal display, high brightness, full viewing angle, wide temperature, suitable for various occasions ;

• Supports mobile APP control to avoid measurement errors caused by contact control;

• Rechargeable lithium-ion battery for up to 8 hours continuous operation; 

• The sensor probe has a protective door design, which effectively protects the sensor probe and ensures the accuracy of the measurement.

• Widely used in mechanical processing, aerospace, automotive parts, communications, power, electronics and other industries.

• Suitable for universities, research institutes, technical supervision bureaus, and special inspection institutes.

Specification of SR120 Surface Roughness Tester

Measurement parameters

Ra、Rz、Rq、Rt

Measurement range（μm）

Ra、 Rq： 0.05 ~ 10.0; Rz、 Rt： 0.1 ~ 50

Sampling length（mm）

0.25 ， 0.80 ， 2.5

evaluation length（mm）

1.25 ， 4.0 ， 5.0

stroke length（mm）

6

indicating accuracy

0.001μm

indication error

±（7-10）%

the variability of indication

＜12%

Tip arc radius

10 μm±1 μm

Static measuring force of stylus

≤ 0.016N

Force change rate

≤ 800N/m

Sensor head pressure

≤ 0.5N

battery

3.7V lithium ion battery

overall dimension

110 mm×81mm×32 mm

weight

150g

Standard Delivery of SR120 Surface Roughness Tester