Surface Roughness Tester

• Display: 4 digits, 10 mm LCD, with blue backlight
• Parameters:  Ra, Rz, Rq, Rt
• Measuring Range:   Ra, Rq:  0.005-16.00um/0.020-629.9uinch; Rz,Rt:   0.020-160.0um/0.780-6299uinch
• Accuracy:   10%
• Fluctuation of display value: Not more than 6%

• Test Principle: Inductance type
• Radius of Probe Pin: 5um
• Material of Probe Pin: Diamond
• Dynamo-measurement of Probe: 4mN(0.4gf)
• Probe Angle: 90°
• Vertical Radius of Guiding Head: 48mm

• Maximum driving stroke:  17.5mm/0.7inch
• Cutoff length (l): 0.25mm / 0.8mm / 2.5mm  (optional)
• Evaluation length:  5L
  

Driving speed:    

• sampling length = 0.25mm   Vt=0.135mm/s
  
• sampling length = 0.8mm    Vt=0.5mm/s
  
• sampling length = 2.5mm    Vt=1mm/s
  
• returning  Vt=1mm/s
  

Profile digital filter   

• Filtered Profile:            RC
• Filtered Profile:            PC-RC
• Filtered Profile:            Gauss
• Non-Filtered Profile:        D-P
  

Resolution :

• 0.001 m    if reading:10 m
• 0.01 m    if 10 m reading :100 m
• 0.1 m    if reading:100 m   

• Power Li-ion battery: rechargeable
• Operating conditions: Temp. 0~50  ; Humidity <80%
• Size: 140x57x48 mm  (5.5x2.2x1.9 inch)   
• Weight: about 420 g