1.FEATURES
This instrument is compatible with four standards of  ISO, DIN, ANSI and JIS and is widely used in production site to measure surface roughness of various machinery-processed parts, calculate corresponding parameters according to selected measuring conditions and clearly display all measurement parameters. When measuring the roughness of a surface, the
sensor is placed on the surface and then uniformly slides along the surface by driving the mechanism inside the tester. The sensor gets the surface roughness by the sharp built-in probe. This roughness causes displacement of the probe which results in change of inductive amount of induction coils so as to generate
analogue signal, which is in proportion to the surface roughness at output end of phase-sensitive rectifier. The exclusive DSP processes and calculates and then outputs the measurement results on LCD.

SPECIFICATIONS
Display： 4 digits, 10 mm LCD, with blue backlight
Parameters:  Ra, Rz, Rq, Rt
Display Range
           Ra, Rq:  0.025-16.00um/1.000-1600uinch
           Rz, Rt:   0.020-160.0um/0.780-9999uinch
Accuracy: Not more than ±10%
Fluctuation of display value: Not more than 6%
Sensor :
         Test Principle: Inductance type
         Radius of Probe Pin:       5um  (default) 2µm 
         Material of Probe Pin: Diamond
         Measurement Force of Probe:
                                 4mN(0.4gf)  for 5um stylus
                                 0.75mN(0.075gf) for 2um stylus
         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
Driving speed:
         Vt=0.135mm/s    if sampling length = 0.25mm  
         Vt=0.5mm/s        if sampling length = 0.8mm   
         Vt=1mm/s           if sampling length = 2.5mm   
         Vt=1mm/s           if returning                               
Profile digital filter
         Filtered Profile:            RC
         Filtered Profile:            PC-RC
         Filtered Profile:            Gauss
         Non-Filtered Profile:        D-P