model:srt6200
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 se-lected 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.

＊ very easy to operate

＊ multiple parameter measurement: ra, rz

＊ highly sophisticated inductance sensor

＊ built-in lithium ion rechargeable battery and control

   circuit with high capacity

＊ small in size, light in weight and easy to use

＊ can communicate with pc computer for statistics,

   printing and analysing by the optional cable and the

   software for rs232c interface.

＊manual or automatic shut down. the tester can be 

   switched off  by pressing  the power key at any time.

   on the other hand, the tester will power itself off

   about 5 minutes after the last  key operation.

2．specifications

display： 4 digits, 10 mm lcd, with blue backlight

parameters:  ra, rz

display  range

           ra:   0.05-10.00um/1.000-400.0uinch

           rz:   0.020-100.0um/0.780-4000uinch

accuracy: not more than 10%

fluctuation of display value: not more than 6%

sensor :

         test principle: inductance type

         radius of probe pin: 10um

         material of probe pin: diamond

         measurement force of probe: 16mn(1.6gf)

         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:  1~5 cut off  optional

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

resolution : 0.001μm    if reading ＜10μm

                      0.01μm    if 10μm≤reading＜100μm

                      0.1μm    if reading ≥100μm                              

power li-ion battery: rechargeable

operating conditions:  temp. 0~50℃

                                      humidity <80%

size：140x57x48 mm  (5.5x2.2x1.9 inch)    
weight: about 420 g