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Surface Finish Tester



Made By : Trusize

Model No. : SRT 202


Surface Roughness Tester / Surface Finish Tester, Trusize make


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 acoording 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 the nuniformly 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 contorl 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 cabel 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.

Display : 4 digits, 10 mm LCD, with backlight

Display Range Ra : 0.05 - 10.00 um/1.000-400.0uinch

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 (I) : 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 = 2.5 mm Vt = 1mm/s