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1 Overview
This handheld surface roughness tester is a new product and adopts the most mainstream processor chips and
high-technologies to achieve a comprehensive upgrade and improvement, with 2.7” OLED, Bluetooth, SD card,
wireless remote control of measurements, MICRO-USB port, to enhance the quality of the instrument significantly. This
instrument is small handheld type suitable for production site measurement and mobile measurement, easy to operate,
comprehensive function, fast measurement, accurate and stable, easy to carry, which can be used to measure the
main parameters of the latest international standards. This product is in rigorous compliance with the international
standard. This product has multi optional accessories and can be connected to a PC and wireless Bluetooth printer.
1.1 Measurement Principle
To measure the surface roughness of the workpiece, place the pickup on the surface of the workpiece, and then start
the tester.
The precision driver inside the instrument will drive the pickup to slide at uniform linear speed along surface
to be measured.
The pickup will feel the roughness of surface to be measured through the built-in sharp stylus.
At this
time, the roughness of the workpiece surface to be measured will cause displacement of the stylus, which causes
change to the inductance amount of the coil of pickup, generating the output analog signal of the phase sensitive
detector which is proportional to the roughness of measured surface. This signal is fed to the data acquisition system
after amplification and level conversion.
The collected data is filtered and the parameters are computed via the ARM
chip. The measurements are displayed on the OLED. A Bluetooth printer can be connected wirelessly. All measurement
parameters can be printed. This tester can also communicate with the PC through the data cable, so as to perform
advanced analysis using PC software.
1.2 Measurement Principle
28 measurement parameters: Ra, Rq, Rz, Rt, Rp, Rv, RS, RSm, Rz(JIS), Ry(JIS), RSk, R3z, Rmax, RPc, Rmr, Rku,
RΔa, RΔq, Rδc, Ry; Rk, Rpk, Rvk, Mr1, Mr2, A1, A2, V0;
320μm large-range precision inductive pickup;
RC, PC-RC, GAUSS, D-P filtering;
ISO, DIN, ANSI, JIS standard;
2.7” large screen 128×64 dot matrix OLED display, no backlight, no dead ends, displaying all parameters and
graphics, Chinese/English menus;
Common chip for instrument control and data processing;
Built-in memory for store of 20 groups of measurements;
External SD card for expandable mass storage of data;
Built-in wireless remote module for remote measurement;
Built-in standard Bluetooth module for wireless connection of Bluetooth printer to print all parameters and graphics;
Built-in standard MICRO-USB interface for communication with the PC, with dedicated software for analysis of
measurement results;
Built-in lithium polymer rechargeable batteries and charging protection circuit;
Integrated, compact, portable;
Automatic shutdown and operation prompt;
Complete accessories/fittings. Optional curve surface pickup, groove bottom pickup, small bore pickup,
super-small-small bore pickup, tooth surface pickup, column, trimming platform, extended rod, lateral transfer bar
etc.
