METCH MR200 Surface Roughness Instrument

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METCH MR200 Surface Roughness Instrument

The MR200 surfaces roughness measure instrument is suitable for shop floor use and mobile measure to need of a small handheld instrument, it operation simple, function overall, measure fast, accuracy stability, take convenience.The SR200 is capable of evaluating sueface textures with a variety of parameters according to various national standards and international standard.The measurement results are displayed digitall/graphically on the LCD,and output to the printer

MR200 Surface Roughness Instrument
 
Outline
The MR200 surfaces roughness measure instrument is suitable for shop floor use and mobile measure to need of a small handheld instrument, it operation simple, function overall, measure fast, accuracy stability, take convenience.The SR200 is capable of evaluating sueface textures with a variety of parameters according to various national standards and international standard.The measurement results are displayed digitall/graphically on the LCD,and output to the printer.
Measurement principle
When measuring roughness of part surface, the pickup is placed on the surface of the part and then tracing the surface at constant rate. The pickup acquires the surface roughness by the sharp stylus in pickup. The roughness causes displacement of pickup which results in change of inductive value of induction coils thus generate analogue signal which is in proportion to surface roughness at output end of phase-sensitive rectifier. This signal enters data collection system after amplification and level conversion. After that, those collected data are processed with digital filtering and parameter calculation by DSP chip and the measuring result can be read on LCD, printed through printer and communicated with PC.
Features
115 parameters: Ra、Rq、Rz、Rt、Rp、Rv、RS、RSm、Rz(JIS)、Ry(JIS) 、RSk、R3z、Rmax、RPc、Rmr;
1 High accuracy inductance pickup;
1 Four filtering methods of RC, PC-RC, GAUSS and D-P;
1 Compatible with four standards of ISO, DIN, ANSI and JIS;
1Can store 15 sets of measurements results
1 128×64 dot matrix LCD displays all parameters and graphs;
1 DSP chip is used to control and process data with high speed and low power consumption;
1 Built-in lithium ion chargeable battery and control circuit have high capacity, without memory effect. Consecutive work time is longer than 20 hours;
1 Design of mechanical and electrical integration is adopted to achieve small bulk, light weight and easy usage;
1 Can be connected to printer to print all parameters and graphs;
1 Built-in standard RS232 interface enables communication with PC;
1 Automatic switch off, memory and various prompt instructions;
1 Optional printer, analysis software and measurement platform.
Technical parameters
Name
Content
Measuring range
Z Axis(Vertical)
160μm
X Axis(Horizontal)
17.5mm
Resolution
Z Axis(Vertical)
0.01μm/±20μm
0.02μm/±40μm
0.04μm/±80μm
Measurement item
Parameters
Ra、Rq、Rz、Rt、Rp、Rv、RS、RSm、Rz(JIS)、Ry(JIS) 、RSk、R3z、Rmax、Rpc、Rmr;
Standard
ISO,ANSI,DIN,JIS
Graphic
Roughness profile,Material ratio curve,Direct profile
Filter
RC,PC-RC,Gauss,D-P
Sampling length (lr)
0.25,0.8,2.5mm
Assessment length ln)
Ln= lr×n    n=1~5
Pickup
principle
Differential inductance
Stylus
Natural Diamond, 90B cone angle, 5μm tip radius
Force
<4mN
Skid
Ruby,Longitudinal radius 40mm
Traversing speed
lr=0.25,   Vt=0.135mm/s
lr=0.8,    Vt=0. 5mm/s
lr=2. 5,    Vt=1mm/s
Return      Vt=1mm/s
Accuracy
Less than or equal to ±10%
Repeatability
Less than or equal to 6%
Power supply
Built-in Lithium ion battery,AC adapter 8.4V,800mA
L×W×H
119×47×65mm
Mass
approximately 380g