K&M KR200 User manual

KR200 SURFACE ROUGHNESS TESTER
INSTRUCTION MANUAL
K&M Instruments Ltd.

1

2
1BRIEF INTRODUCTION .................................................................................13
1.1 MEASUREMENT PRINCIPLE ..............................................................................16
1.2 STANDARD CONFIGURATION......................................................................18
1.3 NAMES OF EACH PART OF THE INSTRUMENT ............................................20
1.4 BASIC CONNECTION METHOD..........................................................................24
1.4.2 Installation and Removing of Pickup......................................24
1.4.3 Power Adapter and Charging of Battery................................27
2MEASURING OPERATION ............................................................................30

3
2.1 PREPARATION FOR MEASUREMENT...........................................................30
2.2 BASIC MEASUREMENT STATUS ..................................................................34
2.3 MODIFYING CONDITIONS OF MEASUREMENT...........................................46
2.3.1 Sampling Length..........................................................................47
2.3.2 Evaluation Length........................................................................48
2.3.3 Standard.........................................................................................51
2.3.4 Range..............................................................................................53
2.3.5 Filter.................................................................................................54

4
2.3.6 Parameter.......................................................................................55
2.4 FUNCTION SETUP ..............................................................................................57
2.4.1. Switch to Print Mode/ to Data Mode........................................59
2.4.2. Setting the Pair (PIN) Code........................................................60
2.4.3.Print Parameters...................................................................................62
2.4.4. Print Parameter and Profile.......................................................64
2.4.5. Print Primary File .........................................................................65
2.4.6. Stylus Position..............................................................................67

5
2.4.7. Calibration......................................................................................68
2.4.8. Time Setting ..................................................................................71
2.4.9. Delete all data .......................................................................................73
2.4.10. Restore Factory Settings.................................................................73
2.5 System Setup............................................................................................73
2.5.1 Language.......................................................................................74
2.5.2 Unit...................................................................................................75
2.5.3. LCD Back-light..............................................................................77

6
2.5.4. LCD Contrast.................................................................................78
2.5.5. Bluetooth Power...........................................................................80
2.5.6. Printing Paper Width...................................................................81
2.6. CONNECTION WITH PC ..............................................................................83
3. OPTIONS AND USAGE ..................................................................................84
3.1ADJUSTABLE SUPPORTER AND SHEATH OF PICKUP..........................................84
3.2. MEASUREMENT STAND ....................................................................................86
3.3. EXTENDING ROD ..............................................................................................89

7
3.4.CONNECTION ROD OF MAGNETIC GAUGE BASE.............................................91
3.5. CURVED SURFACE PICK UP........................................................................93
4. TECHNICAL PARAMETER AND FEATURES ............................................95
4.1. PICKUP........................................................................................................95
4.2.DRIVING PARAMETER.......................................................................................96
4.3.DISPLAYACCURACY：LESS THAN OR EQUALTO ±10%..................................98
4.4.DISPLAY REPEATABILITY ：LESS THAN OR EQUALTO 6%.............................98
4.5. DISPLAY CONTENT ...........................................................................................98

8
4.7 SAMPLING LENGTH AND CUT-OFF LENGTH L................................................101
4.8 EVALUATION LENGTH LN................................................................................101
4.9 ROUGHNESS PARAMETERAND DISPLAY RANGE..........................................102
3~ 100% .............................................................................................................104
4.10 MEASURING RANGE AND RESOLUTION......................................................104
4.11 POWER SUPPLY ...........................................................................................105
4.12 TEMPERATURE/HUMIDITY RANGE...............................................................106
4.13DIMENSIONAND WEIGHT ..............................................................................107

9
4.14 CONNECT WITH PC.......................................................................................108
4.15 CONNECT WITH PRINTER ...........................................................................108
5. GENERAL MAINTENANCE.........................................................................109
5.1.TROUBLE SHOOTING.......................................................................................110
5.2.FAULT INFORMATION......................................................................................111
6. BATTERY SWITCH........................................................................................114
7. REFERENCE ..................................................................................................117
7.1 PROFILE AND FILTER ......................................................................................117

10
7.2. TRAVELING LENGTH ......................................................................................119
7.2.1. RC filter.........................................................................................119
7.2.2. PC-RC filter..................................................................................120
7.2.3. .Gauss Filter ................................................................................121
7.2.4. D-P Direct Profile........................................................................122
7.3 DEFINITIONS OF PRSR200 ROUGHNESS PARAMETERS.................................122
7.3.1. Arithmetical Mean Deviation of Profile.................................123
7.3.2. Rq Root-mean-square Deviation of Profile..........................125

11
7.3.3. Rz Ten Point Height of Irregularities.....................................126
7.3.4. Ry （ ISO ） Maximum Height of Profile ..................................128
7.3.5. Ry (DIN) Maximum Height of Profile...................................130
7.3.6. Rt Total Peak-to-valley Height..............................................130
7.3.7. Rp Maximum Depth of Profile Peak....................................131
7.3.8. Rm Maximum Depth of Profile Valley ................................131
7.3.9. Sm Mean Spacing of Profile elements...............................132
7.3.10. S Mean Spacing of Local Peaks of Profile...........................134

12
7.3.11. Profile Bearing Length Ratio...................................................136
7.3.12. Skewness of the profile............................................................138
7.3.13. R3z Third Maximum Peak-to-valley Height...............................139
8. ATTACHED TABLE:DISPLAY MAGNIFYING TIMES..............................139

13
1 Brief Introduction
KR-200 hand-held roughness tester is a new product developed by
Time Group Inc. This tester applies to production site and can be used
to measure surface roughness of various machinery-processed parts,
calculate parameters according to selected measuring conditions and
clearly display all measurement parameters and profile graphs on
LCD.

14
Features:
Multi-parameter measuring:Ra, Rz, Ry, Rq, Rp, Rm, Rt, R3z, Rmax, Sk,
S, Sm, tp;
High accuracy inductance pickup;
Four filtering methods of RC, PC-RC, GAUSS and D-P;
Compatible with four standards of ISO, DIN, ANSI and JIS;
128×64 dot matrix LCD displays all parameters and graphs;
DSP chip is used to control and process data with high speed

15
and low power
consumption;
Built-in lithium ion chargeable battery and control circuit have high
capacity, without
memory effect. Consecutive work time is longer than 20 hours;
Design of mechanical and electrical integration is adopted to achieve
small bulk, light
weight and easy usage;

16
Can be connected to Bluetooth printer to print all parameters and graphs;
Built-in standard USB interface enables communication with PC;
Automatic switch off, memory and various prompt instructions;
Accessories of curved surface pickup, measurement stand, sheath of
pickup, adjustable supporter and extending rod are available.
1.1 Measurement Principle
When measuring surface roughness of workpiece, the pickup is
placed on the surface of the part and then tracing the surface at

17
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 ARM processor and the measuring result can be read
on LCD, printed through printer and communicated with PC.

18
1.2 Standard Configuration
Table 1-1Standard Configuration List
Item
Quantity

19
Main Unit
1
Standard Sensor
1
Standard Sample plate
1
Organic Glass Test Support
1
Power Adapter
1
Communication Cable
1
Sheath of Pickup
1
Height Adjustable Supporter
1