MITECH MH180 User Manual
www.ponpe.com
MITECH CO., LTD.
www.mitech-ndt.com
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CONTENTS
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1 Overview............................................................................................................................................2
1.1 Advantages................................................................................................................................................ 2
1.2 Main Application &Testing Range.......................................................................................................... 2
1.3 Technical Specifications...........................................................................................................................2
1.4 Configuration............................................................................................................................................. 3
1.5 Working Conditions...................................................................................................................................3
2 Structure Feature &Testing Principle............................................................................................................. 6
2.1.1 D Type Impact Device...........................................................................................................................4
2.1.2 Different Types of Impact Device........................................................................................................ 5
2.2 Main Screen...............................................................................................................................................5
2.3 Keypad Definitions....................................................................................................................................5
2.4 Leeb Hardness Testing Principle............................................................................................................6
3 Preparation.............................................................................................................................................................6
3.1 Instrument Preparation and Inspection................................................................................................. 6
3.2 Impact Device Selection..........................................................................................................................7
3.3 Preparation of the Sample Surface........................................................................................................7
4 Testing Program................................................................................................................................................... 8
4.1 Start-Up...................................................................................................................................................... 8
4.2 Loading.......................................................................................................................................................8
4.3 Localization................................................................................................................................................ 8
4.4 Testing.........................................................................................................................................................8
4.5 Read Measured Value..............................................................................................................................8
4.6 Notification..................................................................................................................................................9
5 Operation Detail....................................................................................................................................................9
5.1 Power On/Off.............................................................................................................................................9
5.2 Material Setting......................................................................................................................................... 9
5.3 Hardness/Strength testing.....................................................................................................................10
5.4 Impact Direction Setting........................................................................................................................ 10
5.5 Average Times Setting...........................................................................................................................10
5.6 Data logging.............................................................................................................................................10
5.6.1 Viewing stored file/Group...................................................................................................................10
5.6.2 Deleting selected file/Group.............................................................................................................. 10
5.7 System Reset.......................................................................................................................................... 11
5.8 EL Backlight............................................................................................................................................. 11
5.9 Auto Power Off........................................................................................................................................ 11
5.10 Battery Replacement............................................................................................................................11
5.11Connecting to a Computer....................................................................................................................11
5.12 Error Code Reference..........................................................................................................................11
6 Maintenance & Servicing................................................................................................................................. 12
6.1 Impact Device Maintenance................................................................................................................. 12
6.2 Instrument Maintenance Program....................................................................................................... 12
6.3 Fault Analysis & Evacuation................................................................................................................. 12
6.4 Notice of Transport and Storage Conditions......................................................................................12
APPENDIX................................................................................................................................................................12
Table 1............................................................................................................................................................. 12
Table 2............................................................................................................................................................. 13
Table 3............................................................................................................................................................. 14
Table 4............................................................................................................................................................. 15
User Notes............................................................................................................................................................... 16
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1 Overview
Wide measuring range. Based on the principle of Leeb hardness testing theory. It can measure the
Large screen LCD, showing all functions and parameters. With EL background light.
Seven impact devices are available for special application. Automatically identify the type of impact
Test at any angle, even upside down.
Direct display of hardness scales HRB, HRC, HV, HB, HS, HL
Large memory could store 100 groups (Relative to average times 32 ～ 1 ) information including
Battery information showing the rest capacity of the battery.
User calibration function.
Software to connect to PC via RS232 port. Micro printer support.
Compact plastic case，suitable for use under poor working conditions
Continuous working period of no less than 100 hours with two alkaline batteries(AA size) ； Auto
Outline dimensions：150mm×74mm×32 mm
Weight：245g
Die cavity of molds
Bearings and other parts
Failure analysis of pressure vessel, steam generator and other equipment
Heavy work piece
The installed machinery and permanently assembled parts.
Testing surface of a small hollow space
Material identification in the warehouse of metallic materials
Rapid testing in large range and multi-measuring areas for large-scale work piece
Error and repeatability of displayed value see Table1-1 below.
No.
Type of impact
device
Hardness value of Leeb
standard hardness block
Error of displayed
value
Repeatability
1
D
760±30HLD
530±40HLD
±6 HLD
±10 HLD
6 HLD
10 HLD
2
DC
760±30HLDC
530±40HLDC
±6 HLDC
±10 HLDC
6 HLD
10 HLD
3
DL
878±30HLDL
736±40HLDL
±12 HLDL
12 HLDL
4
D+15
766±30HLD+15
544±40HLD+15
±12 HLD+15
12 HLD+15
5
G
590±40HLG
500±40HLG
±12 HLG
12 HLG
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1.1 Advantages
Leeb hardness of all metallic materials.
devices.
single measured value, mean value, impact direction, impact times, material and hardness scale
etc.
power off to save energy.
1.2 Main Application &Testing Range
1.2.1 Main Application
1.2.2 Testing Range
Testing range refer to Table 1 and Table 2 in the Appendix.
1.3 Technical Specifications
Table 1-1
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6
E
725±30HLE
508±40HLE
±12 HLE
12 HLE
7
C
822±30HLC
590±40HLC
±12 HLC
12 HLC
Measuring range：HLD（170～960）HLD
Measuring direction：0°~360°
Hardness Scale：HL、HB、HRB、HRC、HRA、HV、HS
Display：segment LCD
Data memory：max. 100 groups（relative to impact times 32～1）
Working power：3V（2 AA size alkaline batteries）
Continuous working period：about 100 hours（With backlight off）
Communication interface：RS232
1.4 Configuration
No.
Item
Quantity
Remarks
Standard
Configuration
1
Main unit
1
2
D type impact device
1
With cable
3
Standard test block
1
4
Cleaning brush (I)
1
5
Small support ring
1
6
Alkaline battery
2
AA size
7
Manual
1
8
Instrument package case
1
9
Optional
Configuration
11
Cleaning brush (II)
1
For use with G type
impact device
12
Other type of impact
devices and support rings
Refer to Table 3 and
Table 4 in the
appendix.
13
DataPro software
1
14
Communication cable
1
15
Micro Printer
1
16
Print cable
1
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Table 1-2
1.5 Working Conditions
Working temperature： 0℃～＋40℃；
Storage temperature：-30℃～＋60℃
Relative humidity: ≤90％；
The surrounding environment should avoid of vibration, strong magnetic field, corrosive medium and
heavy dust.
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2 Structure Feature &Testing Principle
2.1.1 D Type Impact Device
1 2 3 4 5 6 7
POWER: 2 X 1.5V
HARDNESS GAUGE
0-Steel and Cast Steel
1-Cold Work Tool Steel
2-Stainless Steel
3-Gray Cast Iron
4-Nodular Cast Iron
5-Cast Aluminum Alloys
6-Copper-Zinc Alloys
7-Copper-Aluminum
8-Wrought Copper
9-Wrought Steel
Material Option:
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2.1 Structure Feature
Main unit 2.Keypad 3. LCD display 4 Socket of RS232
Socket of impact device 6. Impact device 7 Label 8. Battery cover
1 Release button 2 Loading tube 3 Guide tube 4 Coil unit
5 Connection cable 6 Impact body 7 Support ring
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2.1.2 Different Types of Impact Device
DC DL C D+15 E G
2.2 Main Screen
Material：The present presetting material.
Impact direction：The present impact direction.
Hardness scale：Hardness scale of the present measured value.
Battery information：Showing the rest capacity of the battery.
Measured value：Display present single time measured value（without showing average icon），
Impact times： Times that have been impacted.
Average Icon：It will appear when showing the mean value of the measured values after reaching
Memory Icon: It appears when operating the instrument memory.
Turn on/off the EL
backlight
Data Save or Data
Delete
Turn the instrument
on/off
Hardness Scale
Average Icon
Direction
Battery Info
Impact Times
Measured Value
Material No
Memory Icon
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Below is the main display screen：
Instruction of the Main Display Screen:
or display the present mean value (with average icon prompting). “-HI-” means over conversion
value or measure range. “-LO-” means lower than conversion value or measure range.
the presetting impact times.
2.3 Keypad Definitions
Table 2-1
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