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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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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Material Selection

Hardness/Strength
switch

Plus or Up

Hardness Scale
Selection

Direction change

Minus or Down

Print data

Impact Times set

Data logging or Enter

 Press key to store present group of measured value into memory. This operation is only valid

after displaying the mean value.

 Press key and could display single measured value.

 Press key could switch on of off the background light of LCD.

 Press key to set the impact direction.

 Press key to change the impact times in one group. The impact times item will flash when first



Press key to change the hardness scale.

 Press key to change the material. Presetting hardness scale recovers to HL automatically after

 Press key to switch between hardness test and strength test. Only D and DC type of impact

 Press key to print out the measured values after measurement.

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pressing the key, and then the impact times value will plus or minus when pressing the or

key. Press key finally to exit from changing the impact times process.

material presetting changed.

device has the function of strength testing. So hardness testing is the only selection if the impact
device is not D or DC type.

2.4 Leeb Hardness Testing Principle

The basic principle is to use an impact body of certain weight impacts against the testing surface under
certain test force, then measure the impacting velocity and the rebounding velocity of the impact body
respectively when the spherically test tip is located 1mm above the testing surface.
The calculation formula is as follows:

HL=1000×VB/ VA

Where, HL—— Leeb hardness value

VB—— Rebounding velocity of the impact body

VA—— Impacting velocity of the impact body

3 Preparation

3.1 Instrument Preparation and Inspection

Verification of the instrument is by using standard test block. The error and repeatability of displayed
value should be within the regulation of Appendix table 2. The instrument and impact device must be
calibrated using a standard hardness block before use as the first time, or having not been used for a
long time, or having reset the instrument system.

Press key, meanwhile pressing down the key to power on the system. Then the user calibration
screen shows as left below.

Test for 5 points on the standard hardness block.
It would display the average measured value

after measuring 5 times. Press key to
change to its nominal value.

Press key to confirm the calibration finally. Or
press the key to cancel the calibration.

Range of adjustment: ±30HL.

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3.2 Impact Device Selection



In the preparation processing for sample surface, the hardness effect of being heated or cold



Too big roughness of the being measured surface could cause error. So, the surface of the sample

 Support of test sample. Support is no necessary for heavy sample. Medium-weight parts must be



Curved surface: The best testing surface of sample is flat. When the curvature radius R of the

 The sample should have enough thickness, minimum thickness of sample should conform to Table



For the sample with hardened layer on surface, the depth of hardened layer should conform to Table

 Coupling. Light-weight sample must be firmly coupled with a heavy base plate. Both coupled

 Magnetism of the sample itself should be avoided.

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Refer to Appendix Table 1 and Table 3 for selection of impact device.

3.3 Preparation of the Sample Surface

Preparation for sample surface should conform to the relative requirement in Appendix Table 3.

processing on the surface of sample should be avoided.

to be measured must appear metallic luster, smoothing and polish, without oil stain.

set on the smoothing and stable plane. The sample must set absolutely equability and without any
wobble.

surface to be tested is smaller than 30mm (D, DC, D+15,C, E and DL type of impact device) and
smaller than 50mm (G type of impact device), the small support ring or the shaped support rings
should be chosen.

3.

3.

surface must be flat and smooth, and there is no redundant coupling agent existing. The impact
direction must be vertical to the coupled surface. When the sample is a big plate, long rod or
bending piece, it can be deformed and become unstable, even though its weight and thickness is
big enough, and accordingly, the test value may not be accurate. So the sample should be
reinforced or supported at its back.

Note ： Use a calibrated hardness tester, test the standard test block downward vertically for 5
times, the arithmetical average value compare with the value of standard test block. If this value
exceeds the standard value, could use the function of user calibration to adjust.

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4 Testing Program



Insert the plug of the impact device into the socket of impact device on the instrument.



Press the key，now power is on. The instrument is in working mode.

 Press the release button on the upside of the impact device to test. The sample and the impact

 Each measure area of the sample usually need 3 to 5 times of testing operation. The result data

 The distance between any two impact points or from the center of any impact point to the edge of

 If want accurate conversion from the Leeb hardness value to other hardness value, contrastive test

Type of Impact

Device

Distance of center of the two

indentations

Distance of center of the

indentation to sample edge

Not less than (mm)

Not less than (mm)

D、DC

3

5

DL

3

5

D+15

3

5

G

4

8

E

3

5

C

2

4

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4.1 Start-Up

4.2 Loading

Pushing the loading-tube downwards until contact is felt. Then allow it to slowly return to the starting

position or using other method locking the impact body.

4.3 Localization

Press the impact device supporting ring firmly on the surface of the sample, the impact direction

should be vertical to the testing surface.

4.4 Testing

device as well as the operator are all required to be stable now. The action direction should pass the
axis of the impact device.

dispersion should not more than mean value±15HL。

testing sample should conform to the regulation of Table 4-1.

is needed to get conversion relations for the special material. Use inspection qualified Leeb
hardness tester and corresponding hardness tester to test at the same sample respectively. For
each hardness value, each measure homogeneously 5 points of Leeb hardness value in the
surrounding of more than three indentations which need conversion hardness, using Leeb hardness
arithmetic average value and corresponding hardness average value as correlative value
respectively, make individual hardness contrastive curve. Contrastive curve at least should include
three group of correlative data.
Table 4-1

4.5 Read Measured Value

After each impact operation, the LCD will display the current measured value, impact times plus one, the
buzzer would alert a long howl if the measured value is not within the valid range. When reaching the

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presetting impact times, the buzzer will alert a long howl. After 2 seconds, the buzzer will alert a short

 Replacing the impact device must be done during Power off. Otherwise the main body could not

 You could not save the current test value if the impact time is less than the presetting times value.

 Only type D and type DC of impact device have the function of strength test option. You can not



Not all materials could convert to all hardness scale value. The hardness scale is reset to HL

Material No.

Material

Material No.

Material

0

Steel and cast steel

5

Cast aluminum alloys

1

Cold work tool steel

6

Copper-Zinc alloys

2

Stainless steel

7

Copper –Aluminum alloys

3

Gray cast iron

8

Wrought copper

4

Nodular cast iron

9

Wrought steel

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howl, and display the mean measured value.

NOTE:HL values tested by different impact devices are different,eg.780HLD≠780HLC

4.6 Notification

identify the type of the impact device, and it may damage the circuit board of the main body.

change the setting to strength testing when using other types of impact device. The setting would be
set to hardness testing automatically after replacing the impact device whether the setting is
hardness testing or not before.

automatically after changing the material. So select material firstly before changing the hardness
scale.

5 Operation Detail

5.1 Power On/Off

Press to power on the instrument. Be sure to plug in the impact device before powering on. The
system would automatically detect the type of the impact device during power up, and would display this
information on the screen. Users should pay attention to the probe type displayed on the screen. After
pausing for several second, the screen will exit and enter the main display screen as following:

The instrument can be turned off by pressing the key while it is working. The tool has a special
memory that retains all of its settings even when the power is off.

5.2 Material Setting

Press key to change the material to the one you want to preset. Hardness scale recovers to HL
automatically after material presetting changed. Please select material firstly, then select hardness
scale.
In hardness testing, The relationship between the material number displayed on the instrument screen
and the material is as follows:

Table 5-1

In strength testing, The relationship between the material number displayed on the instrument screen

and the material is as follows:

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Table 5-2

Material No

Material

Material No

Material

0

Mild steel

5

Cr-Mo steel

1

High carbon steel

6

Cr-Ni-Mo steel

2

Cr steel

7

Cr-Mn-Si steel

3

Cr-V steel

8

Super strength steel

4

Cr-Ni steel

9

Stainless steel



Here only displays the valid hardness scale for the present selected impact device and



Please select material firstly, then select hardness scale.

 Presetting hardness scale recovers to HL automatically after presetting material is changed.

Press the key to move to the impact direction that you will preset.

1) Press key in testing state. The impact times item will begin to flash;

2) Press or key to set the average times to the number you want.

3) Press key finally to exit from the operation.

1) Press the key to activate the data logging function. The memory icon will appear. It will display

2) Use the key and the key to select the desired file to view.

3) Press the key to see details of that group data.

4) Use the key and the key to view each single measured data in that group while viewing

5) Press the key to return to previous screen at any time during data logging.

1) Press the key to activate the data logging function. The memory icon will appear. It will display

2) Use the key and the key to scroll to the file that will be deleted.

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5.3 Hardness/Strength testing

Press key to switch between hardness testing and strength testing (бb) .

Note: Only D and DC type of impact device has the function of strength testing. So hardness
testing is the only selection if the impact device is not D or DC type.

In hardness testing, Press key to change the hardness scale. The supported hardness scale includes:
HL, HV, HB, HRC, HS, HRB and HRA.

Note：

material. It would not display the hardness scale which is not valid.

5.4 Impact Direction Setting

5.5 Average Times Setting

You could modify average times within the range of 1 to 32 as following:

5.6 Data logging

At most one hundred files (F00-F99, one group as one file) can be stored inside the gauge. By

simply pressing the key after a new measurement finishes-the screen showing the “AVE” icon, the
measured hardness/strength group values will be saved to memory. The new saved file is appended as
the last file of the memory. This function provides the user with the ability to view/delete a file/group
previously saved in memory.

5.6.1 Viewing stored file/Group

To view the memory data, follow the steps:

the current file name, the test parameter of the group data and the mean value of the group. If there
is no data in the memory, it will display: <E04>, which means no memory data, and then return back.

details.

5.6.2 Deleting selected file/Group

The user may require deleting a file from the instrument memory. The procedure is outlined in the
following steps.

the current file name, the test parameter of the group data and the mean value of the group. If there
is no data in the memory, it will display: <E04>, which means no memory data, and then return back.

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3) Press the key on the desired file. It will automatically delete the file, and display “-DEL”.

4) Press the key, at any time, to exit the data logging function and return to measurement mode.

Note ： Do not shut down the instrument while deleting data. It could lead to unpredicted

Error Code

Explanation

Error Code

Explanation

E00

Battery exhausted

E05

Can not print

E01

Value out of range

E06

E02

Measurement not finished

E07

E03

Data already saved

E08

E04

No memory data

E09

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consequence if shutting down while deleting.

5.7 System Reset

Press down the key while powering on the instrument will restore factory defaults. The only time this
might possibly helpful is if the parameter in the gauge was somehow corrupted.

5.8 EL Backlight

With the EL background light, it is convenient to work in the dark condition. Press key to switch on or
switch off the background light at any moment as you need after power on. Since the EL light will
consume much power, turn on it only when necessary.

5.9 Auto Power Off

The instrument features an auto power off function designed to conserve battery life. If the tool is idle
(neither measuring nor any key operation) for 5 minutes, it will turn itself off. Before powering off, the
LCD display of the instrument will continue flashing for 20 seconds. Except key , press any key could
stop the twinkle of LCD screen and stop the operation of power off at the moment.
While the voltage of the battery is too low, the display will show <E00>, then power off automatically.

5.10 Battery Replacement

Two AA size alkaline batteries are needed as the power source. After several hours’ usage of the
batteries, the battery symbol on the screen will be shown as . The more of dark part indicates the
more close to fill. When the battery capacity runs out, the battery symbol will be shown as and

will begin to flash. When this occurs, the batteries should be replaced by a new pair.

NOTE:
Pay attention to the polarity of the batteries!
Please take out the batteries when not working during a long period of time.

5.11Connecting to a Computer

The Instrument is equipped with a RS232 serial port. Using the accessory cable (The cable and
following referred software are optional parts), the gauge has the ability to connect to a computer, or
external storage device. Measurement data stored in the memory of the gauge can be transferred to the
computer through the RS232 port. Detailed information of the communication software and its usage
refer to the software manual.

5.12 Error Code Reference

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6 Maintenance & Servicing



After the impact device has been used for 1000--2000 times, please use the nylon brush provided to

 Release the impact body after use.



Any lubricant is absolutely prohibited inside the impact device.

 When using standard Rockwell hardness block to testing, if all the error is bigger than 2 HRC, it may



When the hardness tester appears some other abnormal phenomena, please do not dismantle or

Fault Appearance

Fault Analysis

Handling method

Failure power on

Battery exhaustion

Replace the batteries

No measured value

Impact device cable failure

Replace the cable

 Keep it away from vibration, strong magnetic field, corrosive medium, dumpiness and dust. Storage



With original packing, transport is allowed on the third grade highway.

Material

Method

Impact device

D/DC

D+15CGEDL

Steel and cast

steel

HRC

20～68.5

19.3～

67.9

20.0～

69.5

22.4～70.7

20.6～

68.2

HRB

38.4～

99.6

47.7～

99.9

37.0～

99.9

HRA

59.1～

85.8

61.7～88.0

HB

127～

651

80～638

80～683

90～646

83～663

81～646

HV

83～976

80～937

80～996

84～1042

80～950

HS

32.2～

99.5

33.3～

99.3

31.8～

102.1

35.8～

102.6

30.6～

96.8

Cold work

tool steel

HRC

20.4～

67.1

19.8～

68.2

20.7～

68.2

22.6～70.2

HV

80～898

80～935

100～

941

82～1009

Stainless steel

HRB

46.5～

101.7

HB

85～655

HV

85～802

Grey cast iron

HRC

HB

93～334

92～326

HV

Nodular cast iron

HRC

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6.1 Impact Device Maintenance

clean the guide tube and impact body. When cleaning the guide tube, unscrew the support ring first,
then take out the impact body, spiral the nylon brush in counter-clock direction into the bottom of
guide tube and take it out for 5 times, and then install the impact body and support ring again.

6.2 Instrument Maintenance Program

be the invalidation of impacted ball top caused by abrasion. Changing the spherical test tip or
impact object should be considered.

adjust any fixedly assembled parts. Fill in and present the warranty card to us. The warranty service
can be carried on.

6.3 Fault Analysis & Evacuation

6.4 Notice of Transport and Storage Conditions

in ordinary temperature.

APPENDIX
Table 1

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HB

131～

387

127～364

HV

Cast aluminum

alloys

HB

19～164

23～210

32～168

HRB

23.8～

84.6

22.7～

85.0

23.8～

85.5

BRASS(copper-

zinc alloys)
HB

40～173

HRB

13.5～

95.3

BRONZE(coppe

r-aluminum/tin

alloys)

HB

60～290

Wrought copper

alloys

HB

45～315

Table 2

No.

Material

HLD

Strength σb(MPa)

1

Mild steel

350～522

374～780

2

High-Carbon steel

500～710

737～1670

3

Cr steel

500～730

707～1829

4

Cr-V steel

500～750

704～1980

5

Cr-Ni steel

500～750

763～2007

6

Cr-Mo steel

500～738

721～1875

7

Cr-Ni-Mo steel

540～738

844～1933

8

Cr-Mn-Si steel

500～750

755～1993

9

Super strength steel

630～800

1180～2652

10

Stainless steel

500～710

703～1676

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Table 3

Type of impact device

DC(D)/DL

D+15CG

E

Impacting energy

Mass of impact body

11mJ

5.5g/7.2g

11mJ

7.8g

2.7mJ

3.0g

90mJ

20.0g

11mJ

5.5g

Test tip hardness:

Dia. Test tip:

Material of test tip:

1600HV

3mm

Tungsten

carbide

1600HV

3mm

Tungsten

carbide

1600HV

3mm

Tungsten

carbide

1600HV

5mm

Tungsten

carbide

5000HV

3mm
synthetic
diamond

Impact device diameter:

Impact device length:

Impact device weight:

20mm

86(147)/

75mm 50g

20mm

162mm

80g

20mm

141mm

75g

30mm

254mm

250g

20mm

155mm

80g

Max. hardness of sample

940HV

940HV

1000HV

650HB

1200HV

Mean roughness value of

sample surface Ra:

1.6μm

1.6μm

0.4μm

6.3μm

1.6μm

Min. weight of sample:

Measure directly

Need support firmly

Need coupling tightly

>5kg

2～5kg

0.05～2kg

>5kg

2～5kg

0.05～2kg

>1.5kg

0.5～1.5kg

0.02～0.5kg

>15kg

5～15kg

0.5～5kg

>5kg

2～5kg

0.05～2kg

Min. thickness of sample
Coupling tightly
Min. layer thickness for
surface hardening

5mm

≥0.8mm

5mm

≥0.8mm

1mm

≥0.2mm

10mm

≥1.2mm

5mm

≥0.8mm

Size of tip indentation

Hardness
300HV

Indentation
diameter
Depth of
indentation

0.54mm

24μm

0.54mm

24μm

0.38mm

12μm

1.03mm

53μm

0.54mm

24μm

Hardness
600HV

Indentation
diameter
Depth of
indentation

0.54mm

17μm

0.54mm

17μm

0.32mm

8μm

0.90mm

41μm

0.54mm

17μm

Hardness
800HV

Indentation

diameter
Depth of
indentation

0.35mm

10μm

0.35mm

10μm

0.35mm

7μm

----0.35mm

10μm

Available type of impact
device

DC: Test hole
or hollow
cylindrical;
DL:Testslender
narrow groove
or hole

D+15: Test

groove or
reentrant
surface

C: Test
small,light,thi
n parts and
surface of
hardened
layer

G: Test large,
thick,heavy
and rough
surface steel

E: Test super
high hardness
material

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Table 4

No.

Type

Sketch of non-conventional

Supporting ring

Remarks

1

Z10-15

For testing cylindrical outside surface

R10～R15

2

Z14.5-30

For testing cylindrical outside surface

R14.5～R30

3

Z25-50

For testing cylindrical outside surface

R25～R50

4

HZ11-13

For testing cylindrical inside surface

R11～R13

5

HZ12.5-17

For testing cylindrical inside surface

R12.5～R17

6

HZ16.5-30

For testing cylindrical inside surface

R16.5～R30

7

K10-15

For testing spherical outside surface

SR10～SR15

8

K14.5-30

For testing spherical outside surface

SR14.5～SR30

9

HK11-13

For testing spherical inside surface

SR11～SR13

10

HK12.5-17

For testing spherical inside surface

SR12.5～SR17

11

HK16.5-30

For testing spherical inside surface

SR16.5～SR30

12

UN

For testing cylindrical outside

surface,radius adjustable R10～∞

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User Notes

 Damage caused by man-made or improper keeping;

 Self-dismantle or non-special repair shop dismantle;

 Do not follow the requirement of service registration or warranty expired;

 Consumable parts.



MITECH users have lifelong maintenance service

 Free maintenance, inspection, software upgrade and etc.
Add：Room E506B, YingChuangDongLi Park, 1# of ShangDi East Road,

Haidian District, Beijing, China

Post code：100085

Website：www.mitech-ndt.com

Email：[e-mail]

Tel：[phone]

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Warranty：

The product is guaranteed for one year since purchased. Log www.mitech-ndt.com or follow our

company official public platform to register for maintenance. Please fill the blanks as required, if the

product is not registered for maintenance, it will follow the date of manufacturer.

When applying for maintenance, please visit our official website, www.mitech-ndt.com or official

accounts, submit “online reporting to repair” sheet.

In accordance with the international relevant regulations, the following are not within the scope of free

warranty,

Service promise

：