Bms Bulut Makina HARTIP 3000+ User manual

HARTIP 3000+
PORTABLE HARDNESS TESTER
BMS Bulut Makina Sanayi ve Ticaret Ltd. Şti.
Kocaeli KOBİ Organize Sanayi Bölgesi
Köseler Mahallesi, 6.Cadde No:20/2 Dilovası / KOCAELİ
Tel: [phone]
Web: www.bulutmak.com e-mail: [e-mail]
OPERATION MANUAL

1
1LEEB HARDNESS TEST (DEFINITION) ................................................................................................................................... 3
NOTATION OF LEEB’S HARDNESS................................................................................................................................................ 3
2SPECIFICATIONS, FEATURES AND APPLICATIONS ............................................................................................................... 4
2.1 INTRODUCTION ...................................................................................................................................................................... 4
2.2 SPECIFICATIONS...................................................................................................................................................................... 4
2.3 FEATURES ............................................................................................................................................................................. 4
2.4 APPLICATIONS........................................................................................................................................................................ 4
3HARDNESS TESTER PARTS NAMES...................................................................................................................................... 5
3.1 MAIN BODY........................................................................................................................................................................... 5
3.2 TYPES OF IMPACT DEVICES ....................................................................................................................................................... 5
3.3 SPECIAL FEATURES OF IMPACT DEVICES ...................................................................................................................................... 6
3.4 INTERNAL STRUCTURE OF IMPACT DEVICES.................................................................................................................................. 6
4SYMBOLS AND ILLUSTRATIONS .......................................................................................................................................... 7
4.1 MEANING OF VARIOUS SYMBOLS .............................................................................................................................................. 7
4.2 MEASUREMENT AND CONVERSION TABLE ................................................................................................................................... 7
5PREPARATION BEFORE MEASURING .................................................................................................................................. 9
5.1 REQUIREMENTS TO THE SAMPLE ................................................................................................................................................ 9
5.2 REQUIREMENTS RELATED TO SAMPLE WEIGHT .............................................................................................................................. 9
REQUIREMENT ON THE SURFACE-HARDENED LAYER OF THE SAMPLE...................................................................................... 10
SAMPLES WITH CURVED SURFACES.......................................................................................................................................... 11
6OPERATION...................................................................................................................................................................... 12
6.1 FUNCTION OF KEY AND OPERATION DIAGRAM ............................................................................................................................ 12
6.1.1 Function of Key............................................................................................................................................................ 12
7OPERATION DIAGRAM ..................................................................................................................................................... 13
7.1 TURN ON/OFF THE INSTRUMENT ............................................................................................................................................ 14
7.2 HOME MENU ...................................................................................................................................................................... 14
7.3 LOAD DEFAULT .................................................................................................................................................................... 14
7.4 CALENDAR .......................................................................................................................................................................... 15
7.5 INFORMATION ..................................................................................................................................................................... 15
7.6 TEST MENU......................................................................................................................................................................... 15
7.7 PROBE TYPE ........................................................................................................................................................................ 16
7.8 MATERIALS ......................................................................................................................................................................... 16
7.9 HARDNESS SCALE ................................................................................................................................................................. 17
7.10 UPPER/LOWER LIMITS........................................................................................................................................................... 17
7.11 MEAN TIME ........................................................................................................................................................................ 18
7.12 CALIBRATION....................................................................................................................................................................... 18
7.13 CONFIGURATION MENU ........................................................................................................................................................ 19
7.14 BLUETOOTH DEVICE (OPTIONAL)............................................................................................................................................. 20
7.15 RF PORT (OPTIONAL)............................................................................................................................................................ 20
7.16 AUTO.PRINTING .................................................................................................................................................................. 20

2
7.17 BATTERY TYPE ..................................................................................................................................................................... 21
7.18 SOUND............................................................................................................................................................................... 21
7.19 DATABASE........................................................................................................................................................................... 21
7.20 SAVE EVERY-TEST.................................................................................................................................................................. 22
7.21 VIEW ................................................................................................................................................................................. 22
7.22 ERASE ALL........................................................................................................................................................................... 22
7.23 EXPORT ALL ........................................................................................................................................................................ 23
7.24 STATISTICAL ANALYSIS ........................................................................................................................................................... 23
7.25 LANGUAGE MENU ................................................................................................................................................................ 24
7.26 MEASURING PROCEDURE....................................................................................................................................................... 24
7.26.1 Turn on the tester ................................................................................................................................................... 24
7.26.2 Measuring with wireless probe (Optional).............................................................................................................. 25
8MAINTENANCE AND REPAIR ............................................................................................................................................ 26
8.1 MAINTENANCE OF IMPACT DEVICES ......................................................................................................................................... 26
8.1.1 Change Battery............................................................................................................................................................ 26
8.2 INTRODUCTION OF PC SOFTWARE............................................................................................................................................ 26
8.2.1 Connect PC and hardness tester.................................................................................................................................. 26
8.2.2 Driver installation........................................................................................................................................................ 26
8.2.3 Software Installation ................................................................................................................................................... 26
8.2.4 Start PC software ........................................................................................................................................................ 26
9OPTIONAL ACCESSORIES .................................................................................................................................................. 28
SUPPORT RINGS FOR IMPACT DEVICE D ................................................................................................................................... 28
9.1.1 Micro printer ............................................................................................................................................................... 28

3
1Leeb Hardness Test (definition)
An impact body with a spherical test tip made of tungsten carbide is propelled against the sample surface by a
spring force and then rebounds back. At a distance of 1mm from the sample surface, the impact and rebound
velocities of the impact body are measured by the following method: when passing through the coil in its coil
holder, a permanent magnet embedded in the impact body induces in the coil an electric voltage proportional to
the velocity of the magnet. Leeb hardness (HL) is expressed by
1000*
Vi
Vr
HL 
Where HL = Leeb Hardness
Vr= rebound velocity of the impact body
Vi= impact velocity of the impact body
The output voltage of the coil when the impact body passes through the induction coil is illustrated in the
following figure:
A Leeb’s Hardness Tester measures the hardness of sample material in terms of Hardness Leeb (HL), which can
be readily converted into other Hardness units (Rockwell B and C, Vickers, Brinell and Shore D, etc.)
Notation of Leeb’s Hardness
When measuring the hardness of a sample material using the traditional static hardness testing method, a change
of applied pressure will result in a change in the hardness reading. This will also happen during a Leeb’s Hardness
test when one changes the impact device. In hardness measurement of the same test sample with different impact
devices, the Leeb’s hardness values obtained will vary.
For example: 720HLD≠720HLC
Because different converting curves are obtained from different impact devices, when converting hardness HL
into another hardness values, the notation for the converted hardness value should include the impact device
used.
For example:
Hardness HV converted from hardness HL using impact device D+15 should be written as 22, 8 HV LD+15.
Where: 22=Hardness value HL
8=Hardness value HV
L=Leeb’s Method
D+15=Impact device
Hardness HRC converted from hardness L using impact device D should be written as 35, 9 HRCLD.
Where: 35=Hardness value HL
9=Hardness value HRC
L=Leeb’s Method
D=Impact device

4
2Specifications, Features and Applications
2.1 Introduction
HARTIP 3000+ is a new generation of Leeb hardness tester with more advanced technology and features. The
tester applies our new patent dual-coil sensor technology which makes the tester more accurate than old
previous model. All impact devices (probes) do not need to set up impact direction. HARTIP 3000+ can work with
both analogy impact device and wireless RF probe.
The measuring values can be downloaded to PC and printer by wireless or by cable.
The HARTIP 3000+ also can be powered by USB power supply without battery via PC cable.
2.2 Specifications
Principle Leeb hardness measurement
Accuracy ±0.3% @ HL=800
Repeatability ±2HL
Display resolution 1HL, 0.1HRC
Display 2.8” 320 x 240 TFT color LCD - suitable under sunshine
Hardness scale HL/HRC/HRB/HB/HV/HS/HRA/ MPa
Measuring range HL100-960 / HRC0.9-79.2 / HRB1.0-140 / HB1-1878 / HV1-1698 / HS0.5-
1370 / HRA1.0-88.5 / MPa(rm)1-6599N/mm2
Impact device standard cable probe D
DC / DL / D+15 / G / C / E
Materials and curves 12 common metal materials
Indicator Upper limit / Lower limit / low battery / buzzer warning / date and time
Communication interface USB / RS232
Continuous working time >40 hours
Power supply 1.5V AA alkaline battery x 4 / 1.2V nickel-hydrogen rechargeable battery x
4 / 3.7V Li-ion rechargeable battery x 4 / USB power supply
Working environment -10C ~ + 45C
Dimension 195x84x38mm
Weight 550g (battery not included)
Standard Conforming to ASTM A956, DIN 50156, GB/T 17394-1998
2.3 Features
No need to setup different impact direction
Higher accuracy with dual-coil technology
TFT large color LCD with pixel 320 x 240
Multi-color style –suitable under sunshine
Real date and time
Calibration by user
2.4 Applications
Hardness tests on installed machines or steel structures: heavy and large work-pieces or permanently
installed system parts.
Rapid testing of multiple measuring areas for examination of hardness variations over larger regions.
Hardness measurements for produced parts on production line.
Identifying metallic material stored in warehouse.
Ineffectiveness analysis of permanent parts, pressure -vessels, turbo generators, etc.

5
3Hardness Tester Parts Names
3.1 Main body
3.2 Types of Impact Devices
1 Loading tube
2 Guiding tube
3 Coil holder with coil
4 Release button
5 Connecting cable leading to the indicating device with coil plug
6 Large supporting ring
7 Impact body

6
3.3 Special Features of Impact Devices
Type
Brief description
D
Universal standard unit for majority of hardness testing assignments.
DC
Extremely short impact device, other specs identical with type D.
Application:
- highly confined spaces
- holes and cylinders
- internal measurements on assembled machines
D+15
Slim front section
Application:
- grooves and recessed surfaces.
DL
Extremely slim front section
Application:
- extremely confined spaces
- base of grooves
C
Reduced impact energy ( compared with type D).
Application:
- surface hardened components, coatings
- minimum layer thickness: 0.2mm.
- thin walled or impact sensitive components (small measuring indentation).
E
Synthetic diamond test tip (approx.5000 HV).
Application:
- extremely high hardness measurement such as high carbon steel up to 1200 HV
G
Increased impact energy(approx. 9 times that of type D)
Application:
- Brinell hardness range only
- heavy cast and forged parts with lower demands on surface finish.
3.4 Internal Structure of Impact Devices
Status: impact spring stressed
1 Loading tube
2 Guiding tube
3 Coil with holder
4 Release button
5 Connection cable (3-pole)
6 Large support ring
6a Small support ring
7 Impact body
8 Spherical test tip
9 Impact spring
10 Loading spring
11 Catch chuck
12 Material under test
Impact device model DC is not equipped with a loading tube; since it is loaded by means of a separate stick.
Impact devices should not be disassembled; otherwise misalignments in the spring system and the transmitter
will occur.

7
4Symbols and Illustrations
4.1 Meaning of Various Symbols
Symbol
Meaning
LD
LDC
LG
LC
LD15
LE
LDL
Leeb hardness value obtained with impact device D
Leeb hardness value obtained with impact device DC
Leeb hardness value obtained with impact device G
Leeb hardness value obtained with impact device C
Leeb hardness value obtained with impact device D+15
Leeb hardness value obtained with impact device E
Leeb hardness value obtained with impact device DL
Symbol
Meaning
HL
HRC
HRB
HB
HV
HS
HRA
MPa
Leeb hardness value
Rockwell C hardness value
Rockwell B hardness value
Brinell hardness value
Vickers hardness value
Shore hardness value
Rockwell A hardness value
Intensity of tension
4.2 Measurement and Conversion Table
Range for measurement and conversion:
PROBE D/DC HLD: 100-960
MATERIALS
HRC
HRB
HB
HV
HS
HRA
MPa(N/mm²)
STEEL/CAST STEEL
1-74.7
1.2-140
28-1027
45-1230
4.0-112
7-88.5
118-3315
ALLOY TOOL STEEL
0.9-78.7
*
15-1878
32-1698
5.5-128
*
79-6599
STAINLESS STEEL
3.7-62.4
8.3-101.7
85-655
36-802
6-131
*
108-1725
LAMELLAR IRON
21-59
24-100
35-570
90-698
6-83
*
*
NODULAR IRON
21-60
24-100
62-857
96-724
8-90
*
*
CAST ALUMINUM
1-48
24-85
19-445
22-193
3-64
*
129-2618
BRASS
1-53
1.5-99.6
32-477
29-495
5-65
32-76
258-4146
BRONZE
1-56
14-100
15-505
11-535
2-68
29-76
190-1860
WROUGHT COPPER
1-54
14-100
39-569
38-590
6-73
*
*
FORGING STEEL
1-72
*
50-1060
48-1110
7-103
*
200-3750
ROLLING STEEL
1-72
*
82-1380
83-1440
14-117.8
*
310-4860

8
PROBE DL DL: 100-980
MATERIALS
HRC
HRB
HB
HV
HS
HRA
MPa(N/mm²)
STEEL/CAST STEEL
1-73
1.5-109.5
1-1026
1-1167
0.5-100
*
24-3517
ALLOY TOOL STEEL
2.4-79.2
*
5-1489
2.0-1556
1-122
*
38-5063
STAINLESS STEEL
*
*
*
*
*
*
*
LAMELLAR IRON
*
*
*
*
*
*
*
NODULAR IRON
13-78.4
38-110
50-1271
5-1160
1.5-102
*
*
CAST ALUMINUM
1-57
1.6-120
3-736
12-645
2.5-74
*
*
BRASS
*
*
*
*
*
*
*
BRONZE
*
*
*
*
*
*
*
WROUGHT COPPER
*
*
*
*
*
*
*
FORGING STEEL
*
*
*
*
*
*
*
ROLLING STEEL
*
*
*
*
*
*
*
PROBE E HLE: 100-960
MATERIALS
HRC
HRB
HB
HV
HS
HRA
MPa(N/mm²)
STEEL/CAST STEEL
6.3-78.5
3-140
24-1144
24-1369
3.6-121
1-88
54-3800
ALLOY TOOL STEEL
10.5-83.2
*
8-1840
24-1659
10-1370
*
1-1460
STAINLESS STEEL
*
*
*
*
*
*
*
LAMELLAR IRON
*
*
*
*
*
*
*
NODULAR IRON
*
*
*
*
*
*
*
CAST ALUMINUM
*
*
*
*
*
*
*
BRASS
*
*
*
*
*
*
*
BRONZE
*
*
*
*
*
*
*
WROUGHT COPPER
*
*
*
*
*
*
*
FORGING STEEL
*
*
*
*
*
*
ROLLING STEEL
1.4-81
*
98-1529
68-1541
16-124
*
262-5274
PROBE G HLG: 100-900
MATERIALS
HRC
HRB
HB
HV
HS
HRA
MPa(N/mm²)
STEEL/CAST STEEL
*
1-133
10-946
*
*
*
*
ALLOY TOOL STEEL
*
*
19-804
*
*
*
*
STAINLESS STEEL
*
*
10-844
*
*
*
*
LAMELLAR IRON
*
*
5-804
*
*
*
*
NODULAR IRON
*
*
5-998
*
*
*
*
CAST ALUMINUM
*
1-120
8-635
*
*
*
*
BRASS
*
*
*
*
*
*
*
BRONZE
*
*
*
*
*
*
*
WROUGHT COPPER
*
*
*
*
*
*
*
FORGING STEEL
*
*
*
*
*
*
*
ROLLING STEEL
*
*
*
*
*
*
*

9
PROBE C HLC: 100-960
MATERIALS
HRC
HRB
HB
HV
HS
HRA
MPa(N/mm²)
STEEL/CAST STEEL
5-72.5
*
23-953
23-1125
5-111
*
*
ALLOY TOOL STEEL
4-77.2
*
*
43-1566
*
*
*
STAINLESS STEEL
*
*
*
*
*
*
*
LAMELLAR IRON
*
*
*
*
*
*
*
NODULAR IRON
*
*
*
*
*
*
*
CAST ALUMINUM
*
*
*
*
*
*
*
BRASS
*
*
*
*
*
*
*
BRONZE
*
*
*
*
*
*
*
WROUGHT COPPER
*
*
*
*
*
*
*
FORGING STEEL
*
*
*
*
*
*
*
ROLLING STEEL
*
*
*
*
*
*
*
PROBE D+15 HLD+15: 100-960
MATERIALS
HRC
HRB
HB
HV
HS
HRA
MPa(N/mm²)
STEEL/CAST STEEL
1-69.8
*
12-999
12-1221
2-112
*
*
ALLOY TOOL STEEL
1.3-78
*
*
2.0-1485
*
*
*
STAINLESS STEEL
*
*
*
*
*
*
*
LAMELLAR IRON
*
*
*
*
*
*
*
NODULAR IRON
*
*
*
*
*
*
*
CAST ALUMINUM
*
*
*
*
*
*
*
BRASS
*
*
*
*
*
*
*
BRONZE
*
*
*
*
*
*
*
WROUGHT COPPER
*
*
*
*
*
*
*
FORGING STEEL
*
*
*
*
*
*
*
ROLLING STEEL
*
*
*
*
*
*
*
5Preparation before Measuring
5.1 Requirements to the sample
Surface temperature of the sample should be lower than 120 C.
The sample must feature a metallic smooth and ground surface, in order to eliminate erroneous measurements
caused by coarse grinding or lathe scoring. Roughness of the finished surface should not exceed values shown in
following table:
Types of impact devices
Max surface roughness of sample Ra
D/ DC, D+15,DL,E
G
C
2μm
7μm
0.4μm
5.2 Requirements related to sample weight
For samples weighing over 5 kg and of compact shape, no support is needed.
Samples weighing between 2-5 kg, and also for heavier samples with protruding parts or thin walls, should be
placed on a solid support in such a manner that they do not bend or move by the impact force.
Samples weighing less than 2 kg should be firmly coupled with a stable support weighing over 5 kg.
For coupling purposes,

10
The coupling surface between the sample and base plate should be flat, plane parallel and ground.
A proper thin layer of coupling paste is to be applied to the contact surface of the sample.
The sample should be firmly pressed against the base plate surface by moving it with a circular motion.
The direction of impact should be perpendicular to the coupling surface.
For the coupling operation, the following prerequisites must be fulfilled:
Contact surface between the sample and the base plate must be flat, plane parallel and ground.
The direction of the test impact must be perpendicular to the coupled surface.
Minimum thickness of the sample for coupling under various impact devices are shown in following table:
Types of impact devices
Minimum thickness
D/DC,D+15,DL,E
3mm
G
10mm
C
1mm
Proper Coupling:
Proper coupling requires a little experience. Insufficiently coupled samples produce large variation among
measurements and abnormally low L-values while the operation is characterized by a rattling noise upon impact
of the test tip.
Examples for coupling a test piece with a base plate:
Requirement on the surface-hardened layer of the sample
Surface-hardened steels, especially case-hardened steels, produce L-values which are too low when case-
hardening depth is small because of their soft core .When measuring with impact devices D, DC, D+15, DL or E,
Application of the coupling paste
(As thin as possible).
Mutual rubbing of both parts while firmly press the sample against the
base plate.
A particular advanced of coupling is the possibility of obtaining a very
uniform, rigid connection between the sample and the support, totally
eliminating stresses at the sample surface. The resulting variation in
measured values is very low.

11
depth of the hardened layer should be no less than 0.8 mm. When measuring with impact device C, the depth of
the hardened layer should be no less than 0.2 mm.
Types of impact devices
Min. layer thickness for surface hardening
D/DC, D+15,DL,E
0.8mm
C
G
0.2mm
1.8mm
The test sample should not be magnetic.
For test sample of curving surface, where the radius of curvature R is less than 30mm, a small support
ring should be applied.
Requirement on sample weight using various impact devices
Types of impact
devices
Classification of samples
Heavy-weight
medium-weight
light-weight
D/DC, D+15,DL,E
>5kg
2 - 5kg
0.05 –2kg
G
>15 kg
5 - 15kg
0.5 –5kg
C
>1.5kg
0.5 - 1.5kg
0.02 - 0.5kg
When measuring hardness with HARTIP 3000+, the following has to be noticed: Despite the low mass of the
impact body and low impact energy, a relatively large impact force within short duration is generated when the
impact body hits the measuring surface.
Types of impact devices
D/DC, D+15, DL, E
G
C
Max. impact force
900N
2500N
500N
No particular precautions are necessary for heavy-weight samples with compact shape.
Smaller and lighter samples or workpieces may yield or flex under this force, producing too-low L-values with
excessively large variation. Even with big or heavy workpieces, it is possible for thin-wall regions or thinner
protruding parts to yield upon impact. Depending on the frequency of the resilient yielding action, the measured
L-value may be abnormally low or high. Under many situation, potential problems can be checked in the following
manner:
a) Medium-weight samples and also heavier samples with protruding parts or thin walls should be placed on a
solid support in such a manner that they do not move or bend during the test impact.
b) Light-weight samples should be rigidly “coupled” with a non-yielding support such as a heavy base plate.
Clamping in a vice is of no value, since the samples become exposed to stress, and complete rigidity can never be
attained. Consequently, measured L-values would be too small and show excessive variations.
Samples with Curved Surfaces
Impact testers only work properly if the impact body has a certain position in the guiding tube at the moment of
impact. In the normal position when testing flat and convex-cylindrical samples (such as round samples), the
spherical test tip is located exactly at the end of the guiding tube.
However, when testing spherically or cylindrically shaped concave surfaces, the impact body remains further
within the guide tube or protrudes further therefore. Thus, with such types of curved surfaces, it should be
observed that the radius of curvature R is larger than the values indicated in the following Figure.
Curved surfaces should always be tested with the small support ring.

12
Impact device types D/DC, D+15, C and E Rmin=30mm
Impact device type G Rmin=50mm
For impact devices D, DC, D+15, C and E, special support rings are available to accommodate smaller radii on
convex or concave surface.
Types of impact devices
Support Ring
Radius for Curved Surface (mm)
D/DC, D+15,C,E
Standard support ring
>60
Small support ring
60-30
C
Standard support ring
>100
Small support ring
100-50
6Operation
6.1 Function of Key and operation diagram
6.1.1 Function of Key
Power
Press it shortly: to switch the tester on.
Press and hold it: to switch the tester off.
Bluetooth
Press it shortly: to enable Bluetooth function (Optional)
Lightness
Press it shortly: to adjust the lightness
Data Review
Press it shortly: to enter data review mode
Display
Press it shortly: to switch measuring modes

13
Test Menu
Press it shortly: to enter test menu
Upward
Increase
Press it shortly: to move the cursor up
Press it shortly: to increase current number
Downward
Decrease
Press it shortly: to move the cursor down.
Press it shortly: to decrease current number
Leftward
Press it shortly: to move the cursor left
Rightward
Press it shortly: to move the cursor right
Delete
Back to measuring mode
Press it shortly: to delete data
Press it shortly: to go back to measuring mode
Enter
Back to measuring mode
Press it shortly: to confirm.
Press it shortly: to go back to measuring mode
7Operation Diagram

14
7.1 Turn On/Off the Instrument
Press shortly to turn on the instrument, then the tester will enter measuring mode, Press and hold
to turn off the tester.
Press to switch different measuring modes.
7.2 Home Menu
Press to enter test menu and then press to enter home menu. Press or to select
different items. Press to enter. After adjustment, press to confirm. Press or to return
to Measuring screen.
7.3 Load Default
Press to enter test menu and then press to enter home menu. Press or to select Load
Default. Press to enter. Select “ON” and then press to load default setting. Press to go back
to Home menu, or press to return to Measuring screen.


15
7.4 Calendar
Press to enter test menu and then press to enter home menu. Press or to select
Calendar. Press to enter. Select Time / Date / Format and press to adjust. Press to go back
to Home menu, or press to return to Measuring screen.

7.5 Information
Press to enter test menu and then press to enter home menu. Press or to select
Information. Press to show information page. Press to go back to Home menu, or press to
return to Measuring screen.

7.6 Test Menu
After starting, press to enter test menu. Press or to select the item. Press to enter
selected item. After adjustment, press to confirm. Press to go back to Test menu, or press to
return to Measuring screen.

16
7.7 Probe Type
Press to enter test menu. Press or to select Probe type, then press to enter. Press
or to select suitable Probe type, press to confirm. You may select “D→DL→D15→G→C→E”
probe. Press to go back to Test menu, or press to return to Measuring screen.

Note: Please select D if you use DC probe.
7.8 Materials
Press to enter test menu. Press or to select Materials, then press to enter. Press
or to select suitable Material, there are 12 types of material, press to confirm selection. Press
to go back to Test menu, or press to return to Measuring screen.

Note: M1, M10, M12 are all steel, and the difference between them: the conversion of M1 Hardness Unit follows
the corresponding international standard; the conversion of M10 Hardness Unit follows the corresponding state
standard (forged steel); the conversion of M12 Hardness Unit follows the corresponding state standard (steel
rolling). There are some numerical differences between the three standards. The user should select the proper
one.

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7.9 Hardness Scale
Press to enter test menu. Press or to select Hardness Scales, then press to enter.
Press or to select suitable Hardness Scale, press to confirm selection. Press to go
back to Test menu, or press to return to Measuring screen.

7.10 Upper/Lower Limits
Press to enter test menu. Press or to select Limits, then press to enter. Press
to go back to Test menu, or press to return to Measuring screen.

 
Select “On” to enable pre-set Upper/Lower Limit, and display “ ” in Measure screen. After enabling, the Voice
Prompt is enabled by default. After overrun, prompt three sounds. If the measurement is above the Upper Limit,
“△” displays next to the readings. If the measurement is under the Lower Limit, “▽”displays next to the readings.
Select “Off” to disable Upper/Lower Limit prompt. Select “Upper” or “Lower” to adjust.
The Upper Limit must be higher than the Lower Limit, otherwise, the settings are invalid.

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The settings of Upper/Lower Limit will impact the statistics of the qualified rate. Any value overrun is deemed
as disqualified, otherwise, it is deemed as qualified.
7.11 Mean Time
Press to enter test menu. Press or to select Mean Time, then press to enter. Press
or to select suitable times, then press to confirm. Press to go back to Test menu, or
press to return to Measuring screen.

7.12 Calibration
Press to enter test menu. Press or to select Calibration, then press to enter. Select
“ON” to enable Calibration mode, then select “Adjust” to enter adjustment page. Press or to adjust
the value. After adjustment, press to confirm. Press to go back to Test menu, or press to
return to Measuring screen.

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 
 
On: To enable / disable the calibration.
Before calibration, please load factory default settings first (refer to 7.3 Load Default), then select calibration
menu, then adjust value according to the accuracy, finally press to accept changes. After Calibration is done,
the symbol will be displayed at the top line of the screen.
Note: before formal measuring using the instrument, check if the calibration is correct.
Note: if the calibration value is set to 0, the Calibration cannot be enabled.
Note: Calibration is only a temporary way to ensure measurement accuracy. It is not recommended conduct
calibration frequently to ensure accuracy of the instrument. For permanent calibration, please contact the
manufacturer.
7.13 Configuration Menu
Press to enter test menu and then press to enter Configuration menu. Press or to
select different items. Press to enter. Press to go back to Configuration menu, or press to
return to Measuring screen.