sauter SAUTER HMO User manual

Sauter GmbH
Ziegelei 1
D-72336 Balingen
e-mail: [e-mail]
Phone : +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.sauter.eu
Instruction manual mobile Leeb
hardness tester
SAUTER HMO
Version 2.0
04/2020
GB
HMO-BA-e-2020
PROFESSIONAL MEASURING

2 HMO-BA-e-2020
GB
SAUTER HMO
V. 2.0 04/2020
Instruction manual mobile Leeb hardness tester
Thank you for purchasing the mobile digital Leeb impact hardness tester from
SAUTER. We hope that you will be very satisfied with the high quality of this device
and its extensive functionality. For any questions, wishes and suggestions we are at
your disposal.
Table of contents:
1Before commissioning.................................................................................. 3
2Introduction.................................................................................................... 3
2.1 Measuring principle.................................................................................................................. 3
2.2 Structure.................................................................................................................................... 4
2.3 Technical data........................................................................................................................... 5
2.4 Area of application ................................................................................................................... 5
3Test procedure............................................................................................... 6
3.1 Preparation of the device ........................................................................................................ 6
3.2 Preparation of the sample ....................................................................................................... 6
3.3 Test execution .......................................................................................................................... 8
3.4 Browsing ................................................................................................................................... 8
3.5 Print............................................................................................................................................ 9
4Setup............................................................................................................... 9
4.1 Settings in the main mask....................................................................................................... 9
4.2 Menu settings ......................................................................................................................... 10
5Care and maintenance................................................................................. 14
5.1 Periodic maintenance ............................................................................................................ 14
5.2 Store......................................................................................................................................... 14
5.3 Calibration............................................................................................................................... 15
6Annex............................................................................................................ 16
6.1 Conversion area ..................................................................................................................... 17
6.2 Scope of delivery.................................................................................................................... 17

HMO-BA-e-2020 3
1 Before commissioning
Before putting the device into operation, check the delivery for any transport damage
to the packaging, the plastic case and the device itself. Should this be the case,
SAUTER must be contacted immediately.
2 Introduction
2.1 Measuring principle
The measuring principle for the measurements carried out with this dynamic impact
hardness tester is physically quite uncomplicated. An impact body with a hard metal
tip is hurled against the surface of the test object by the spring force. When the impact
body hits the surface, it can be damaged, which ultimately leads to a loss of kinetic
energy.
This energy loss is calculated on the basis of velocity measurements, at a certain point
in time when the impactor is at a certain distance from the surface, both in the rebound
and impact phases.
The fixed magnet in the impact body generates an induction voltage in the simple wire
coil of the impact tester. The voltage of the signal is proportional to the speed of the
impact body. The signal is processed by the electronics so that the hardness value can
be read on the display and then stored.
English
German
Impact phase
Impact phase
Rebound phase
Rebound phase
Time
Time

4 HMO-BA-e-2020
2.2 Structure
Display
Impact device (type D)
The display can be connected to almost any type ofLeeb rebound sensor. The rebound
sensor is detected automatically.
Take the rebound sensor type D (standard sensor). The description of other types can
be found in the appendix (chapter 5).
Display
The rebound hardness tester is equipped with a large LCD touch display.
1. Rebound sensor type: automatically detected or manually adjusted
2. materials: Material from which the sample is made
3. Battery indicator
4. Tolerance value
5. Conversion value
IMPORTANT: if this symbol is displayed "---", it means that the conversion is
out of range
6. Impact direction
1. impact body
2. support ring
3. bobbin
4. cable
5. pawl clamping device
6. loading pipe
7. release button
1. impact device socket 2. LCD display 3. mini-
USB socket 4. charging socket 5.ON-OFF button
3
4
1
2
5
Impact device Type
Material
Hardness value
Battery indicator
Impact direction
Conversion value
Impact counter
Time / Date
Lighting
Menu button
Statistics:
mean
value and
range
Tolerance
alarm

HMO-BA-e-2020 5
7. Hardness value: measured hardness value L (Leeb)
8. Statistical values: X: Average value S: Range
9. Statistical data: Number of strokes in statistical data
10.Impact counter: number of impacts performed
11.Lighting: Switching on and off by touch
12.Menu: Fade in and out of the setting mask by touch
13.Date / Time: the display of real time and date
2.3 Technical data
▪Display range HL: 0～999HLD
▪accuracy: ±6 HL
▪Display: large LCD display, illumination,
Touch display
▪Internal data memory: 500 measured values
▪Resolution: 1 (for HL, HV, HB, HSD, MPa); 0,1 (for
HRC, HRB)
▪Battery: rechargeable Li-Ion
▪Operating temperature: 0°C~+50°C (32°F~122°F)
▪Storage temperature: -10°C~+60°C (14°F~140°F)
▪Dimensions: 130 x 87 x 28 mm
▪Weight: 240g
2.4 Scope of application
•Suitable for all metals, ideal for testing production quality
•Optimally suited for testing heavy, large or already installed parts
•Suitable for carrying out measurements in places that are difficult to access
•Automatic adjustment of the impact direction
•Optimal tool for selective testing and acceptance control
•Simple operation and high measuring accuracy for measurements on round
surfaces (R > 10 mm)
•Metal production and processing, automotive industry and transport,
engineering and power plants, refineries, petrochemical industry, aerospace
industry, shipbuilding industry, metal construction, test and laboratory services

6 HMO-BA-e-2020
3 Test procedure
3.1 Preparation of the device
Connect
Connect the display with the impact device with the signal cable.
Charge battery
Charge the device before first use.
Switch on
Switch on the device by pressing the button.
Calibration
Before using the test block for the first time, calibrate the instrument (see 4.3
"Calibration")
3.2 Preparation of the sample
Unsuitable material samples can cause measuring errors. Therefore, test preparation
and execution should be carried out according to the sample properties. The
preparation of the sample and its surface should meet these basic requirements:
During the surface preparation of the sample, its surface should not be exposed to
thermal cooling or heating.
The test surface should be flat and have a metallic gloss. There must be no oxide
layers or other contamination.
Signal cable
Figure 2-1

HMO-BA-e-2020 7
Roughness of the test surface
The sample should have sufficient mass and stiffness. If not, the impact may cause a
displacement or movement, which may lead to a significant measurement error.
As a general rule, if the weight of the sample is 5 kg or more, testing can be performed
directly.
Sample thickness
The thickness of the sample as well as the thickness of the homogeneous layer (or the
hardening layer of the surface) should have a sufficient material thickness.
If the sample surface is not flat, the radius of the test area should not be less than 30
mm (50 mm for type G). If it is not specified, an appropriate support ring should be
used.
The sample should have no magnetic properties.
English
German
Direct measurement
Direct measurement
Clamping
measurement
Clamp measurement
Coupling
measurement
Coupling
measurement

8 HMO-BA-e-2020
3.3 Test execution
Shop
Load the impact device by pushing the
loading tube forward.
Positioning
Then position the impact device and hold it
on the surface of the sample at the desired
measuring point. The direction of impact
shall be perpendicular to the surface of the
sample.
Impact (measurement)
Perform the measurement by pressing the release button. The measured hardness
value is displayed immediately.
Reading test results
Read the measurement result of the test from the display.
Note:
Normally, 5 individual measurements are made at each measuringpoint of the sample.
The value range (difference of the maximum and minimum value) should be less than
15 HL. The distance between any two measuring points should be ≥ 3mm; the distance
between the point of impact and the edge of the sample should be ≥ 3mm.
3.4 Browse
The hardness tester enables hardness values to be stored, which can then be
searched after the measurement has been completed. To do this, enter the menu to
select the desired browse mode (see par. 3.2.3 for detailed information).
English
German
Loading
Shop
Locating
Positioning
Impacting
Impact
Loading Locating
Impacting
Figure 2-7

HMO-BA-e-2020 9
3.5 Print
The hardness tester can be connected to a wireless printer to
print a test report.
Place the printer near the tester (at a distance of up to 2 m)
and switch it on.
A test report is shown in Fig. 2-7. Detailed report
information can be defined in the respective menu (see par.
3.2.2)
Fig. 2-6
English
German
Set type of impact device
Setting the type of impact device
Set material
Set material
Set limit value
Set limit value
Set impact direction
Setting the impact direction
Turn on/off backlight
Lighting ON / OFF
Enter menus
Call up the menu
4 Setup
The hardness tester is equipped with a touch display and most settings can be made
directly from the main screen. Some functions require calling up the respective menu
masks to make the desired settings or for operating purposes.
4.1 Settings in the main mask
The hardness tester is equipped with a touch display and the most common test
parameters can be set directly in the main mask (Fig. 3-1).

10 HMO-BA-e-2020
4.2 Menu settings
To call up the desired menu masks, the menu in the main mask must be activated.
In the respective menu:
Press the "△" or "▽" button to scroll up or down the page
press the Back key in the upper menu or return to the main screen.
Test settings
Material group
The "Material group" function allows you to select materials to be tested. It only
determines the conversion to other hardness scales. If only the Leeb hardness value
is required, it can be disregarded.
If the material is not specified in the menu, the user must familiarise himself with the
operating instructions in order to select a comparable type of material.
Impact direction
Test
setting
Material group
System
settings
Fabric Settings
Impact direction
Automatic printing ON/OFF
Scale
Gross error ON/OFF
Limit values
Key tone ON/OFF
Statistics
Alarm ON/OFF
Workpiece
Language: EN
Pressure
setting
Positions
Date / Time
Printing the memory
contents
Lighting duration
Print all
Calibration
Test calibration
Memory
Search all
Touch Calibration
Browse Selected
Information
upload data
Delete selected
ones
Delete All
Fig. 3-2
→ →
Fig. 3-3