Sauter HN-D User manual

Sauter GmbH

Ziegelei 1

D-72336 Balingen

e-mail: info@kern-sohn.com

Phone : +49-[0]7433- 9933-0

Fax: +49-[0]7433-9933-149

Internet: www.sauter.eu

Instruction manual mobile Leeb

hardness tester

SAUTER HN-D

Version 2.0

04/2020

HN-D-BA-d-2020

PROFESSIONAL MEASURING

2 HN-D-BA-e-2020

SAUTER HN-D

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

2Summary ........................................................................................................ 3

2.1 Application area Measuring principle .................................................................................... 3

2.2 Hardness value "L.................................................................................................................... 4

2.3 General characteristics............................................................................................................ 4

2.4 Scope of application ................................................................................................................ 4

2.5 Application: Primary industries.............................................................................................. 5

3Technical execution....................................................................................... 5

4Device view .................................................................................................... 5

5Check the supplied accessories................................................................... 5

6Instructions .................................................................................................... 6

6.1 Keys and their functions.......................................................................................................... 6

6.2 LCD display............................................................................................................................... 7

6.3 Settings ..................................................................................................................................... 7

6.4 Format of the stored data...................................................................................................... 10

6.5 Backlit display ........................................................................................................................ 10

6.6 Automatic switch-off.............................................................................................................. 10

6.7 Recharge ................................................................................................................................. 10

7The endurance test...................................................................................... 11

7.1 Check preset........................................................................................................................... 11

7.2 Preparation of the test piece................................................................................................. 11

8Problems and finding solutions ................................................................. 12

9Service and maintenance............................................................................ 13

9.1 Maintenance and care of the rebound sensor..................................................................... 13

9.2 Procedures for maintenance................................................................................................. 13

HN-D-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.

Cautions

Please read the following carefully first:

1. the complete device must not be immersed in water or exposed to rain, which could

cause unforeseeable damage, the battery or the display could be destroyed

2. if the device is not used for a longer period of time, it should be stored in a dry and

cool place, preferably in its original packaging. The ambient temperature should be in

the range of -30°C to +80°C and the relative humidity (RH) 5% to 95%.

2 Summary

2.1 Application area Measuring principle

When the test is performed, a rebound body with a tungsten carbide test tip is driven

with spring force against the surface of the test object from which it rebounds. The

impact and rebound velocities are measured in the following manner: A fixed magnet

in the rebound body generates an induced voltage inthe simple wire coil of the rebound

body during the forward and backward movement. The voltage of the signal is

proportional to the speed of the rebound sensor. The signal processing by the

electronics ensures that the hardness value L can be read on the display and stored.

Modern electronics with energy-saving features ensure a long service life of the

hardness tester.

Figure

The LCD display shows how the HN-D is designed (configured) for the test. Various

function keys allow a quick change of the test settings. No subjective measurement

errors are possible, as the device has a high repetition frequency of the measurement

results. Internal self-diagnostics with error messages ensure a reliable measurement

4 HN-D-BA-e-2020

result. Readings can be automatically deleted from the internal memory or directly

forwarded to a printer. The PC evaluation software enables data analysis.

These conversions to other hardness scales (HRC, HRB, HB, HV, HSD etc.) are

programmed into the electronics and can be shown directly on the display as test

results. All data are stored in the original L-scale to eliminate possible errors with other

conversions.

2.2 Hardness value "L

This value was introduced to measurement technology in 1978 by Dr. Dietmar Leeb. It

represents the quotient of the impact speed of the rebound sensor and the rebound

speed, multiplied by 1000.

Harder materials produce a higher rebound speed than less hard materials. With

reference to a certain group of materials (e.g. steel, aluminium etc.) the L-value

represents a direct hardness measurement value and is also used as such.

Comparison curves with standard static hardness values have been set up for the most

common materials (Brinell, Vickers, Rockwell C, B, Shore D). This enables the L-

values to be converted to the corresponding other hardness values.

With the HN-D hardness tester such hardness values can be shown directly in the

hardness scales HRC, HRB, HB, HV, HSD on the display.

2.3 General characteristics

- This is a highly advanced measuring device (rebound sensor D is integrated): no

cables

- High measuring accuracy (± 4 HL) in each rebound direction (360°) automatically

compensated

- Integrated display for measuring results with conversion to all common hardness

scales.

- Large, high-contrast display for optimal visibility in all conditions.

- Easy to calibrate

- Full USB communication with PC possible, internal data storage with date and time.

- Rechargeable Li-ion battery to be charged through the USB port.

- Intelligent "sleep" mode

2.4 Scope of application

- suitable for all metals

- suitable for testing heavy, large or already installed parts on site

- handy to get to test positions that are difficult to access or limited

-automatic compensation of the alignment of the rebound sensor

- excellent for material selection and acceptance tests

HN-D-BA-e-2020 5

2.5 Application: Primary industries

- Metal production and development

- Self-propulsion and transport

- Machinery industry & power plants

- Oil industry, chemical industry, refineries

- Aviation & Shipbuilding

- Metal constructions

- Test operations & laboratories

3 Technical execution

- Display range: 170 to 9 HLD

- Accuracy: ±4 HL (at 800 HLD)

- Measuring direction: all directions possible

- LCD: large, (128 x 64 dot) backlit LCD

- Data memory: 500 measuring groups

- Measurement results can be automatically converted

will be in: HRC, HRB, HB, HV, HSD

- Impact energy: 11N

- Weight of the rebound body: 5,5 g

- diameter of the test tip: 3mm

Material of the test tip: tungsten carbide

Hardness of the test tip: ≥ 1600 HV

- Power source: Li-ion rechargeable battery

- Charger: DC 5V/500mA or USB connector socket

- Maximum continuous operating time: approx. 16 hours

- Operating temperature: -10°C to +60°C

- Air humidity: 5% to 95%.

- Dimensions: 147 x 35 x 22 mm

- Weight: 63 g

4 Device view

5 Check the supplied accessories

6 HN-D-BA-e-2020

It should be checked in advance whether all accessories have been supplied properly.

The various optional parts can be purchased at any time from SAUTER GmbH. These

should only be used with approved equipment. This could cause problems with other

measuring instruments and the repair costs cannot then be covered by the warranty.

Packing list:

Attention: The test block is not included in the delivery!

- sturdy carry case

- HN-D hardness tester for metals

- USB cables

- Charger for HN-D

- Small stabilizing ring

- Cleaning brush

6 Instructions

6.1 Keys and their functions

1st "Next", for material selection, hardness scale...

2nd "Menu & Selection"

3. "Print"

4. switch on/off & back

5. + : "Hardness calibration": press down and hold, then press for

2 seconds to enter calibration mode.

6. +: "Delete": press and hold down, then press to delete the current data.

7. + : "Date and time setting": press and hold down when the unit isswitched

off, then press to set the date and time

8 + : "Browse data": press and hold down, then press to enter the data

browse mode.

HN-D-BA-e-2020 7

6.2 LCD display

6.3 Settings

Material type

In measuring mode, press three times to show the material type on the display. The

desired material type can now be selected with the key. This changes in a certain

sequence, namely

Note: It is necessary to define the material classification. If the material type is

not known, the material manual can be consulted.

If the material group is changed, the rebound counter starts at "0" again.

Hardness scale

In measuring mode, press the key twice, then the field of the hardness scale is

backlit. The desired hardness scale can now be selected with the key. The order of

the available hardness scales always changes as follows:

Figure: Hardness scale range backlit

HLD= hardness Leeb

HB= Brinell

HRB= Rockwell (B)

8 HN-D-BA-e-2020

HRC= Rockwell (C)

HV= Vickers

HSD= Shore hardness (D)

Note:

If the symbol "---" appears, means: out of range.

The standard hardness scale is always HLD.

Data in a measuring group

In the measuring mode, press the key four times to backlight the field for the

measurement data groups. Press the key to enter the desired number for the data

in a measurement group, the maximum number being 9.

Searching (browsing) data

1. search the measurement data in the current, running measurement group

In measuring mode, press the key once to backlight the rebound field. Then the key

is pressed and the current measuring group can be searched.

2. search older data: In measuring mode, press and hold the key. The key is then

pressed to display the mode of older data.

Pressing down will select the next group and pressing will select the previous one.

Use the key to search the selected group.

Press the button to search the next group and the button to search the previous

one.

If the key is pressed, the previous menu is entered.

Figure: Searching the measurement data group

Setting the date and time

This hardness tester has a built-in real time clock. The date and time can be set in the

following way if required:

When the power is off, press the button , then press and hold the button for about

3 seconds to enter the date and time mode.

HN-D-BA-e-2020 9

By pressing the key in succession, it is possible to select days of the month from 1

to 31 in ascending order, and by pressing the key in descending order from 31 to 1.

The month is set by pressing the key downwards , and by pressing the key

downwards, it is possible to select months in ascending order from 1 to 12, and by

pressing the key in descending order from 12 to 1. The same procedure is used to

set the year, hour, minute and second.

When the seconds setting process has been reached, pressing the key ends this

setting and returns to the measuring mode.

Calibration

Calibration must be performed to calibrate the measured value (HLD) of the hardness

tester in order to keep any measurement errors as small as possible.

The procedure is as follows:

1. with the instrument switched off, press and hold the button and simultaneously

press the button for three seconds to enter calibration mode, see figure

Now 5 tests are made on the test block to get the average value of the same.

2. 5 test measurements can be viewed one after the other by pressing the key and

the faulty measurements can be deleted with .

3. press the key to set the value imprinted on the test block: first the 100 digit step

lights up.

4. by pressing the key it can be changed and entered from 0 to 9.

5. when the key is pressed, the 10-digit binary digit lights up This can be changed

and entered from 0 to 9 by pressing the key.

10 HN-D-BA-e-2020

6. pressing the key lights up the 1 digit binary digit. This can be changed and

entered from 0 to 9 by pressing the key.

7. pressing the key ends the calibration and returns to the measuring mode.

Note: Before using the hardness tester for the first time, it is essential to

calibrate it on the test block with the impact direction always straight (vertical,

at right angles to the test block) downwards.

6.4 Format of the stored data

The data, such as hardness value, scale, material sample, rebound direction, time,

date, etc. are automatically stored in the memory after each measurement. The HN-D

can store 500 measurement data. If the number of tests is higher, the last

measurement is placed in the first position and the previous first position is deleted.

The same procedure is followed with each subsequent measurement: it is moved to a

lower position.

6.5 Backlit display

In case of sparse or poor lighting, the LED backlight function is used. However, this

switches off again if no key is pressed within 3 seconds. During testing or when keys

are pressed, this function becomes active again immediately.

6.6 Automatic switch-off

If no measurement is taken for three minutes or no key is pressed for three minutes,

the instrument switches off automatically to save the batteries. All parameters are

always stored automatically before.

6.7 Recharge

Before first use and before the battery voltage is exhausted, the batteries must be

charged.

To do this, connect the HN-D and the charger using the USB cable and then plug the

charger into the socket to start the charging process.

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