Kern-sohn HN-D User Manual download pdf (Page 1)

Sauter GmbH

Ziegelei 1

D-72336 Balingen

E-Mail: [email protected]

Tel: +49-[0]7433- 9933-199

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

Internet: www.kern-sohn.com

Instruction Manual

HN-D

HN-D-BA-e-1213 1

MOBILE LEEB HARDNESS TESTER

Table of contents

Cautions

1. Summary

1.1 Measuring Principle Scope

1.2 Hardness Value „L“

1.3 Features

1.4 Applications

1.5 Primary Industries

2. Technical Specifications

3. Instrument’s views

4. Checking Supplied Accessories

5. Operation Instruction

5.1 Keys and their Functions

5.2 LCD Screeen

5.3 Settings

5.3.1 Material Type

5.3.2 Hardness Scale

5.3.3 Data in One Group

5.3.4 How to browse Data

5.3.5 Setting Date and Time

5.3.6 Calibration

5.4 The Format of Memory Data

5.5 Backlight

5.6 Automatic Shut-Off

5.7 Charging

6. Data Printing

7. Hardness Testing

7.1 Checking of Settings

7.2 Sample Preparation

8. Troubles and solutions

9. Maintenance and Service

9.1 Impact Device Maintenance

9.2 How to Store the Reports

9.3 Normal Maintenance Procedures

Appendix 1 Daily Checking

Appendix 2 Factors affecting the Accuracy

Appendix 3 Measuring Range

Applicable Standards

10. Declaration of Conformity

Cautions

Please carefully read this first

1. Any components of the instrument may not be

submerged into water or exposed to rain, which could

cause a battery explosion ort he display might be

damaged.

2. If the instrument isn’t used for a longer period, it should

be stored in dry environment and in its original transport

case. The environmental temperature should be within the

range of -30°C up to +80°C and relative humidity from

(RH) 5% bis 95%.

1. Summary

1.1 Measuring Principle Scope

When the test is carried out, an impact body with a

tungsten carbide test tip is being impelled by spring force

against the surface to be tested, from which it rebounds.

Impact and rebound velocities are measured by the

following method: a permanent magnet integrated in the

impact body passes through a coil and induces an electric

voltage during its travel back and forth. These voltages are

proportional to the velocities and are processed and

displayed as the hardness value “L” at the instrument.

Modern electronics with power saving features provide a

long operating life.

Illustration

The big-sized LCD display always shows how the HN-D is

configured to test.

Variable function keys allow quick changes of common test

parameters. No subjective measuring errors are possible,

giving highly repeatable results. Internal self diagnostics

with error messages assure reliable test results.

Readings can be stored automatically in the internal

memory or being directly sent to a printer. PC evaluation

software enables a data analysis. These conversions to

other scales (HRC, HRB, HB, HV, HSD etc.) are

programmed into the electronics and can be shown directly

on the display as test result.

1.2 Hardness Value „L“

This term, 1978 introduced by Dr. Dietmar Leeb into

measuring technology, is the quotient fort he impact body’s

rebound and impact velocity, multiplied by 1000. Harder

materials produce higher rebound velocities than less

harder ones. With reference to a particular material group

1 2 3 4 5 6 7

Instruction Manual 1