Magnet-physik FH 55 User manual

BA - Nr.: 2000550EBA01
Emil-Hoffmann-Str. 3
50996 Cologne
Germany
Operating Instructions
FH 55
Gauss-/Teslameter
Preserve for future application!

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 2
Introduction
Dear customer,
You have decided on a product of high technical standard from MAGNET-PHYSIK. We are
convinced that our product will be a valuable help in your daily work. Condition is that the
operating instructions are read carefully and observed. We will not take over any warranty or
liability in case of deliberate faulty operation or disregard of our safety notes.
If you face any problems while working with the equipment or the operating instructions or if
you have any proposals for improvements please do not hesitate to contact us.
Purpose
The operating instructions give a survey about the application and functionality of the FH 55
Gauss-/Teslameter.
Target Group
In the following chapters the user of the devicet will find all necessary information regarding
handling and operation.
Address
MAGNET-PHYSIK
Dr. Steingroever GmbH
Emil-Hoffmann-Str. 3
Tel. :
[phone]
50996 Köln, Germany
Fax. :
[phone]

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 3
Notes
•This instruction cannot cover every possible aspect of installation, operation and
maintenance, or every error that might occur.
•If you would like more information, or if you encounter particular problems that are not
discussed in sufficient detail in the instructions, please contact company MAGNET-
PHYSIK.
•We also state that the content of these Instructions is not part of a previous or existing
agreement, undertaking, or legal relationship, and is not intended to amend the same. All
obligations of MAGNET-PHYSIK result from the applicable warranty: These contractual
warranty provisions are neither extended nor limited by statements in these instructions.
MAGNET-PHYSIK GmbH, Köln -
2000550EBA01/2019
Passing on and reproduction of these documents, and utilization
and disclosure of their contents is prohibited unless specifically
authorized. Violations shall be cause for damage liability.
All rights reserved.
Subject to change without prior notice
Although the contents of this publication have been checked for
agreement with the hardware and software described, we do not
accept liability for total agreement since differences cannot be
completely excluded. The information in this publication is
checked at regular intervals and necessary corrections included in
the next release. Your suggestions for improving this publication
are welcome.

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 4
Table of Contents
1General Information ....................................................................................................6
1.1 Safety Instructions ...............................................................................................6
1.2 Intended Purpose..................................................................................................6
1.3 Sources of Danger................................................................................................7
1.4 Authorized Operator ............................................................................................7
1.5 Safety Measures at Place of Installation..............................................................7
1.6 Safeguard Installations.........................................................................................8
1.7 Emergency Measures...........................................................................................8
2Transport and Installation...........................................................................................9
2.1 Unpacking and Checking.....................................................................................9
2.2 Transport and Storage..........................................................................................9
2.3 Technical Data.....................................................................................................9
3Introduction ..................................................................................................................11
3.1 General.................................................................................................................11
3.2 Description...........................................................................................................12
4Operation.......................................................................................................................14
4.1 Initial Setup..........................................................................................................14
4.2 Standard Display..................................................................................................15
4.3 Keys .....................................................................................................................15
4.4 Probe Handling....................................................................................................17
5Functions.......................................................................................................................18
5.1 AC/DC.................................................................................................................18
5.2 Range ...................................................................................................................18
5.3 Auto .....................................................................................................................18
5.4 Zero......................................................................................................................19
5.5 Filter.....................................................................................................................19
5.6 Unit ......................................................................................................................19
5.7 Temp....................................................................................................................20
5.8 Limit.....................................................................................................................20
5.9 Reset.....................................................................................................................21
5.10 Max./Min. ............................................................................................................21
5.11 Peak......................................................................................................................21
5.12 Relative................................................................................................................21
5.13 Field Correction (Menu function)........................................................................22
5.14 Temp. Correction (Menu function)......................................................................22
5.15 Remote Access (Menu function) .........................................................................22
5.16 Remote Baud Rate (Menu function)....................................................................22
6Probes ............................................................................................................................23
6.1 Changing Probes..................................................................................................23

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 5
6.2 Probe handling.....................................................................................................23
6.3 Probe Operation...................................................................................................24
6.4 Probe Types .........................................................................................................24
6.5 Probe Sensitivity and Measuring Ranges ............................................................26
6.6 Probe Accuracy....................................................................................................26
7Remote Operation ........................................................................................................28
7.1 Access Rights.......................................................................................................28
7.2 Command Format for the Serial Interface...........................................................28
8Maintenance..................................................................................................................33
8.1 Maintenance Plan.................................................................................................33
8.2 Checking for Damage..........................................................................................33
8.3 Calibration ...........................................................................................................33
8.4 Troubleshooting...................................................................................................33
8.5 Connectors ...........................................................................................................34
8.5.1 Probe Connector ..............................................................................................34
8.5.2 Analog Output .................................................................................................34
8.5.3 Serial Interface RS 232....................................................................................34
8.5.4 Relay Output for Limits...................................................................................35
8.6 Accessories ..........................................................................................................36
8.7 Taking Out of Operation ation.............................................................................36
List of Tables
TABLE 1:AMBIENT CONDITIONS ...................................................................................................9
TABLE 2:ELECTROMAGNETIC TOLERANCE (EMV).....................................................................10
TABLE 3:DETAILS ON IEC- /VDE-SAFETY.................................................................................10
List of Illustrations
FIG.1:GAUSS-/TESLAMETER FH 55............................................................................................12
FIG.2:MAGNETIC SHIELDING CHAMBER NK 1 ............................................................................14
FIG.3:PROBE ORIENTATION FOR POSITIVE READING ...................................................................24
FIG.4:SURFACE FIELD PROBE......................................................................................................25

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 6
1General Information
The magnetic field strength meter FH 55 is a compact benchtop instrument for measuring the
magnetic field strength Hin Ampere per Meter (A/m) and the magnetic flux density or
induction Bin Tesla (T) or Gauss (G). Particular features of the FH 55 are high accuracy, easy
handling and a multitude of functions.
1.1 Safety Instructions
Special warning signals, whose non-observance may lead to injuries and/or property damage, as
well as important tips are indicated in these operating instructions as follows:
Danger!
means that serious bodily injury resulting in death or considerable material
damage may occur if the appropriate safety measures are not taken.
Caution!
means that light bodily injury or material damage may occur if the
appropriate safety measures are not taken.
Important!
Indicates important information which is to be paid particular attention.
1.2 Intended Purpose
Important!
It must be explicitly stated that the field strength meter FH 55 is to be used
only for its intended purpose.
The intended purpose of the FH 55 is the measurement of the magnetic
field strength or flux density of static, periodically alternating or pulsed
magnetic fields.
Every application not in accordance with this intended purpose is absolutely
prohibited and implies the deliberate dealing with non-calculable risks for
both the operator as well as the equipment.
Unauthorized reconstruction of and/or alterations to the equipment are
strictly forbidden!
The instructions as stipulated in this operating manual for operation and installation are to be
strictly observed!

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 7
1.3 Sources of Danger
The field strength meter FH 55 is operated with battery power or with a special mains power
supply. At this point, for reasons of work-place safety and accident prevention the sources of
danger emanating from such a device will be especially pointed out. The respective instructions
to the operator and owner of the field strength meter are to be strictly adhered to.
Danger!
Under no circumstances the equipment must come into contact with liquid
mediums, such as water, oil, etc. If in spite of all precautions taken, such a
medium does come into contact with the electronics of
the FH 55, there is considerable danger for the smooth operation of the
device!
In this case the device must be shut down immediately by pulling the line
power plug.
The equipment must similarly be switched off when being cleaned. Never
clean with water! Dry cloths only to be used for cleaning!
Danger!
The Hall probe must never be brought into contact with an electrical voltage
conductor. The paint on the probe surface is not an electrical insulation.
Disregard of this warning can cause danger to life of the user. Additionally,
the device and the probe can be damaged.
Danger!
Do not operate the device in an explosive atmosphere:
Do not operate the instrument in the presence of flammable gases or fumes.
Operation of any electrical instrument in such an environment constitutes a
definite safety hazard.
1.4 Authorized Operator
The field strength meter FH 55 may only be used and connected by personnel authorized by
owner.
The owner must in this case:
•place operating instructions at the operator's disposal at all times and
•make sure the operator has read and understood them.
1.5 Safety Measures at Place of Installation
No special safety measures are necessary.

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 8
1.6 Safeguard Installations
The device does not have any special safeguard installations as safety concerns have been
considered in construction. A potential danger only arises if the device is used against its
intended purpose of operation or safety regulations are disregarded.
1.7 Emergency Measures
In the case of emergency, when all safety instructions fail, proceed as follows:
Important!
1. Take emergency measures, such as “First-aid”.
2. Secure the device and working place against further use.
3. Write the case report.

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 9
2Transport and Installation
2.1 Unpacking and Checking
Check the packaging for signs of damage. Any correspondence regarding damage (evident or
hidden) or partial loss of the consignment must be made in written form immediately after
receipt of goods. Also inform the freight forwarder immediately.
Open the packaging. A packing list is enclosed which enables you to check that the ordered
device and accessories have been received. Use the packing list to check that all parts of the
device have been unpacked. Check them for damages. Make sure everything has been removed
before discarding the packaging.
If the device has been damaged in transit, make sure the forwarder and insurance are informed.
Inform Magnet-Physik of the same. If there are parts or accessories missing, let Magnet-Physik
know immediately. Magnet-Physik cannot accept responsibility for any missing parts if not
informed within 60 days from date of dispatch.
Important!
Check on receipt of goods and before taking the device or accessories into
operation whether they show visible signs of damage. The device must
otherwise not be put into operation before being cleared by an authorized
person.
2.2 Transport and Storage
Always use suitable packing or containers for transport and storage, so that damage is avoided.
If possible, the original packing should be used for dispatch.
Due to their fragility, most probes are dispatched in special covers or foamed packaging. The
same packaging should be used for storage and when the probe is shipped for calibration or
repair.
Do not store the device in places where one or more of the limiting values for the ambient
conditions are exceeded.
2.3 Technical Data
Table 1 : Ambient Conditions
Temperature:
- for operation
0 °C to + 40°C
- for storage and transport
Class 1K4 according to EN 50178
25 °C to +55 °C

Gauss- / Teslameter
FH 55
BA - Nr.: 2000550EBA01
SEPTEMBER,24TH,2019
Page 10
Relative humidity:
- for operation
Class 3K3 according to EN 50178
5 % to 85 % (indoor), no dew,
1 g/m3to 25 g/m3
- for storage and transport
Class 1K3 according to EN 50178
5 % to 95 % (indoor), no dew,
1 g/m3to 29 g/m3
Air pressure
- for operation
Class 3K3 according to EN 50178
86 kPa to 106 kPa
- for storage and transport
Class 2K3 according to EN 50178
70 kPa to 106 kPa
Pollutants:
- SO2
0,5 ppm
(rel. humidity 60%, no dew)
- H2S
0,1 ppm
(rel. humidity 60%, no dew)
Oscillations:
according to IEC 68-2-6
10 ... 55 Hz (const. amplitude 1,0 mm),
57 ... 150 Hz (const. acceleration 2 g)
Table 2 : Electromagnetic Tolerance (EMV)
Immunity from discharge of static electricity:
based on EN 61000-4-2
Air discharge: 8 kV
Contact discharge: 4 kV
Immunity from incident high frequency:
based on EN V 50141
0.15 to 80 MHz
10 V/m
80 % AM (1 kHz)
Table 3 : Details on IEC- / VDE-Safety
Measurement of insulation based on VDE 0160 (05.88):
between electrically independent circuits and with a central
grounding point for connected circuits
- Testing voltage
at a rated voltage of the circuit (AC/DC)
Ue= 0...50 V
500 V, sine, 50 Hz
Safety test:
IEC 204-1;
VDE 0113 Part 1 (06.93)
Important!
The FH 55 must always be placed on a solid base.
Never operate the equipment in places where one or more of the limiting
values for the ambient conditions are exceeded.