Magnet-physik FH 52 User manual

BA - Nr.: 1620010102
Emil-Hoffmann-Strasse 3
50996 Koeln
Germany
Operating Instructions
FH 52
Gauss-/Teslameter
Preserve for future application!

Gauss-/Teslameter
FH 52
BA - Nr.: 1620010102
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 are 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 user's manual gives a survey about the applications and functionality of the FH 52
Gauss-/Teslameter.
Target Group
In the following chapters the user of the equipment will find all necessary information
regarding the handling of the product or device.
Manufacturer
MAGNET-PHYSIK,
Dr. Steingroever GmbH
Emil-Hoffmann-Str. 3
50996 Koeln
Germany
Tel. [phone] / 3919-0
Fax. [phone] / 3919-19

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FH 52
BA - Nr.: 1620010102
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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 - 1620010102/2016
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 52
BA - Nr.: 1620010102
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Table of Contents
1General Information ....................................................................................................6
1.1 Safety Instructions ...............................................................................................6
1.2 Intended Purpose of Operation ............................................................................6
1.3 Sources of Danger................................................................................................7
1.4 Authorized Operators...........................................................................................8
1.5 Safety Measures at Place of Installation..............................................................8
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
2.4 Installation ...........................................................................................................11
2.5 Structure of the Device ........................................................................................12
2.6 Accessories (included in delivery).......................................................................12
2.7 Options (to be ordered separately).......................................................................13
2.8 Taking Into Operation..........................................................................................13
3Operation.......................................................................................................................14
3.1 Display.................................................................................................................14
3.2 Key Pad................................................................................................................15
3.3 Functions..............................................................................................................16
3.3.1 On/Off Key –Switching the Device On and Off ............................................16
3.3.2 Range Key –Range Selection .........................................................................16
3.3.3 Zero Key –Zeroing the Probe.........................................................................17
3.3.4 Reset Key –Resetting the Display of Maximum and Minimum ....................17
3.3.5 Menu Operation...............................................................................................17
3.3.6 Main Menu ......................................................................................................18
3.3.7 AC/DC Menu...................................................................................................18
3.3.8 Unit Menu........................................................................................................18
3.3.9 Filter Menu ......................................................................................................19
3.3.10 Max./Min. Menu..............................................................................................20
3.3.11 Limit Menu......................................................................................................20
3.3.12 Relative Menu..................................................................................................21
3.3.13 Information Menu............................................................................................22
3.3.14 Display Menu ..................................................................................................23
3.3.15 Power Off Menu..............................................................................................23
3.3.16 Test Menu........................................................................................................24
3.3.17 Measuring Data Memory.................................................................................24
3.4 Switching between Battery Power and USB Power............................................25
3.5 Standby Mode......................................................................................................25
3.6 Battery State Indicator .........................................................................................25

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FH 52
BA - Nr.: 1620010102
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3.7 Probes...................................................................................................................26
3.7.1 Probe Handling................................................................................................27
3.7.2 Polarity of the Magnetic Field.........................................................................28
3.8 Remote Operation................................................................................................29
3.9 Operating Principle..............................................................................................29
4Maintenance..................................................................................................................31
4.1 Maintenance Plan.................................................................................................31
4.2 Checking for Damage..........................................................................................31
4.3 Calibration ...........................................................................................................31
4.4 Troubleshooting...................................................................................................31
4.5 Taking Out of Operation......................................................................................32
List of Tables
TABLE 1: SPECIFICATIONS ..............................................................................................................9
TABLE 2: AMBIENT CONDITIONS ..................................................................................................10
TABLE 3: RANGES.........................................................................................................................16
List of Illustrations
FIG.1: FRONT VIEW OF THE DEVICE..............................................................................................12
FIG.2: DISPLAY DURING MEASUREMENT OPERATION ...................................................................14
FIG.3: MAIN MENU.......................................................................................................................18
FIG.4: AC/DC MENU....................................................................................................................18
FIG.5: UNIT MENU........................................................................................................................19
FIG.6: FILTER MENU.....................................................................................................................19
FIG.7: MAX./MIN.MENU..............................................................................................................20
FIG.8: LIMIT MENU.......................................................................................................................21
FIG.9: RELATIVE MENU................................................................................................................22
FIG.10: INFORMATION MENU .......................................................................................................23
FIG.11: DISPLAY MENU................................................................................................................23
FIG.12: POWER OFF MENU ...........................................................................................................24
FIG.13: TEST MENU......................................................................................................................24
FIG.14: TRANSVERSE PROBE ........................................................................................................26
FIG.15: AXIAL PROBE...................................................................................................................26
FIG.16: PROBE ORIENTATION FOR POSITIVE MEASUREMENT AND POLARITY DISPLAY “N”...........28
FIG.17: OPERATING PRINCIPLE OF A HALL GENERATOR...............................................................30

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BA - Nr.: 1620010102
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1General Information
The Gauss-/Teslameter FH 52 is a measuring instrument for the quantities “Magnetic Field
Strength” and “Magnetic Flux Density” or “Magnetic Induction”.
The following instructions with regard to use and operation must be strictly adhered to. The
user or operator of the equipment must make sure that only suitably qualified personnel
operates or services the device.
1.1 Safety Instructions
Special warnings, whose non-observance may lead to injuries and/or property damage, as well
as important hints, 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.
Warning!
Means that bodily injury or material damage may occur if the appropriate
safety measures are not taken.
Important!
Indicates important information that is to be paid particular attention.
1.2 Intended Purpose of Operation
Important!
It must be explicitly stated that the FH 52 is to be used only for its intended
purpose.
The intended purpose of the FH 52 is the measurement of the magnetic
field strength or the magnetic flux density of static or periodically
alternating magnetic fields.
Every application not in accordance with this intended purpose is prohibited
and implies the deliberate dealing with non-calculable risks for both the
operator as well as the equipment. Unauthorized reconstructions of and/or
alterations to the equipment are forbidden for safety reasons!

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1.3 Sources of Danger
The FH 52 is operated with battery power. For reasons of work-place safety and accident
prevention the sources of danger emanating from the use of the device will be pointed out here.
The respective instructions to the operator and owner of the FH 52 are to be strictly adhered to.
Danger!
Do not operate the instrument in an explosive atmosphere. Do not operate it
in the presence of flammable gases or fumes. Operation of any electrical
device in such an environment constitutes a definite safety hazard.
Danger!
The measuring instrument and the software of this product are not designed,
tested, intended or authorized for use in any medical applications, surgical
applications, medical device manufacturing or any similar procedure or
process. Disregard of this limitation can cause danger to life.
Danger!
The Hall probe must never be brought into contact with an electrical
voltage conductor or close to an electrical high voltage conductor. The
coating or sleeve on the probe surface is not an electrical insulation with
defined properties. Disregard of this warning can cause danger to life of the
user. Additionally the measuring instrument and a connected computer can
be damaged.
Warning!
Although the FH 52 is protected against splashes, it is not waterproof.
Therefore it must not be immersed in water or permanently exposed to
conditions of high humidity.
The device must not come into contact with liquid media, like water, oil,
etc. If, in spite of all precautions taken, a liquid should get into the FH 52,
there is a considerable risk for the operation of the device. In this case the
device must be switched off immediately and the USB cable and the
batteries must be removed.
The device must be switched off when being cleaned. Never clean it with
water. Only use a dry cloth for cleaning!

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Warning!
Keep away from live circuits:
Operating personnel must not remove instrument covers, except the cover of
the battery compartment. Only qualified maintenance personnel must make
component replacement and internal adjustments. Do not replace compo-
nents with the USB cable connected.
Warning!
Do not substitute parts or modify the instrument:
Due to the risk of electrostatic discharge and because of the danger of
introducing additional hazards, do not install substitute parts or perform any
unauthorized modification to the instrument. Return the instrument to
MAGNET-PHYSIK Dr. Steingroever GmbH, Cologne, Germany or an
authorized representative for service and repair to ensure that safety features
are maintained.
1.4 Authorized Operators
The FH 52 must only be used by personnel authorized by the owner.
In this case the owner must:
•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.
1.6 Safeguard Installations
The device does not have any special safeguard installations as safety concerns have been taken
into account 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.

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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.
Store the instrument in the hard case in which it has been delivered.
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: Specifications
Display
3½ digits (0...±1999), backlight when powered from USB
Units
Tesla (T), Gauss (G), Ampere per Meter (A/m), Ampere per
Centimeter (A/cm), Oersted (Oe)
Ranges (with standard
probes)
20 mT
200 G
16 kA/m
160 A/cm
200 Oe
200 mT
2 kG
160 kA/m
1600 A/cm
2 kOe
2 T
20 kG
1600 kA/m
16 kA/cm
20 kOe
Resolution (in most sensitive
range, with standard probes)
0.01 mT, 0.1 G, 0.01 kA/m, 0.1 A/cm, 0.1 Oe
Frequency range
DC (with polarity display +/- or N/S)
AC 20 Hz - 10 kHz (true rms)

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BA - Nr.: 1620010102
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Accuracy (instrument with
standard probe, at 23 °C)
DC: 1 % of reading + 0,05 % of range
AC ≤ 5 kHz: 3 % of reading + 0,25 % of range
AC > 5 kHz: 5 % of reading + 0,25 % of range
Precision (reproducibility),
(instrument with standard
probe, at 23 °C)
DC: 0,5 % of reading + 0,05 % of range
AC: 2 % of reading + 0,25 % of range
Temperature Coefficient of
Sensitivity (instrument with
standard probe)
Approx. -0,05 %/K
Sampling rate
Standard 4.17 Hz, at USB operation up to 16.7 Hz
Power source
- Battery life time
- Current consumption
Exchangeable batteries, 4 pcs. 1.2 V to 1.5 V, size AA (LR6)
or power supply from USB
Approx. 300 hours with high quality alkaline batteries
Approx. 165 mA from USB, approx. 6 mA from batteries
Accessories/Options:
- Hall probes
Transverse probe or axial probe;
the probe connection cables are fixed to the probes,
length 1.5 m (5 ft);
- Hard case
Included
- USB cable
USB type A to micro USB type B,
length approx. 1.8 m (6 ft)
- Magnetic shielding chamber
Optional, see data sheet “NK Shielding Chambers”
- USB AC adapter
Optional, different AC line plug styles available
Outer dimensions
228 mm x 70 / 117 mm x 47 mm
Weight
approx. 0.4 kg
Table 2: Ambient Conditions
Temperature:
- for operation
0 °C to +40 °C (the FH 52 can be operated
from -10 °C to +40 °C, but AC accuracy
is not specified below 0 °C)
- for storage and transport
Class 1K4 according to EN 50178
-25 °C to +55 °C
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