Related Manuals for Magnet-physik FH 55
Summary of Contents for Magnet-physik FH 55
- Page 1 Emil-Hoffmann-Str. 3 50996 Cologne Germany Operating Instructions FH 55 Gauss-/Teslameter Preserve for future application! BA - Nr.: 2000550EBA01...
- Page 2 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.
- Page 3 • 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.
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Page 4: Table Of Contents
Gauss- / Teslameter FH 55 Table of Contents General Information ....................6 Safety Instructions ....................6 Intended Purpose ....................6 Sources of Danger ....................7 Authorized Operator .................... 7 Safety Measures at Place of Installation .............. 7 Safeguard Installations ..................8 Emergency Measures ................... - Page 5 3 : D IEC- / VDE-S ................. 10 ABLE ETAILS ON AFETY List of Illustrations . 1 : G FH 55 .................... 12 AUSS ESLAMETER . 2 : M NK 1 ................14 AGNETIC SHIELDING CHAMBER . 3 : P ..............24 ROBE ORIENTATION FOR POSITIVE READING .
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Page 6: General Information
The magnetic field strength meter FH 55 is a compact benchtop instrument for measuring the magnetic field strength H in Ampere per Meter (A/m) and the magnetic flux density or induction B in Tesla (T) or Gauss (G). Particular features of the FH 55 are high accuracy, easy handling and a multitude of functions. -
Page 7: Sources Of Danger
FH 55 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. -
Page 8: Safeguard Installations
Gauss- / Teslameter FH 55 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. -
Page 9: Transport And Installation
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. -
Page 10: Table 2 : Electromagnetic Tolerance (Emv)
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. BA - Nr.: 2000550EBA01... -
Page 11: Introduction
− High Field Probes to 30 T Full-Scale Range − High Sensitivity Probes – 30 µT to 300 µT Full-Scale Ranges If you have just received your new FH 55, please proceed to the next chapter and become familiar with the installation instructions. Complete and detailed instrument operational information is contained in chapter Functions. -
Page 12: Description
Some rarely used functions can be accessed through a menu. Fig. 1 : Gauss-/Teslameter FH 55 The FH 55 measures the magnetic flux density (induction) either in Tesla (T) or Gauss (G) or the magnetic field strength in Ampere per Meter (A/m). Magnetic field ranges can be set manually or with auto ranging. - Page 13 Gauss- / Teslameter FH 55 displayed. The Peak function allows in DC mode the peak value of a pulsed magnetic field to be measured. The relative function is intended to let the user see small variations in larger fields. The user defined set point becomes the center or zero point of the relative reading and is shown on the second line of the display.
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Page 14: Operation
FH 55 4 Operation 4.1 Initial Setup To take the FH 55 into operation proceed as follows. 1. Power line connection: connect the power cord to the power connector on the rear side of the instrument and to a power outlet. -
Page 15: Standard Display
Gauss- / Teslameter FH 55 Probe readings are dependent upon the angle of the tip in relation to the magnetic field. The greater the angle between the probe and the field, the higher the percentage of error. For example, a 5° angle will cause a 0.4% error, a 10° angle will induce a 1.5% error. - Page 16 Switches Filter on and off. Unit The FH 55 can display the magnetic flux density (induction) B in Tesla (T) or Gauss (G) or the magnetic field strength H in Ampere per Meter (A/m). By pressing the unit button, the user can select between these units.
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Page 17: Probe Handling
Gauss- / Teslameter FH 55 Inside a menu dialog Delete, Enter, Mode and Escape have the following functions: With the Delete key you erase the last numerical input. With Enter you confirm the last input and take over the setting. After the last input in a dialog you leave it with Enter. -
Page 18: Functions
FH 55 5 Functions In the present chapter all functions of the FH 55 are described in detail. The most important functions can be accessed directly over function keys. Some rarely used function can be invoked in a menu. This main menu is accessed with the Mode key. The submenus are selected with the arrow keys (, ) and opened with the Enter key. -
Page 19: Zero
5.6 Unit The FH 55 displays the magnetic flux density (induction) B in Gauss (G) or Tesla (T) or the magnetic field strength H in Ampere per Meter (A/m). With the Unit key you can select the desired unit. -
Page 20: Temp
The FH 55 is no temperature measuring instrument. Do not use the probes for temperature measurement. Extreme temperatures and mechanical stress due to fast temperature changes can alter the calibration or destroy the Hall sensor. -
Page 21: Reset
Gauss- / Teslameter FH 55 5.9 Reset The Reset key is used to set the values captured with Max./Min. or Peak (see below) back to zero. 5.10 Max./Min. If the Max./Min. key is pressed once, the largest value that was measured since the last pressing of Reset is displayed in the center of the second display line. -
Page 22: Field Correction (Menu Function)
If a probe is connected to the FH 55, or if the instrument is switched off and on again, all correction functions, that have correction data available, are switched on automatically. -
Page 23: Probes
Gauss- / Teslameter FH 55 6 Probes To avoid damage and for best results during use, the probes have a number of handling and accuracy requirements that must be observed. 6.1 Changing Probes To connect the probe, take hold of the probe connector and move it straight into socket. Secure the connector with the two screws. -
Page 24: Probe Operation
6.4 Probe Types Three different standard probe Types are available for the FH 55. They are transverse, axial and surface field probe. The transverse probe has a Hall sensor that is mounted parallel to the probe axis. It measures fields, that are perpendicular to the probe axis. -
Page 25: Fig. 4 : Surface Field Probe
Gauss- / Teslameter FH 55 Hall sensor Transverse probe – top view Measures flux density perpendicular to probe axis Transverse probe – side view The axial probe has a Hall sensor, that is mounted perpendicularly to the probe axis. It measures fields that are parallel to the probe axis. -
Page 26: Probe Sensitivity And Measuring Ranges
High sensitivity probe work in the ranges from 30 µT (300 mG) to 300 µT (3 G). 7. If none of the standard probes matches your configuration, keep in mind that Magnet-Physik also can make customized probes for fulfilling special demands regarding dimensions, temperature range or accuracy. - Page 27 Gauss- / Teslameter FH 55 the condition that exists during factory calibration. The greater the deviation from orthogonality (from right angles in either of three axes), the larger the error of the reading. For example, a 5° variance on any one axis causes a 0.4% error, a 10° misalignment induces a 1.5% error, etc..
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Page 28: Remote Operation
7 Remote Operation 7.1 Access Rights After switching on, the FH 55 is in LOCAL-Mode. In this mode it can be operated from the keypad. When the serial interface starts to write to the instrument, the access from the keypad is restricted (remote mode). - Page 29 Gauss- / Teslameter FH 55 AUTO Write: #AUTO 0 Auto range off #AUTO 1 Auto range on Answer: #AUTO 0 or 1 Read: ?AUTO Answer: AUTO 0 or 1 ZERO Write: #ZERO 1 Starts the Zero routine without further request...
- Page 30 Gauss- / Teslameter FH 55 LIMU Write: #LIMU n,m,u set upper limit value and switch on function n = 1...7 (range) m = -3000...3000 (digits) u = 0...2 (unit) Answer: LIMU n,m,u Read: ?LIMU Answer: current stting LIML Write: #LIML n,m,u...
- Page 31 Gauss- / Teslameter FH 55 Write: #MAX 2 Show Max/Min #MAX 1 Show Max #MAX 0 Answer: MAX 0, MAX 1 or MAX 2 Read: ?MAX Answer: MAX 0, MAX 1 or MAX 2 MMAX Read only: ?MMAX Read the Max value Answer: digits and unit, e.g..
- Page 32 Gauss- / Teslameter FH 55 CTEMP Write: #CTEMP 1 enable temperature correction #CTEMP 0 disable temperature correction Answer: CTEMP 0 or CTEMP 1 Error message, if a probe without temperature sensor is connected Read: ?CTEMP Answer: CTEMP 0 (aus) oder CTEMP 1 (ein)
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Page 33: Maintenance
The checks shall be periodically repeated and documented. 8.2 Checking for Damage The FH 55 and all accessories must be checked once a month for damages. If any of the components, in particular the instrument housing, a probe or an optional line power supply (AC adapter) are damaged, the equipment must only be used if it has been cleared for operation by an authorized person. -
Page 34: Connectors
Make sure, that the probe is apart from larger magnetic fields (AC and DC) during zeroing and that it is not moved. Use the shielding chamber. If the display still can not be set to zero, probably the Hall sensor in the probe is defective. You may send it to MAGNET-PHYSIK for inspection. -
Page 35: Relay Output For Limits
Gauss- / Teslameter FH 55 Handshake none 8.5.4 Relay Output for Limits The relay contacts of the limit function can be accessed via a 6-pole flange socket (Binder, series 680) on the rear panel. Flange socket (Binder, series 680), outside view... -
Page 36: Accessories
8.7 Taking Out of Operation ation To shut down operation of the FH 55 switch the device off and store it as per storage instructions to facilitate operation again at a later date. It is advisable to register the date of the last operation.