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Gaussmeter HGM09s Operating Instructions 

Chapter 1  

 

 

Page 2 / 75 

 

 

 

 

© 2010 

© 2010 

© 2010 

© 2010 Goudsmit Magnetic Systems

Goudsmit Magnetic Systems

Goudsmit Magnetic Systems

Goudsmit Magnetic Systems    

All rights reserved. No part of these operating instructions may be reproduced or du-
plicated without the author’s written consent. 

We shall not be liable for the accuracy of these operating instructions nor for dam-
ages  which  can  result  from  the  use  of  this  manual.  Since  mistakes  can  never  be 
avoided completely, despite all efforts, we would appreciate any given hint. We will 
be anxious to correct any faults known to us as soon as possible. 

 

 

 

 

 

 

 

 

Edition Note 

 

 

Data File 

HGM09_Manual_DE_1_00  

Doc. Date 

29.06.2010 

Hardware Status 

VI 

Software Status 

290310 

Current Documentation Status 

1.00 

Status of Documentation 

Concerns Page(s) No. 

01/2010 

Compilation 

Summary of Contents for HGM09S

Page 1: ...OPERATING INSTRUCTIONS GAUSSMETER HGM09S...

Page 2: ...t We shall not be liable for the accuracy of these operating instructions nor for dam ages which can result from the use of this manual Since mistakes can never be avoided completely despite all effor...

Page 3: ...k Value Recording 30 5 9 2 Fast Peak Value Recording 31 5 10 Probe Data 33 6 Setup Menu 34 6 1 Settings 35 6 1 1 Operating Mode of the USB Interface 35 6 1 2 Selecting the Display Units 35 6 1 3 Opera...

Page 4: ...llustrations Table of Illustrations Table of Illustrations Display 9 Basic Assembly of a Hall Probe 10 Flux Line Characteristics of NdFeB Induction Disks 13 Field Strength Pattern of NdFeB Induction D...

Page 5: ...of 100 to 240VAC at 47 to 63Hz Do not use the power supply on voltages beyond these areas Before use check the power supply for cracks or missing plastic parts Pay attention to the insulation Do not...

Page 6: ...ed with the protective earth If you work in areas with voltages higher than 60V DC 30V AC RMS or 42V peak values act with particular caution because of electric shock hazard For measurements in high m...

Page 7: ...atteries are loaded Connect the device to a personal computer via the USB cable if required Or connect the included power supply via the USB socket Connect a measuring probe A suitable measuring probe...

Page 8: ...use in North America The unit is either definitely preset in the setup menu or you can adjust it by pressing the RANGE RANGE RANGE RANGE button Each time you press the button the next unit is selecte...

Page 9: ...6 2 6 2 6 2 6 Stat Stat Stat Statu u u us s s s Display Display Display Display In addition to showing the current measuring value the gaussmeter display also shows the status information a negative...

Page 10: ...force is the basis for measuring a mag netic flux density If you set a voltage between the beginning and the end of a flat electrical conductor the carriers move with a speed of e n Drift E v r r whe...

Page 11: ...idealized description you find a non linear performance offset HALL Hall R B B S R 2 0 1 For the used Hall probes the real description is true for flux densities of up to approx 5000 mT 3 1 2 1 3 1 2...

Page 12: ...ield Dependenc Field Dependenc Field Dependence e e e of the Cross Current Resistance of the Cross Current Resistance of the Cross Current Resistance of the Cross Current Resistance The complex curren...

Page 13: ...1 3 2 1 3 2 1 3 2 1 Sample Sample Sample Sample Measurement Measurement Measurement Measurement with with with with a a a an n n n NdFeB Magnet NdFeB Magnet NdFeB Magnet NdFeB Magnet Due to the high...

Page 14: ...the outside In the center the magnet carries the highest magnetic load in air and therefore provides the lowest flux density 3 2 2 3 2 2 3 2 2 3 2 2 Remanence and Hall Gaussmeter Measurement Remanenc...

Page 15: ...n moving the probe on the pole surface of the magnet the measuring value hardly changes at first When changing the distance though the measuring value varies considerably The smaller the The smaller t...

Page 16: ...uption of the measuring result To compensate external magnetic stray fields or asymmetries of the Hall probe the de vice can be reset For this purpose please hold the measuring probe into a field free...

Page 17: ...ions 4 1 4 1 4 1 4 1 Front Side Overview Front Side Overview Front Side Overview Front Side Overview Figure 5 Front Side 4 2 4 2 4 2 4 2 Ports Ports Ports Ports Overview Overview Overview Overview Fig...

Page 18: ...ity Only use the identical battery type if a change is necessary Only change both batteries at the same time To insert or remove batteries separate the device from the measuring probe and remove the c...

Page 19: ...to the power supply or personal computer after switch ing off The top right edge of the display shows the battery charging status Note The device does not charge automatically when you feed it via th...

Page 20: ...are possible via the installed standard USB interface The interface is specified according to the USB Universal Serial Bus 2 0 The interface is not insulated Please note that the shielding of the meas...

Page 21: ...uring mode DC or AC fields The exact function of this but ton depends on the settings in the setup menu Further explanations see there Via NULL the displayed peak value is set to zero in the peak valu...

Page 22: ...splay Display Display Apart from the measuring value the display shows some status information Battery fully charged Residual capacity approx 75 Residual capacity approx 50 Residual capacity approx 25...

Page 23: ...uring Range The bottom left area of the display shows the currently se lected measuring range with the currently selected unit The equals sign to the right stands for DC field measure ments The shift...

Page 24: ...ivated automatic switch off the device is turned off after 2 or 5 minutes without any activity 5 5 5 5 5 5 5 5 Nu Nu Nu Null ll ll ll During the peak value measurement the stored minimum and maximum v...

Page 25: ...ernal interface RANG SET 0 1 2 3 Manual setting 0 most sensitive area RANG AUTO Automatic setting 5 6 1 5 6 1 5 6 1 5 6 1 Overview Measuring Ranges Overview Measuring Ranges Overview Measuring Ranges...

Page 26: ...limit value changes according to the selected measuring unit This is shown in the bottom left display area Also see the measuring ranges overview Operation via the external interface UNIT TESL APM GA...

Page 27: ...or interspersions of the AC network with a net fre quency of 50 to 60 hertz The measuring values are emitted with positive or negative signs respectively Alternatively the magnetic field polarity can...

Page 28: ...range A small AC field together with a DC field may result in a display overflow Operation via the external interface MODE AC The accuracy of the AC field measurement depends on the AC field s frequen...

Page 29: ...1 01 1500 mT 1 02 2000 mT 1 03 The frequency response factor and shape factor are multiplied with the basic accu racy in dependence of the respective measuring parameters and then added to the basic...

Page 30: ...of minimum and maximum values the displayed measuring value is analyzed continuously and the lowest or respectively highest value are determined from it In this operating mode approx 10 measurements p...

Page 31: ...ection cannot be used in this operating mode Note Please note that in sensitive measuring ranges magnetic AC fields caused by e g transformers or electric lines might lead to a measuring value Normall...

Page 32: ...the range of 1000mT with a frequency of 1kHz The basic accuracy lies at 0 5 The frequency response factor is 0 98 2 During this measurement you have to calculate a total error of 2 0 5 The frequency...

Page 33: ...Probe Data Probe Data For a correct measurement the gaussmeter must always know the necessary probe data The connected probes contain a parameter memory which stores the probe pa rameters the serial...

Page 34: ...n you can also activate the setup menu by holding the RANGE RANGE RANGE RANGE button for approx 3 seconds The setup menu displays the selected menu item inversely The individual menu item can be selec...

Page 35: ...activated and the computer can operate the device and read out the measuring values via the SCPI protocol KEYB KEYB KEYB KEYBO O O OARD ARD ARD ARD Keyboard emulation The device acts similar to a key...

Page 36: ...DC field measurements SLOW SLOW SLOW SLOW Slow recording of min and max values The peak measuring values are re corded and displayed all 100ms An automatic range switch is not possible Only for DC fi...

Page 37: ...n via the RANGE RANGE RANGE RANGE button AUTO AUTO AUTO AUTO Automatic range switch at the range limits The switch is made at 90 and 10 of the measuring range For peak value meas urements the automati...

Page 38: ...ay Contrast A Display Contrast A Display Contrast A Display Contrast Adjustment djustment djustment djustment Operation via the external interface PAR CON 0 20 ON ON ON ON The batteries are charged vi...

Page 39: ...n pressed The first page displays Information regarding the manu facturer Name of the device Installed option Serial number Calibration information The calibration information consists of the calibrat...

Page 40: ...y This operating mode works for computers based on Windows as well as for Linux operating sys tems or for Apple computers The only requirement for the computer is that it has a connection for keyboard...

Page 41: ...stallation of a driver depending on the operating system is generally not re quired The operating system solely has to support the HID Human Interface Device device class according to USB 2 0 This is...

Page 42: ...2 7 3 2 7 3 2 Example Fast Peak Value Mode in Excel Example Fast Peak Value Mode in Excel Example Fast Peak Value Mode in Excel Example Fast Peak Value Mode in Excel The marked values were transmitted...

Page 43: ...at The data format of the virtual interface is predefined A possible adjustment or change of the parameters as the transfer rate etc has no effect The data flow is stored in the USB protocol The data...

Page 44: ...n between two command codes the colon entails a path to the next lower level of the current path of the command tree Command codes must be separated from one another by a colon You can omit the colon...

Page 45: ...4 7 System Commands System Commands System Commands System Commands Commands starting with an asterisk are called general commands The commands with asterisk are used for controlling status operations...

Page 46: ...a Boolean setup is interrogated the device always emits 0 or 1 Example DISP BARG ON DISP BARG Answer 1 cr lf 7 4 5 4 7 4 5 4 7 4 5 4 7 4 5 4 Chara Chara Chara Character String Parameter cter String P...

Page 47: ...ata Output Data Output Data Format Format Format Format Output data have the format that is shown in the following chart Output data always terminate with a CR character followed by an LF character Ty...

Page 48: ...register 7 4 6 2 7 4 6 2 7 4 6 2 7 4 6 2 Release Register Release Register Release Register Release Register The individual bits of the assigned event registers are masked via the release regis ters...

Page 49: ...M09s Operating Instructions Chapter 7 Serial Interface Page 49 75 7 4 6 4 7 4 6 4 7 4 6 4 7 4 6 4 Overview Status Model Overview Status Model Overview Status Model Overview Status Model Figure 10 SCPI...

Page 50: ...Measuring Event Register Bit Decimal Value Definition 0 Overflow 1 An area overflow has emerged during the measurement 1 Data available 2 A measurement is terminated The data are available Bit Definit...

Page 51: ...vent bit Operation terminated RST Reset the gaussmeter SRE Readout and set the status byte release register STB Readout the status byte sum register STAT PRES Reset the error byte release register STA...

Page 52: ...rameters Parameters Parameters Parameters PAR USB Select the operating mode of the USB interface PAR UNIT Select the magnetic unit PAR PEAK Select the peak value recording mode PAR ACDC Select the DC...

Page 53: ...LS LF 7 6 1 2 7 6 1 2 7 6 1 2 7 6 1 2 ESE ESE ESE ESE Description Reads out the event register The gaussmeter displays a decimal value that corresponds to the sum of the binary place values of all set...

Page 54: ...exe cuted The command OPC can be placed at the end of a com mand line in order to synchronize the controller with the command processing The command itself has no function Mode Query Parameter None RS...

Page 55: ...s to the sum of the binary place values of all set bits in this register Mode Command and query Parameter value within the range 0 255 RST value Not relevant Example send SRE LF receive 76 CR LF 7 6 1...

Page 56: ...S EVENt STAT QUES EVENt STAT QUES EVENt STAT QUES EVENt Description Reads out the error byte register The gaussmeter displays a decimal value that corresponds to the sum of the binary place values of...

Page 57: ...levant Example send STAT MEAS EVEN LF receive 2 CR LF 7 6 2 7 6 2 7 6 2 7 6 2 Main Commands Main Commands Main Commands Main Commands 7 6 2 1 7 6 2 1 7 6 2 1 7 6 2 1 MEAS MEAS MEAS MEAS Description Em...

Page 58: ...relevant Example send NULL LF 7 6 2 4 7 6 2 4 7 6 2 4 7 6 2 4 RANGe SET RANGe SET RANGe SET RANGe SET Description The gaussmeter measuring range is preset Mode Command Parameter 0 1 2 3 0 Most sensiti...

Page 59: ...2 7 7 6 2 7 7 6 2 7 READ READ READ READ Description Displays the current measurement Mode Query Parameter None RST value Not relevant Example send READ LF receive 2 546313e 01 CR LF 7 6 2 8 7 6 2 8 7...

Page 60: ...nt Example receive OFF CR LF 7 6 3 2 7 6 3 2 7 6 3 2 7 6 3 2 PEAK MODE PEAK MODE PEAK MODE PEAK MODE Description Selects and interrogates the peak value mode Mode Command and query Parameter OFF SLOW...

Page 61: ...K READ MIN Description The stored minimum peak value is displayed For SlowPeak the smaller peak value of max min for FastPeak the absolute larger peak value with signs for normal measurement 0 is emit...

Page 62: ...e RST value Not relevant Example send PROB NAME LF receive HGM09 Probe T02 047 33 13 CR LF 7 6 4 2 7 6 4 2 7 6 4 2 7 6 4 2 PROB SN PROB SN PROB SN PROB SN Description Interrogates the probe serial num...

Page 63: ...r OFF KEYB COMP OFF No data connection KEYB Keyboard emulation COMP Connection via interface RST value Not relevant Example send PAR USB COMP LF send PAR USB LF receive COMP CR LF 7 6 5 2 7 6 5 2 7 6...

Page 64: ...ng RST value Not relevant Example send PAR PEAK SLOW LF send PAR PEAK LF receive SLOW CR LF 7 6 5 4 7 6 5 4 7 6 5 4 7 6 5 4 PAR ACDC PAR ACDC PAR ACDC PAR ACDC Description Selects the DC or AC field m...

Page 65: ...7 6 5 6 PAR POLDetect PAR POLDetect PAR POLDetect PAR POLDetect Description Switches on off the north south pole display The changes must be stored by the command PAR SAVE if necessary Mode Command a...

Page 66: ...by the command PAR SAVE if necessary Mode Command and query Parameter OFF ON OFF Switch off the battery charging ON Switch on the battery charging RST value Not relevant Example send PAR CHAR OFF LF s...

Page 67: ...e range 0 20 0 20 Display contrast in 5 RST value Not relevant Example send PAR CONT 15 LF send PAR CONT LF receive 11 CR LF 7 6 5 11 7 6 5 11 7 6 5 11 7 6 5 11 PAR SAVE PAR SAVE PAR SAVE PAR SAVE Des...

Page 68: ...SN SW LF receive 180310 CR LF 7 6 6 3 7 6 6 3 7 6 6 3 7 6 6 3 SN HW SN HW SN HW SN HW Description Reads out the hardware version Mode Query Parameter None RST value Not relevant Example send SN HW LF...

Page 69: ...on Table Conversion Table Conversion Table This table shows the relationship between the displayed measuring values Size Unit Display Conversion Mag flux density B SI Tesla T G T 4 10 1 Flux density C...

Page 70: ...ement Data Protocol SCPI standard commands for programmable measuring devices External Interfaces USB 2 0 Display Graphical high contrast LCD contrast adjustable via menu Parameter Memory in Probes St...

Page 71: ...1 kG 1 G 1 kOe 1 Oe 100 kA m 100 A m Measuring Ranges Resolution Fast Pulse Measurement 10 mT 10 T 100 G 100 mG 100 Oe 100 mOe 10 kA m 10 A m Peak Hold tsignal 250 s Standard transversal probe N incl...

Page 72: ...it MAGSYS HAN MAGSYS HAN MAGSYS HAN MAGSYS HAND D D DGAUSSMETER GAUSSMETER GAUSSMETER GAUSSMETER Model Nu Model Nu Model Nu Model Num m m mber ber ber ber Model Nummer R f rence commerciale HGM09s HGM...

Page 73: ...f Warranty Extent of Warranty The warranty already mentioned does not apply for errors due to inadequate or insufficient maintenance on the part of the buyer due to unauthorized modifications or malop...

Page 74: ...ion 41 Discrete Parameters 46 Display 9 22 Display Brightness 38 Display Units 35 E E E E Endings 46 F F F F Fast Peak Value Recording 31 Field strength 69 Flux density 69 Front Side 17 G G G G Gaussm...

Page 75: ...perating Instructions Chapter 12 Index Page 75 75 Switching off 37 Switching on off 24 System Commands 45 T T T T Technical Data 70 U U U U Unit 69 USB 41 USB Interface 20 V V V V Version Remarks 39 W...

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