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GMW
THREE AXIS MAGNETIC FIELD SENSORS
Distributed by:
GMW Associates
955 Industrial Road, San Carlos, CA 94070
Tel: (650) 802-8292
Email: sales@gmw.com Web Site: http://www.gmw.com
Manufactured by:
Bartington Instruments Ltd.
10 Thorney Leys Business Park
Witney, Oxford OX8 7GE
England
Tel: 011 44 1993 706565
Email: sales@bartington.com Web Site: http://www.bartington.com/
_________________________________________________________________________________
GMW
955 Industrial Road, San Carlos, CA 94070 Tel: (650) 802-8292 Fax: (650) 802-8298
Email: sales@gmw.com Web site: http://www.gmw.com
BARTINGTON
OPERATION MANUAL
Fax: (650) 802-8298
Fax: 011 44 1993 774813
MAG-03
Issue 20 May 2005
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Summary of Contents for GMW BARTINGTON MAG-03
- Page 1 OPERATION MANUAL Distributed by: GMW Associates 955 Industrial Road, San Carlos, CA 94070 Tel: (650) 802-8292 Fax: (650) 802-8298 Email: sales@gmw.com Web Site: http://www.gmw.com Manufactured by: Bartington Instruments Ltd. 10 Thorney Leys Business Park Witney, Oxford OX8 7GE England Tel: 011 44 1993 706565 Fax: 011 44 1993 774813 Email: sales@bartington.com Web Site: http://www.bartington.com/...
- Page 2 OM 1004 OPERATION MANUAL FOR Mag-03 RANGE OF THREE AXIS MAGNETIC FIELD SENSORS Bartington Instruments Ltd 10 Thorney Leys Business Park Witney Oxford OX28 4GG England Telephone +44 1993 706565 Facsimile +44 1993 774813 E-mail sales@bartington.com Internet http://www.bartington.com/ Bartington Instruments reserves the right to change any part of the design of these products without prior notice.
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Page 3: Table Of Contents
LIST OF CONTENTS INTRODUCTION GENERAL DESCRIPTION ENCLOSURES Mag-03MC Mag-03MCES Mag-03MCFL Mag-03MS Mag-03MSES Mag-03MSS Mag-03IE Mag-03IE Version 2 Mag-03MCTP 3.10 Mag-03MCUP ACCESSORIES Mag-03PSU POWER SUPPLY UNIT Mag-03DAM DATA ACQUISITION MODULE Mag-03SCU SIGNAL CONDITIONING UNIT Mag-03MC-CU CALIBRATION UNIT Mag-03MS-CU CALIBRATION UNIT CABLES Mag-03MC-BR MOUNTING BRACKET MATING CONNECTORS MOUNTING... - Page 4 CARE AND MAINTENANCE MAGNETIC UNITS AND MEASUREMENTS 10.1 CONVENTIONS 10.2 MEASUREMENT UNITS 10.3 CONVERSION TABLE 10.4 VECTOR MEASUREMENTS TECHNICAL SPECIFICATIONS 11.1 SENSORS 11.2 CABLES FIGURES CALIBRATION CERTIFICATES OM1004 ISSUE 20 PAGE 3 OF 30...
- Page 5 LIST OF FIGURES FIGURE 1 Mag-03MC SENSOR OUTLINE WITH MATING CONNECTOR FIGURE 2 Mag-03MCES SENSOR OUTLINE WITH MATING CONNECTOR FIGURE 3 Mag-03MCFL SENSOR OUTLINE FIGURE 4 Mag-03MS SENSOR OUTLINE WITH MATING CONNECTOR FIGURE 5 Mag-03MSES SENSOR OUTLINE WITH MATING CONNECTOR FIGURE 6 Mag-03MSS SENSOR OUTLINE WITH MATING CONNECTOR FIGURE 7...
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Page 6: Introduction
INTRODUCTION This manual describes the operation of the Mag-03 range of three axis magnetic field sensors. These compact high performance sensors with integral electronics provide measurements of static and alternating magnetic fields in three axes. The sensors, alternatively described as magnetometers, convert magnetic flux density, measured in three axes, into a bipolar analog voltage. -
Page 7: General Description
GENERAL DESCRIPTION This section describes the features common to the Mag-03 range of sensors. Where there are exceptions they are described under Section 3 detailing the different types of enclosures. Three fluxgate sensing elements are mounted orthogonally at one end of an enclosure which also contains the electronic circuitry. -
Page 8: Enclosures
Mag-03MS - Figure 4 This square section enclosure is manufactured from reinforced epoxy and the sensing elements are mounted with reference to the base which acts as a datum face. The Z axis is aligned to this reference face to an accuracy of 0.1°. The orthogonality error between the magnetic axes is also 0.1°... -
Page 9: Mag-03Mcup
3.10 Mag-03MCUP - Figure 10 This arrangement is an “unpackaged” version. The sensing elements are encapsulated in a cylindrical enclosure but the electronics printed circuit board is simply coated in silicone rubber and not protected by an enclosure. Two four-way ribbon cables, with a standard length of 140mm but available in lengths to 500mm, connect the sensing elements to the electronics board. -
Page 10: Mag-03Mces
Mag-03MS-CU CALIBRATION UNIT The Mag-03MS-CU is a battery powered unit similar to the Mag-03MC-CU above but for calibration of the Mag-03MS sensors which have a square section. Contact Bartington Instruments for full details. CABLES Cables are available for connection of the three axis range of sensors to the Mag-03PSU, Mag-03DAM or Mag-03SCU. -
Page 11: Other Types
supplied. A thin gasket or a suitable sealant should be used to seal the base of the units against water penetration. The absolute maximum screw penetration depth within the body is 16 mm and this must not be exceeded. Mag-03MSS The Mag-03MSS has a square section pressure housing with three mounting holes, 4 mm in diameter, drilled through the body and counterbored for cheese-headed screws. -
Page 12: Performance
saturation point. The output will remain at the saturation level if the field is increased beyond this point. Asymmetric supplies may be used provided that the minimum and maximum voltages are not exceeded for either polarity. SIGNAL/POWER GROUND The two signal/power ground conductors are connected to a common point within the sensor and the power supply common (power 0 V) should be connected to only one of them. -
Page 13: Cabling
CABLING It is recommended that the connecting cable to the sensor is a six core screened cable. Two cores will be used for positive and negative power supply lines, three cores for output signals and one core for signal common. The power supply ground should be connected via the screen which can be expected to have a low resistance. -
Page 14: Frequency Response
FREQUENCY RESPONSE The typical amplitude and phase response for the Mag-03 range of sensors is shown in Figure 19. The sensors provide a bandwidth of 3kHz with a maximally flat response to 1kHz. NOISE A typical noise plot for the standard version is shown in Figure 20 and for the low noise version in Figure 21. -
Page 15: Care And Maintenance
The output from all fluxgate sensors will contain noise from the driving electronics. For the Mag-03 range this noise is at 15kHz which is well above the bandwidth of the sensors. Where low noise operation is required a filter should always be provided to reject the noise which lies outside the band of interest. -
Page 16: Measurement Units
10.2 MEASUREMENT UNITS Since 1960 the SI (Systeme Internationale) which is derived from the MKS metric measurement system has been universally adopted. However, measurements are still frequently expressed in the older CGS units. For clarity the following relationships may be useful. -
Page 17: Vector Measurements
10.4 VECTOR MEASUREMENTS Each axis produces an analog output Va in response to flux density B in the relationship: Va = B cos ∅ where ∅ is the angle between the flux direction and the direction of the individual sensing element. -
Page 18: Technical Specifications
TECHNICAL SPECIFICATIONS 11.1 SENSORS Mechanical, electrical and environmental specifications Mag-03MC Mag-03MCES Enclosure reinforced epoxy reinforced epoxy Dimensions (mm) 25 diameter x 202 length 25 diameter x 207 length Mounting Mag-03MC-BR bracket Mag-03MC-BR bracket Connector Hirose RM15TRD10P Amphenol 62GB-51T10-7P Mating connector Hirose RM15TPD10S Amphenol 62GB-16J10-7S Operating temperature... - Page 19 Connector pin out - See Figures for versions with flying leads and full details of all types Mag-03MC/Mag-03MSS/ Mag-03MS Mag-03MCES/ Mag-03IE*/Mag-03MCTP Mag-03MSES X out +12V supply X out Y out -12V supply Y out Z out signal/power ground Z out signal/power ground signal/power ground signal/power ground...
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Page 20: 11.2 Cables
Performance specifications (all sensors) Scaling independent parameters ±12V to ±17V Supply voltage ±10V (±12V supply) swings to within 1V of supply Analog output voltage Power supply rejection ratio 5μV/V Output impedance <1Ω Linearity error <0.0015% 0 to 1kHz maximally flat, ±5% maximum above 1kHz Output ripple ±0.5% Calibration accuracy... - Page 21 SENSOR END SIGNAL SUPPLY END Mag-03MC, Mag-03MS Mag-03MCES Mag-03MSS Mag-03IE Mag-03MSES Mag-03MCTP X out Y out Z out Signal/Power ground Signal/Power ground +12V supply -12V supply 8,9,10 8,9,10 8,9,10 For details of cable colours see the figure showing the relevant cable. OM1004 ISSUE 20 PAGE 20 OF 30...
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Page 22: Figure 1 Mag-03Mc Sensor Outline With Mating Connector
Figure 1 Mag-03MC SENSOR OUTLINE WITH MATING CONNECTOR DR0657(2) Figure 2 Mag-03MCES SENSOR OUTLINE WITH MATING CONNECTOR DR0656(2) OM1004 ISSUE 20 PAGE 21 OF 30... -
Page 23: Figure 3 Mag-03Mcfl Sensor Outline
Figure 3 Mag-03MCFL SENSOR OUTLINE DR0745(2) POSITION OF SENSING ELEMENTS 2mm MAGNETIC AXES PASS THROUGH CENTRELINES PIN No. FUNCTION +12V SUPPLY -12V SUPPLY SIGNAL/POWER GROUND SIGNAL/POWER GROUND Z OUT X OUT N.C. Y OUT N.C. D-TYPE ITT CANNON DEM-9P-NMB THIS EDGE & UNDERSIDE FACES ARE THE DATUMS MATING CONNECTOR D-TYPE ITT CANNON DEM-9S-NMB... -
Page 24: Figure 5 Mag-03Mses Sensor Outline With Mating Connector
POSITION OF SENSING ELEMENTS 2mm MAGNETIC AXES PASS THROUGH CENTRELINES PIN No. FUNCTION X OUTPUT Y OUTPUT Z OUTPUT SIGNAL/POWER GROUND SIGNAL/POWER GROUND +12V SUPPLY -12V SUPPLY AMPHENOL FIXED PLUG 62GB-12E10-7P THIS EDGE & TWO UNDERSIDE FACES ARE DATUMS FIXING CENTRES M5-0.8-6H MATING CONNECTOR TO ACCEPT NON-MAGNETIC SCREWS AMPHENOL SOCKET... - Page 25 DIMENSIONS IN MM SENSOR AXIS IDENTIFIED ON RM15TRD10P HIROSE EACH END FIXED PLUG (PINS) PIN No. FUNCTION CYLINDRICAL ELECTRONICS X OUT ENCLOSURE 4-WAY RIBBON CABLE Y OUT Z OUT SIGNAL POWER GROUND SIGNAL POWER GROUND SENSING +12V SUPPLY INDEPENDENTLY DIRECTION -12V SUPPLY ENCAPSULATED 8,9,10...
- Page 26 Figure 9 Mag-03MCTP VERSION SENSOR OUTLINE WITH MATING CONNECTOR DR0757(3) Figure 10 Mag-03MCUP VERSION SENSOR OUTLINE DR0758(2) OM1004 ISSUE 20 PAGE 25 OF 30...
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Page 27: Figure 11 Mag-03Mc Cable
Figure 11 Mag-03MC CABLE DR0748(2) Figure 12 Mag-03MCES CABLE DR0756(2) OM1004 ISSUE 20 PAGE 26 OF 30... -
Page 28: Figure 13 Mag-03Ms Cable
Figure 13 Mag-03MS CABLE DR0996(2) Figure 14 Mag-03MSES CABLE DR1257(2) OM1004 ISSUE 20 PAGE 27 OF 30... -
Page 29: Figure 15 Mag-03Mss Cable
Figure 15 Mag-03MSS CABLE DR1017(2) Figure 16 Mag-03MC-BR MOUNTING BRACKET DR0746(2) OM1004 ISSUE 20 PAGE 28 OF 30... -
Page 30: Figure 17 Mag-03 Interface Schematic
CONNECTOR 270mA +12V SUPPLY OUTPUT (Zo<1 Ω ) X OUT µ µ 62mA (20V) Y OUT 62mA Z OUT 62mA SIGNAL/POWER GROUND µ µ SIGNAL/POWER (20V) GROUND 270mA -12V SUPPLY Figure 17 Mag-03 INTERFACE SCHEMATIC DR1006(3) Figure 18 Mag-03 TYPICAL FREQUENCY DEPENDENT AMPLITUDE &... - Page 31 Figure 19 DR1008(2) Figure 20 DR1009(2) OM1004 ISSUE 20 PAGE 30 OF 30...
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