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BARTINGTON INSTRUMENTS

 

Page 3 of 13 OM2808/3

1. About this Manual

This document describes the installation, operation and maintenance of the Mag628, Mag629 
and Mag669 three-axis aerospace magnetometers.It should be read in conjunction with product 
brochure 

DS2808

, which can be found on the product page on the Bartington Instruments 

website at 

www.bartington.com

.

Note that failure to follow the instructions in this manual may invalidate your product’s warranty. 
If in doubt, do not hesitate to contact Bartington Instruments.

1.1. Symbols Glossary

The following symbols used within this manual call your attention to specific types of 
information:

WARNING: 

Indicates a situation in which serious bodily injury or death could result if the 

warning is ignored.

Caution: 

Indicates a situation in which bodily injury or damage to your instrument, or both, 

could result if the caution is ignored.

Identifies items that must be disposed of safely to prevent unnecessary damage to the 
environment.

Note: 

A note provides useful supporting information and sometimes suggests how to make 

better use of your purchase.

2. Safety Instructions

2.1. Important Information

Note: 

Early versions of the Mag629 used a Hexavalent Chrome (Cr(VI)) conformal coating, 

with an epoxy outer layer. The Cr(VI) coating has been phased out as a result of the 
changing requirements of environmental legislation. See 

Hazardous Materials

.

2.2. Hazardous Materials

2.2.1. Applicability

Note: 

Warnings about the hazards of contact with Hexavalent Chrome (Cr(VI)) apply only 

to Mag629 magnetometers with 

serial numbers from 1 to 33 inclusive

. No other Mag629s 

contain Cr(VI).

Summary of Contents for Mag628

Page 1: ...Operation Manual for Mag628 629 and Mag669 Three Axis Aerospace Magnetometers ...

Page 2: ...iting the Magnetometer Environment Recommendations 5 4 2 Connection Recommendations 6 4 2 1 Cables and connections 6 4 2 2 Pre Installation Tests 7 4 3 Mounting Recommendations 8 4 4 Installation 8 4 5 Post Installation Testing 9 5 Using the Mag628 Mag629 and Mag669 9 5 1 Operation 9 5 2 Magnetic Hysteresis 9 5 3 Environmental Precautions 9 6 Troubleshooting 10 7 Care and Maintenance 11 7 1 Cleani...

Page 3: ... or death could result if the warning is ignored Caution Indicates a situation in which bodily injury or damage to your instrument or both could result if the caution is ignored Identifies items that must be disposed of safely to prevent unnecessary damage to the environment Note A note provides useful supporting information and sometimes suggests how to make better use of your purchase 2 Safety I...

Page 4: ...ned specifically to meet the environmental requirements of aerospace applications with applications such as vector compensation in airborne magnetometry Refer to the product brochure for specifications The two part construction consists of a sensor head assembly with integrated cable and a separate electronics module The sensing head contains the three concurrently sensing fluxgates arranged along...

Page 5: ...28 Mag629 or Mag669 is to be installed it is important to avoid or compensate for local magnetic effects In general Site the magnetometer several tens of metres from very large ferromagnetic objects that could become magnetised and create fields exceeding the measuring range of the sensor Avoid siting the sensor near any ferromagnetic objects that may be subjected to the effects of magnetic hyster...

Page 6: ...d mating connector you will need to refer to outline drawing DR2591 for cable and connector details pinouts etc Interface The electronics assembly is plugged directly via PL1 and PL2 onto the customer s electronics PCB motherboard using connectors and screws detailed in outline drawing DR2591 Power supplies Caution Power is supplied by the customer as per the product brochure Current is specified ...

Page 7: ...o ensure the correct pins have been allocated to the conductors and there are no open or high resistance circuits Note Cable resistance will vary refer to the product brochure for the expected values b Test the cables at the connectors to ensure there are no short circuits between the conductors 2 Check the power supply output voltage using a voltmeter Refer to the product brochure for the expecte...

Page 8: ...tion Once the sensor head and electronics module have been installed as required route the sensor cable so that the minimum bend radius is 75mm 3 inches in the most flexible plane see Connection Recommendations Once in place secure the cable at sufficient points along the length of the cable to avoid excessive flexing Caution Mag629 Take care to align the cable to the connector correctly to avoid ...

Page 9: ... an analogue voltage on each of three channels in response to the applied magnetic field 5 2 Magnetic Hysteresis The Mag628 Mag629 and Mag669 are designed to have an extremely low magnetic hysteresis However Bartington Instruments recommends your magnetometer is not subjected to magnetic fields greater than their stated measuring range for extended periods as this could alter the DC offset If this...

Page 10: ...kely causes of failure for Mag628 Mag629 and Mag669 and their solutions are detailed in the following table Function Failure Symptom Failure Cause Failure Analysis severity and solution Output signals for one or more axes Output floats to saturation close to supply rails Severanceor uncouplingofsensor headtoelectronics unitcable Major failure will immediately be detected by operator Output goes hi...

Page 11: ...ce No user repair or servicing is possible For further details refer to the section on Troubleshooting 7 1 Cleaning the Mag628 Mag629 and Mag669 Use water and mild soap to remove grime from external surfaces Caution Never use chemicals such as solvents when cleaning the sensor head or Mag629 enclosure Caution Take particular care when cleaning around electrical connections Bent or damaged pins may...

Page 12: ... of writing the Mag628 Mag629 and Mag669 comply fully with current RoHS restriction of the use of certain hazardous substances in electrical and electronic equipment regulations but this manual retains WARNING information as a reference for users of the earlier versions of Mag629 specified by Serial Number in the section on Hazadous Materials later in this manual This product electrical and electr...

Page 13: ...gton Instruments Limited in the following countries United Kingdom Australia Brazil Canada China European Union India Japan Norway and the United States of America Bartington Instruments Limited 5 Thorney Leys Business Park Witney Oxford OX28 4GE England www bartington com T 44 0 1993 706565 F 44 0 1993 774813 E sales bartington com ...

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