Bartington PSU1 Operation Manual

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Bartington PSU1 Operation Manual | Manualzz

www.bartington.com

Innovation in Magnetic Field Measuring Instruments

Operation Manual for

PSU1 Power Supply Unit

BARTINGTON INSTRUMENTS

Table of Contents

1. Legal Notices

1.1. Copyright

1.2. Trademarks

2. How to Use this Manual

2.1. Symbols Glossary

2.2. Technical Specifications

3. Safe Use

4. Applicability

5. Compatible Magnetometers

6. Introduction to the PSU1

6.1 Summary

6.2. Functional Description

6.2.1. Power

6.2.2. Signal Buffering

6.2.3. Filtering

7. PSU1 Inputs, Outputs and Controls

7.1. Back Panel Connections and Controls

7.2. Front Panel Controls

8. Installing the PSU1

8.1. Installing and Replacing the Internal Batteries

8.2. Initial Charging of the Battery Cells

8.3. Location of the Equipment

8.3.1. Potentially Hazardous Locations

8.3.2. Orientation

8.3.3. Temperature

8.3.4. Proximity to Other Equipment

8.4. Connecting the Equipment

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8.5. Initial Settings 14

8.5.1. Magnetometer Output Type Selection

9. Using the PSU1

9.1. Environmental Precautions

9.2. Switching On and Off

10. Troubleshooting

11. Care and Maintenance

11.1. Fuses

11.2. Calibration

11.3. Cleaning

12. End of Life Disposal 17

12.1. Waste Electrical and Electronic Equipment (WEEE) Regulations 17

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BARTINGTON INSTRUMENTS

1. Legal Notices

1.1. Copyright

The copyright of this document is the property of Bartington Instruments Ltd.

1.2. Trademarks

Bartington® is a trademark in Australia, Canada, China, the European Community, India, Japan, the countries of the Madrid Agreement & Protocol, Norway and the United States of America.

2. How to Use this Manual

This manual provides the information necessary to help customers install and operate the PSU1

Power Supply Unit from Bartington Instruments.

Photographs of key components are included, labelled with numbers. A number in the text in square brackets [ ] refers to that label on the nearest photograph above it.

Bartington Instruments cannot advise on the integration of this equipment with any third party products.

2.1. 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: Provides useful supporting information on how to make better use of your purchase.

2.2. Technical Specifications

Technical Specifications for this product can be found in the appropriate datasheets available on the Bartington Instruments website at www.bartington.com/psu1-power-supply-unit.html

.

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BARTINGTON INSTRUMENTS

3. Safe Use

WARNING: The PSU1 is fitted with AA size NiMH (Nickel Metal Hydride) rechargeable batteries. Only AA size rechargeable batteries, which are specified as compatible in the relevant datasheet, can be used in this product.

WARNING: The fitting of non-approved battery cells may be dangerous and could affect the safety of users, damage the equipment and also invalidate the terms and conditions of the

Warranty.

WARNING: The PSU1 can also be powered by mains electricity and contains uninsulated parts. Ensure that the unit is properly earthed at all times. Only properly trained personnel should open the unit.

WARNING: These products are not qualified for use in explosive atmospheres or life support systems. Consult Bartington Instruments for advice.

4. Applicability

Caution: This manual applies only to the PSU1 Power Supply Unit. For the earlier

Mag-03PSU, please use the manual supplied with that unit or contact the Bartington

Instruments helpdesk.

5. Compatible Magnetometers

Caution: Use of incompatible magnetometers may cause damage to the PSU1 and/or the magnetometer. The PSU1 is designed to operate with various Bartington Instruments magnetometers. For the current list, refer to the datasheet.

6. Introduction to the PSU1

6.1 Summary

The PSU1 provides a battery backed power supply of ±12V for the Mag-03 series of three-axis fluxgate magnetic field sensors. It also contains filters for the analogue outputs of the sensor.

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6.2. Functional Description

6.2.1. Power

The PSU1 will supply ±12V DC for powering a range of magnetometers. Please refer to the datasheet for the latest list of compatible products. The power is supplied from the internal, rechargeable batteries or from the plug-in power adapter, which is also used to charge the PSU1 batteries.

Note: The PSU1 will operate without any battery cells being installed. To install, or replace

defective cells, refer to section 8.1: Installing and Replacing the Internal Batteries

.

6.2.2. Signal Buffering

Single-ended output signals on BNC connectors are buffered from differential or single-ended output magnetometers.

After filtering, each analogue signal is fed to the appropriate BNC connector via a low impedance buffer. These buffers allow long cables and low input impedance data acquisition systems to be used. Refer to the appropriate datasheet for maximum loads.

The output common return is also buffered to eliminate crosstalk due to signal currents sharing the Va common return. A high impedance AC path is also provided between the Va common and cable screen to improve AC noise performance.

6.2.3. Filtering

Filtering is provided by a low-pass filter and selectable high-pass filter for DC or AC coupling.

A low pass and a high pass filter are included in each of the channels for the signals from the X,

Y and Z axes of the sensor. Refer to the appropriate datasheet for the frequency response of the filters.

The low pass filters remove the high frequency noise components of the signal from the sensor.

The high pass filters are intended to isolate the DC or static field component so that the alternating components above this frequency can be measured or analysed.

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7. PSU1 Inputs, Outputs and Controls

7.1. Back Panel Connections and Controls

1 2 3

5 4

Key

1. X Signal Conditioned Output.

2. Y Signal Conditioned Output.

3. Z Signal Conditioned Output. The three BNC connectors carry the conditioned analogueue output voltages. The conditioned outputs are the magnetometer X, Y and Z signals after they have been modified by the low/high pass filters and, if a balanced output magnetometer is connected, converted to single-sided signals..

4. Space for unique serial number.

5. Magnetometer Socket. This multi-pin socket is for the connection of the magnetometer cable.

Note: Ensure correct orientation of the connector (indicated by the cut-out on the connector body aligning with the notch in the socket).

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7.2. Front Panel Controls

6 7 8 9

11 10

Key

6. Magnetometer Output Type Selector Switch

Balanced (out)

Unbalanced (in)

Caution: This switch must be set to match your magnetometer output type to ensure

correct results (see Section 8.5.1: Magnetometer output type selection

)

7. DC/AC Coupling (High Pass Filter (HPF) Control)

DC (out)

AC (in)

8. Charge LED

9. ON / OFF LED

10. On/Off Switch

11. Socket for external charging adapter

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8. Installing the PSU1

8.1. Installing and Replacing the Internal Batteries

To install the battery cells, use the following procedure.

C

A B

Key

A. Enclosure lid retaining screw.

B. Enclosure lid retaining screw.

C. Earth lead fixing (do not remove)

1. Place the PSU1 on a suitable surface with the underside facing up and the two enclosure lid retaining screws nearest to you.

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2. Using a flat-bladed screwdriver of the appropriate size, fully loosen screw [A] to allow the edge of the lid to clear the enclosure end cap.

3. Fully loosen screw B and the lid of the enclosure will lift due to the internal springs.

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BARTINGTON INSTRUMENTS

4. Lift the lid and place aside to gain access to the battery cell compartment.

5. Insert each cell into the compartment in turn. Always fit the negative end of the cell first.

Press the cell back against spring pressure until the positive terminal can be located in the holder.

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6. When all five cells are in place, locate the back edge of the lid in the enclosure.

7. Tighten screws [A] and [B] in any order.

8. To remove discharged or defective cells follow the above procedure.

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8.2. Initial Charging of the Battery Cells

To charge the PSU1 battery, connect the mains charger and switch on the mains supply. The charging LED [8] will begin to flash, indicating that “fast charging” is taking place. Once the fast charge cycle has completed, the LED will stop flashing and be lit (ON) continuously to indicate

“trickle charging” is ongoing.

Note: When battery cells are inserted for the first time, they should be continuously charged for 16 hours to ensure full capacity.

Note: The PSU1 can be used whilst charging the battery cells or directly from mains power without any battery cells being installed. However the outputs may carry some charger noise.

Note: If the PSU1 is powered by the mains charger with no batteries cells installed then the charging LED may flash. This is normal and can be ignored.

Note: To prepare for long periods away from a charging source, battery cells may be precharged and used to replace discharged cells in the field.

8.3. Location of the Equipment

8.3.1. Potentially Hazardous Locations

WARNING: The charger supplied with this equipment is powered by mains electricity. It should not be used in wet or damp locations, where water may enter the unit and create a safety hazard.

8.3.2. Orientation

The PSU1 can be orientated horizontally or vertically.

8.3.3. Temperature

To minimise temperature induced drift effects, position the PSU1:

• in a constant ambient temperature

• out of direct sunlight.

8.3.4. Proximity to Other Equipment

The PSU1 contains no high frequency electronics likely to cause emissions which could cause interference with other equipment. The unit is unlikely to be affected by interference from other equipment in the normal operating environment.

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Note: The PSU1 is inherently magnetic and should, therefore, be sited as far from any magnetometers as possible.

8.4. Connecting the Equipment

Caution: Connection between the magnetometer and the power supply should not be made or broken with the power supply switched on as this could cause damage to the magnetometer.

Connect the equipment in the following sequence:

1. Ensure the ON/OFF switch [10] is OFF (position “0”).

2. Connect the magnetometer to the PSU1 magnetometer socket. Ensure the connector pins are correctly aligned with those in the socket. The locking ring should be hand-tightened only.

3. Connect BNC outputs to your external equipment, as required.

8.5. Initial Settings

8.5.1. Magnetometer Output Type Selection

Before switching on the equipment, set the magnetometer output type selector switch to the correct position for your magnetometer. Refer to the appropriate magnetometer datasheets.

9. Using the PSU1

9.1. Environmental Precautions

Refer to the Mag-03 datasheet at www.bartington.com/Literaturepdf/Datasheets/Mag-03%20

DS0013.pdf

for maximum environmental, electrical and mechanical ratings for the PSU1.

Caution: Exceeding the maximum environmental ratings may cause irreparable damage to the equipment.

9.2. Switching On and Off

Caution: Connect the magnetometer before switching on the PSU1, as connecting a live cable to the magnetometer may cause damage. Similarly, switch off the PSU1 before disconnecting the magnetometer.

With the ON/OFF switch [10] ON (position “1”), the ON/OFF LED [9] will be continuously lit (ON).

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Note: For best results, after switching on the power, leave the PSU1 for 20 minutes for the internal temperature to stabilise, before performing any measurements.

10. Troubleshooting

If the PSU1 exhibits unexpected behaviour, please check possible causes in the following table:

Fault

No power output from the

PSU1

PSU1 does not charge

PSU1 does not hold its charge (reduced battery operation)

PSU1 stuck in AC or DC coupling mode

PSU1 stuck in Balanced or

Unbalanced mode

One or both LEDs do not light correctly

Possible Cause

Battery flat

Battery expired

Battery not fitted

None of the above

Failed 12V charger

Battery not fitted

None of the above

Batteries expired

Defective component

Defective component

Defective component

Solution

Recharge

Replace batteries and charge

Fit batteries and charge

Return to Bartington

Instruments for repair

Replace charger

Fit batteries and charge

Return to Bartington

Instruments for repair

Replace batteries and charge

Return to Bartington

Instruments for repair

Return to Bartington

Instruments for repair

Return to Bartington

Instruments for repair

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With a sensor connected, all output signals are faulty

Coupled incorrectly

Balance mode set incorrectly

Defective sensor cable

With a sensor connected, one or two output signals are faulty

Sensor defective

PSU1 defective

Defective sensor cable

Sensor defective

PSU1 defective

Check position of AC/DC coupling switch

Check position of balanced/ unbalanced mode switch

Check sensor cable using relevant datasheet. Return to Bartington Instruments if found to be defective

Return PSU1 and sensor to

Bartington Instruments for repair

Return PSU1 and sensor to

Bartington Instruments for repair

Check sensor cable using relevant datasheet. Return to Bartington Instruments if found to be defective

Return PSU1 and sensor to

Bartington Instruments for repair

Return PSU1 and sensor to

Bartington Instruments for repair

If the solutions suggested above do not fix the fault, contact the Bartington Instruments helpdesk.

11. Care and Maintenance

The PSU1 requires no routine maintenance. There are no user serviceable parts.

Caution: No attempt should be made by a user to repair the unit. Repairs by unauthorised people may be dangerous and could affect the safety of users, damage the equipment, and also invalidate the terms and conditions of the Warranty.

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11.1. Fuses

As a safety feature the PSU1 is fitted with a thermal fuse. If the PSU1 overheats, which could occur as a result of the fitment of incorrect battery cells, the charging circuit will be permanently isolated. The PSU1 must be returned to Bartington Instruments for checks and repair.

11.2. Calibration

No calibration is required.

11.3. Cleaning

Caution: Disconnect the electrical supply before performing any cleaning operation.

Periodic cleaning is not normally required.

If the system becomes soiled and cleaning is necessary:

1. Use a damp cloth to clean the outer surfaces.

2. Use an air duster to blow debris from the connectors.

Caution: Ensure water does not enter the system. The system must be completely dry before the electrical supply is reconnected.

Caution: Never use chemicals, such as solvents, when cleaning the PSU1.

Caution: Take particular care when cleaning around electrical connections. Bent or damaged pins may cause the magnetometer to malfunction.

12. End of Life Disposal

This product should not be disposed of in domestic or municipal waste. For information about disposing of this product safely, check local regulations for disposal of electrical / electronic products.

12.1. Waste Electrical and Electronic Equipment (WEEE) Regulations

This product complies fully with Restriction of the Use of Certain Hazardous Substances in

Electrical and Electronic Equipment (RoHS) and WEEE Regulations current at the time of writing.

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Bartington Instruments Limited

5, 10 & 11 Thorney Leys Business Park

Witney, Oxford, OX28 4GE, England

T: +44 (0)1993 706565

F: +44 (0)1993 774813

E: sales @ bartington.com

The specifications of the products described in this brochure are subject to change without prior notice. Bartington® is a registered trademark of Bartington Instruments Ltd.

www.bartington.com

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