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CONTENTS

 

1. 

WALKTEM 2 RELEASE NOTES (WUI version 1.3.7.10) ............................................................................................... 2 

2. 

CENTRE LOOP LAYOUT (TL-1K6, 40x 40m Transmitter Loop) ................................................................................... 3 

A. Lay out the TL-1k6 transmitter loop first: ............................................................................................................. 3 

B. Lay out RC-5 receiver coil next: ............................................................................................................................ 3 

C. Lay out RC-200 receiver loop: .............................................................................................................................. 3 

D. Connect TX loop and RX coils to WalkTEM TX & RX units: ................................................................................... 4 

E. Connect the WalkTEM TX & RX units together: .................................................................................................... 5 

F. Connect external power to the TX (and RX if required): ....................................................................................... 5 

3. 

DAMPING RESISTOR DECISIONS ............................................................................................................................... 6 

4. 

CENTRE LOOP LAYOUT (TL-400, 20X20m Transmitter Loop) .................................................................................... 8 

5. 

CENTRE LOOP LAYOUT (TL-10k HP6, 100x100m Transmitter Loop) ......................................................................... 9 

6. 

CENTRE LOOP LAYOUT (TL-40k HP6, 200x200m Transmitter Loop) ......................................................................... 9 

7. 

TX-60 LAYOUT, CONNECTIONS AND OPERATION ................................................................................................... 10 

8. 

USER INTERFACE AND MEASUREMENT CONFIGURATION ...................................................................................... 12 

9. 

MEASUREMENTS .................................................................................................................................................... 15 

10.  FILE MANAGEMENT & INVERSION .......................................................................................................................... 15 

11.  WALKTEM 2 LAY-OUT DIMENSIONS ....................................................................................................................... 18 

Содержание WalkTEM 2

Страница 1: ... E Connect the WalkTEM TX RX units together 5 F Connect external power to the TX and RX if required 5 3 DAMPING RESISTOR DECISIONS 6 4 CENTRE LOOP LAYOUT TL 400 20X20m Transmitter Loop 8 5 CENTRE LOOP LAYOUT TL 10k HP6 100x100m Transmitter Loop 9 6 CENTRE LOOP LAYOUT TL 40k HP6 200x200m Transmitter Loop 9 7 TX 60 LAYOUT CONNECTIONS AND OPERATION 10 8 USER INTERFACE AND MEASUREMENT CONFIGURATION 12...

Страница 2: ...ed to using the external cradle B Self discharge of Batteries The instrument has some circuitry which is only dormant on power down rather than completely disconnected As such it is advisable to remove the batteries if the instrument is not is use for a long period of time C Rogowski Coil Tests At present the damping resistor selection is a manual process only after running the test the user can p...

Страница 3: ...the transmitter loop to align someone in the middle OR easier walk from the middle of one side toward the middle of the other side measuring the distance as you walk the RC 5 coil is running clockwise when the black connector is on the top right ensure that the RC lead in cable is not coiled and crosses the transmitter loop at 90 or as close as possible C Lay out RC 200 receiver loop use the RC 5 ...

Страница 4: ...able connects the TL 1k6 to the TX unit the black connector attaches to the cable drum and the red connector attaches to the loose end of the loop It is only possible to connect it one way round as the loop end of the 3m lead in cable has one male and one female connector see Section 3 Damping Resistor Decisions for instructions on manually choosing a damping resistor if you intend to use an exter...

Страница 5: ...ct external power to the TX and RX if required the minimum requirement for the TX 8 TX 20 unit is a single 12V battery an additional 12V battery can be connected in series for 24V adding a further 6V battery in series will provide 30V and allow the TX to reach maximum current NOTE when setting up to use 24V or 30V ensure correct connection polarities otherwise there is a risk of damage to the inst...

Страница 6: ...hout any of the internal resistors connected thus it would still be possible to mount a custom resistor externally and review its suitability mounting of an external resistor is covered in Part D of this section The analysis process would be as follows A Set up the instrument with a transmitter loop connect the RX and TX units plus as a minimum the transmitter loop and power on you need an active ...

Страница 7: ...sistor from the drop down menu D Using an external damping resistor if a custom resistance value is desired it is possible to mount one externally in parallel with the transmitter loop use a good quality power resistor that can withstand the load put on it by the transmitter the resistor should be attached to the instrument end of the 3m TX lead in cable right although this image depicts the conne...

Страница 8: ...in but also through a 1 5 Ohm choke resistor on one side of the cable in series with the loop not in parallel This counteracts the low resistance associated with this very short transmitter loop and limits the maximum current to safe levels see Section 3 Damping Resistor Decisions for instructions on manually choosing a damping resistor B Powering the TX a 20x20m transmitter loop should only be po...

Страница 9: ...ions for instructions on manually choosing a damping resistor B Powering the TX a 100m transmitter loop would normally be powered with a minimum of 24V i e 2 batteries 6 CENTRE LOOP LAYOUT TL 40k HP6 200x200m Transmitter Loop A Start by laying out transmitter Loop each side is one complete reel of cable leave the loose end of the loop by the instrument and walk around with the cable drums no RC 5 ...

Страница 10: ...le compatible with the HP6 TX 60 connectors C The TX 60 should be powered by at least 4 batteries One for powering the control electronics cooling fans and at least 3 for supplying the current generator Only using two batteries for the current generator is no different from running the WalkTEM 2 on 24V without the TX 60 More batteries will increase the voltage to a maximum of 250V and create a hig...

Страница 11: ...hen connecting batteries in series A wrong connection can result in equipment damage as well as personal injury Only attempt connection if you understand electrical circuits otherwise seek qualified assistance The standard lead in wire for use with the original WalkTEM used banana plug connectors the WalkTEM 2 and the TX 60 use a heavier gauge wire split spade connectors and screw terminals Origin...

Страница 12: ...g Analyze provides instructions on performing a Rogowski Coil test to assess which damping resistor to use This feature is included on the RX Advanced and an optional extra on the RX Standard Plot will show the results of the Rogowski Coil tests so you can choose the most suitable damping resistor Select which coils and input you will use RC 5 on A is only option on an RX Standard Ext Power shows ...

Страница 13: ... listed by country can be found here other resources are available https en wikipedia org wiki Mains_electricity_ by_country Table_of_mains_voltages_and_freq uencies Accessed 5th October 2020 B Navigate back to the Configuration tab and either use the currently active project a previous project to add additional stations or select New Project Projects are automatically numbered sequentially C Afte...

Страница 14: ...ansmitter loop X would normally be with the RC antenna aligned up the centre of the transmitter loop Y would be with it aligned across the centre of the transmitter loop E Now that the hardware is configured the final step is to choose a suitable script A table is provided below to assist with the choice The Number of Cycles box is how many times the script which in itself contains hundreds of sta...

Страница 15: ...time measurement views ChA All and ChB All will redraw the curve each time a new High Moment Low Moment or Noise measurement is made on Channel A and B respectively In the example here only the RC 5 is being used and thus ChB feeds are not available to view The remaining tabs show only one of the measurement phases High Low or Noise for each channel These refresh the next time one of these measure...

Страница 16: ...istivity views by clicking on the circular selection buttons if a mouse is connected to the instrument Number keys 1 6 will toggle on off the individual data sets This can also be achieved by clicking on the named buttons in the top left of the screen if a mouse is attached The display will automatically fit to the data extents but it is possible to zoom in out using the PgUp PgDn buttons The arro...

Страница 17: ...tically discard poor quality readings and complete the inversion provided there are sufficient good data points available Data points that will be carried forward for the inversion are always coloured whilst those which have been automatically discarded will be greyed out After the inversion has been completed approximately 1 2 minutes a smooth layered model will be displayed with a residual value...

Страница 18: ...P a g e 18 ABEM WALKTEM 2 ABRIGDED USER MANUAL 11 WALKTEM 2 LAY OUT DIMENSIONS Tapes or measuring wheels can be used to layout accurate loops if so desired using the following measurements ...

Страница 19: ...P a g e 19 ABEM WALKTEM 2 ABRIGDED USER MANUAL ...

Страница 20: ......

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