TAR-3 Accessories

TAR-3 Line Mode Template
Section Pins
Pins
Pin_and_Jack_480
The output from the TAR-3 Resistance Meter Pseudosection Mode is compatible with all interpretation/analysis software!

The Pseudosection Kit comprises of:

  • A TAR-3 Meter with Line Mode Software (LM)
  • Thirty (350mm, 8mm diameter) stainless steel measurement Pins/Probes. Each probe weighs 0.185kg (30 probes weigh 5.5kg).
  • Two Extension Leads (6.5m long with a jack plug and socket). Used with the Two cables supplied with the TAR-3 Resistance Meter System
  • Two 4mm Insulated Crocodile Clip – Black
  • Two 4mm Insulated Crocodile Clip – Red
Probe Line
Using the 30 probes, section lines of 99 probes can be achieved without having to repeat readings

This is a manual system.

  1. Create Wenner alpha array template file (TPE) using the TAR-3 Unit! Just enter the total number of probes in the LINE (n) and the maximum probe spacing, (c) in the settings and the TAR-3 will create the template file.
  2. You can also create a custom template using your PC – you will need to know:
    • The number of probes you have
    • The length of the Pseudosection Line (in multiples of probe separations, a).
      The probe separation, a can be 0.25m, 0.5m, or 1.0m etc depending on your interpretation software
    • The maximum multiple of the probe separation (c)In addition to the Wenner Alpha Array other array configurations can be created (Double-Dipole, Schlumberger etc)
    • Copy the Template File on to the SD Card – up to 99 Template Files can be stored on the card,
  3. Enter the Line Mode and select the Template File you wish to use,
  4. Connect the leads to the probes in the order displayed on the TAR-3’s LCD Display
  5. The results are logged and stored on the SD Card in a text file using a copy of the Template File

Reading templates are entered position by position in the following format:

No.,C1,P1,P2,C2,Pos,C,?
:01,01,02,03,04,0.0,0.5,?
:02,02,03,04,05,0.5,0.5,?
:03,03,04,05,06,1.0,0.5,?
...
26,01,03,05,07,0.0,1.0,?
27,02,04,06,08,0.5,1.0?
...

Line No= 6
0.5
1
305
0
0
0	0.5	11.4033
0.5	0.5	11.0528
1	0.5	12.4403
...
0	1.0	5.8020
0.5	1.0	5.1053
...

The TPE file above would produce the output above where ? has been replaced with actual readings

The position of each probe is displayed on the TAR-3 Resistance Meter during use and offer real time information on the correct cable connections.

Where the readings are taken/displayed sequentially based on ‘No.’ The ‘Pos’ is used to order the results in the output. This enables readings to be reordered when the line is completed.

The TAR-3 unit reads the information and displays it on the LCD screen – any probe combination can be used. Wenner (alpha), Double-Dipole or Schlumberger, etc.

Lines can be up to 99 probes long.

Section from Res2dinv
Section from Res2dinv

The output text DAT file is compatible with RES2DINV or RES2DINV and can be conver/ted to any other format using our online conversion/formatting tools.

The TAR-3 Resistance Meter Section kit and software is a great advance from using a meter with pen and paper. Templates can be download or created enabling users to quickly (and accurately) repeat ‘Lines’ Results can be merged using Microsoft Excel® or other spread-sheet or outputted in any format using our on-line tools. This is a true ‘Section’ tool.

No dummy lines or odd shaped grids needed.

The data is also stored in a ‘binary’ format (as a backup copy) and can be unpacked to a format compatible with other sectioning software.

The probes/pins have a 4mm diameter hole in the end and can accept a 4mm plug. For speed crocodile clips are supplied enabling cables to be speedily ‘walked’ along the probes in the section.

NB The TAR-3 Meter measures the apparent (actual) resistance. Users should use the appropriate scaling factor to calculate the resistivity if required.

The TAR-3 Resistance Meter Line Mode can process 999 lines/readings which is enough for lines of Ninety-Nine probes and Nine deep which requires at least Twenty-Eight probes (856 readings in total). 856 readings, at one reading per minute, is over Fourteen hours work (nonstop). Two (or more) day’s work can be combined quickly and safely using a text editor.

Section from Res2dinv
Typical Probe Positions and Spacing

The TAR-3 Array Bar Kit (1.5m)

An addition to a TAR-3 Resistance Meter is the Array Bar kit (1.5m)

Array Bar Kit Contents

  • Array Bar, 1.5m with four 18mm diameter holes (1.6kg)
  • Red 4mm plug to 4mm plug cable (1.8m), One off (972518702)
  • Blue 4mm plug to 4mm plug cable (1.8m), One off (972518701)
  • Insulation Bush, four off
  • M8, 120mm Stainless Steel bolts, three off (SEBF-M8-120-A2)
  • M8 Stainless Stainless nuts, four off (HPN-M8-A2)
  • M8 Stainless Stainless lock (half) nuts, six off (HFN-M8-A2)
  • Washer 8mm hole 25mm Diameter, eight off (HYW-M8-25-A2)
  • Washer 8mm hole Std size, eight off (HPW-M8-A2)

The Array Bar Kit does not contain extra probes. Use the probes supplied with the TAR-3 Resistance Meter kit

The Wenner Array Bar
The Wenner Array Bar

The TAR-3 Extension Bar Kit (1m)

An addition to a TAR-3 Resistance Meter is the Extension Bar kit (1.0m)

TAR-3 1m Kit Contents

  • Extension Bar, 1.0m with four 18mm diameter holes (1.0kg)
  • Insulation Bush, four off
  • M8, 120mm Stainless Steel bolts, three off (SEBF-M8-120-A2)
  • M8 Stainless Stainless nuts, four off (HPN-M8-A2)
  • M8 Stainless Stainless lock (half) nuts, six off (HFN-M8-A2)
  • Washer 8mm hole 25mm Diameter, eight off (HYW-M8-25-A2)
  • Washer 8mm hole Std size, eight off (HPW-M8-A2)

The 1m Extension Bar Kit does not contain extra probes or cables. Use the probe and cables supplied with the TAR-3 Resistance Meter.

TAR-3 Extension Bar (1m)
TAR-3 1m Extension Bar (1m)

Note: The spacing of the remote probes should be 1.0m and the recommended minimum separation between the two sets of probes should be 30m (30 * 1m).