RM Frobisher (1986) Ltd

Pseudosection kit (Manual) information

RM Frobisher Pseudosection kit Pins RM Frobisher Pseudosection kit Pins and Connections RM Frobisher - Reading Template RM Frobisher - Section Kit Probes


RM Frobisher TAR-3 Pseudosection Kit

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

The Pseudosection Kit comprises of:

  1. A Software up grade (for existing TAR-3 Meters)
  2. Thirty (350mm, 8mm diameter) stainless steel measurement Pins/Probes - Thirty probes in total
    Each probe weighs 0.185kg (30 probes weigh 5.5kg). (Other quantities are available)
  3. Two Extension Leads (6.5m long with a jack plug and socket).
    Used with the Two cables supplied with the TAR-3 Resistance Meter kit
  4. Two 4mm Insulated Crocodile Clip - Black
  5. Two 4mm Insulated Crocodile Clip - Red
TAR-3 Probe Linr Information
Figure (1) TAR-3 Resistance Meter Pseudosection Probe Line - The 30 probes can be walked down the line to create pseudosections 99 probes long

This is a manual system. Users:

  1. Create Wenner alpha array TPE file 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. Template Files can also be created online - 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,
    • Enter the new 'Line Mode' and select the Template File they wish to use,
    • The operator connects the leads to the probes in the order displayed on the TAR-3's LCD Display
    • 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:

Listing (1) The TPE input file. TPE files can contain Comments '#'
Line No= 6
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
Listing (2) A sample of the output produced by the TPE file in Listing (1)

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. RM Frobisher - TAR-3 Line Mode Screen
The TAR-3 unit does not validate the file - it 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.
The output text 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 existing sectioning software (RES2DINV, etc).
The probes/pins have a 4mm diameter hole in the end and can accept a jack 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.
TAR-3 Probe Line Information
Figure (3) The cables are walked down the line.


The TAR-3 Array Bar Kit

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

Kit Contents

  • Array Bar, 1.5m with four 18mm diameter holes (1.6kg)
  • Red 4mm plug to 4mm plug cable (1.8m), One off
  • Blue 4mm plug to 4mm plug cable (1.8m), One off
  • 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
  • Washer 8mm hole Std size, eight off
The Array Bar Kit does not contain probe pins - use the probe pins supplied with the TAR-3 Resistance Meter kit
TAR-3 Wenner Alpha Array
Figure (1) TAR-3 Resistance Meter Array Bar (Wenner alpha)