Using the TAR-3 Resistance Meter with Array Bar

In addition to a TAR-3 Resistance Meter kit you will need a TAR-3 Array Bar kit (1.5m)

Kit Contents

1. Array Bar, 1.5m with four 18mm diameter holes (1.6kg)
2. Red 4mm plug to 4mm plug cable (1.8m), One off
3. Blue 4mm plug to 4mm plug cable (1.8m), One off
4. Insulation Bush, four off
5. M8, 120mm Stainless Steel bolts, three off (SEBF-M8-120-A2)
6. M8 Stainless Stainless nuts, four off (HPN-M8-A2)
7. M8 Stainless Stainless lock (half) nuts, six off (HFN-M8-A2)
8. Washer 8mm hole 25mm Diameter, eight off
9. 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

Assembling the Array Bar - Wenner Alpha Array

• The Array Bar is attached to the TAR-3 Frame using the P1 and P2 probes. (see figure 1) above.
• Group P1 and C1 on the opposite side to C2 and P2.
• Use the locking nuts on P1 and P2 - remember to adjust the length of P1 and P2 so that they protrude further than C1 and C2.
• P1 and P2 should penetrate the ground before C1 and C2!

Note: The Array bar and two extra probes weigh 2kg more than the standard Twin probe unit. (each probes weighs 0.185kg)

Twin Probe - 1.5m probe Separation using the Array Bar

NB The remote probe separation should be 1.5m (not 0.5m!)
Note The distance from the remote probes should be 30 x 'Probe separation' which is 30 x 1.5m = 45m. Use the TAR-3 extension lead to ensure the remote probes are at a distance of '30 times' (45m)

• The Array Bar is attached to the TAR-3 Frame using the M8, 120mm bolts. (see figure 2) above.
• Use one of the 1.8mm Red leads supplied in the kit array bar kit and the 1.8m Blue lead supplied with TAR-3 kit

The layout and routing of the leads is shown schematically - use the Velcro cable ties to attach to the frame and Array Bar.
The TAR-3 Resistance Meter Array Bar kit is an addon unit for users wishing to use a Wenner Array probe configuration. The Array Bar kit contains all the extra equipment needed. The kit uses the probes supplied with the TAR-3 Resistance Meter kit.