Wiki source code of ERT

Last modified by Michael Sibayan on 2022/05/03 16:48

version	line-number	content
1.1	1	= Overview =
	2
	3	The ERT system is composed of 120 electrodes. They are arranged in 24 stacks of 5 electrodes. A diagram of the electrode stack is shown below.
	4
	5	= Calculation Notes =
	6
	7	There are no calculation notes for these sensors.
	8
	9	= Wiring Diagram =
	10
	11	[[image:ERT-Schematic.png\|\|style="display: block; margin-left: auto; margin-right: auto; width="]]
	12
	13	= Other Notes =
	14
	15
	16	The electrodes are connected via gold plated pins (Millmax, part # 3601-1-07-21-00-00-08-0) to 22 AWG (7/30 strand) tinned copper wire. The wire is part of a 5-conductor cable (AlphaWire, part # 1175C, rated at 300V) color coded as follows:
	17
	18	1 – Green – closest to surface
	19	2 – Orange
	20	3 – Red
	21	4 – White
	22	5 – Black – closest to deck
	23
	24	The cable is PVC jacketed. In order to counter any negative effects of PVC in the soil, the cable is sleeved in 5/16” Teflon tubing. This creates a physical barrier between the PVC jacket and the soil. Pins are glued in place using DP190 or DP110 epoxy from 3M, joints are connected using DP190