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A – DPM with protective cover
B – Wire connection to structure
C – Porous plug in contact with ground
(Vegetation removed)
Structure-to-Structure Potential Difference Readings
This type of measurement will require the use of two test leads, one supplied with the DPM, the other
available for separate purchase (Item # SUB171). After unscrewing the reference electrode from the
DPM, screw the brass fitting on the end of the SUB171 test lead onto the DPM, in place of the electrode,
and connect the other test lead to the banana jack on the DPM. You would then connect the test leads to
the two separate structures for a potential difference reading.
Cell-to-Cell Potential Difference Readings
A cell-to-cell potential difference reading can be taken using the equipment indicated below.
A – Intermediate Electrode Extension
CAT # 16203
B – Electrode Extension
CAT # 16101
C – Reference Electrode RE-5 or RE-5C
CAT # 15108 or 15210
D – Banana plug-to-alligator clip test lead
