Nace CP 1 - Page 90

Basic Chemistry and Basic Corrosion Theory 2:33
CP 1 – Cathodic Protection Tester Course Manual
© NACE International, 2000
02/01/05
Results
Meter Positive Lead Meter Negative Lead Measured Voltage
Drop(mV)
Copper Steel
Steel Copper
Zinc Steel
Steel Zinc
Copper Zinc
Zinc Copper
Meter Positive
Lead
Meter Negative
Lead
Direction of
Conventional Current
in External Circuit
Which metal
is the anode?
Copper Steel
to
Steel Copper
to
Zinc Steel
to
Steel Zinc
to
Copper Zinc
to
Zinc Copper
to