MN15 Reference Electrode
A common method of assessing the corrosion state of reinforcing steel is to
measure the steel potential using a reference electrode.
CPT manufacture a reference electrode, MN15, which is buried in a small hole
formed in the concrete surface. This can then be used to measure the steel
potential either manually, using a high impedance voltmeter, using a datalogger
or remotely using a cellular phone link.
The MN15 reference electrode offers significant advantages versus
conventional electrodes as it is based on a manganese oxide composition:
- High surface area prevents loss of contact with host concrete
- Chloride free - no release of aggressive salts
- Excellent polarisation characteristics - stable potential when current is drawn
- Compact unit facilitates simple installation
Concrete Preservation 