Car park ceiling with electrode sensors installed


RB15 Datasheet

Datasheet for the Castle Electrodes RB15 Electrode.

General Description

The RB15 Reference Electrode comprises a manganese oxide core containing an alkaline environment. This is contained in a blue nylatron casing with a cementitious mortar cap. The electrode is conditioned to provide a very stable reference electrical potential. The mortar cap ensures good contact with the parent concrete .

RB15 manganese dioxide reference electrodes are connected to a data logger to monitor readings which may be manually downloaded or transmitted remotely via modem to an external ‘off site’ office. Measurements may also be performed by use of a handheld volt meter with high input impedance (>100 M Ω).

The RB15 reference electrode functions as a solid state electrode (no internal gels) and does not require aggressive materials, for example chloride ions, to function.



Nominally 100mm long x 15mm diameter


 Nominally +175mV +/- 20mV wrt to SCE at 200C


 < 3mV in 24 hours

Typically less than +/- 10mV expected in 20 years


Standard cable is XLPE/XLPE blue/blue 2.5mm2.

Alternative is XLPE/PVC blue/blue 2.5mm2

The electrodes can be supplied without cable for attachment on site.

Expected life:

50+ year design life.

Shelf life:

Nominally 12 months.


Dry and constant temperature (between 5° and 45°C).


Each electrode is calibrated before delivery to site and a calibration certificate issued. It is not feasible to check this calibration on site.

RB15 Datasheet

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