Product Data Sheet Show all documents

Sika® FerroGard® MN-15 RE

Reference electrode for corrosion monitoring

Sika® FerroGard® MN-15 RE is a manganese dioxide based long life reference electrode used to measure steel potentials in reinforced concrete and steel framed structures. The electrode measures the effectiveness of impressed current / galvanic cathodic protection systems and monitors steel corrosion activity. The Sika® FerroGard® MN-15 RE reference electrode comprises of a core of manganese oxide encased in a polyethylene double walled tube which is capped with a cementitious plug.  The connection from the reference electrode is incorporated into an epoxy filled IP68 gland to maintain long term integrity. Sika® FerroGard® MN-15 RE operates as a solid state electrode and does not require the addition of aggressive materials, such as chloride salts to initiate operation.  

  • Chloride free
  • Exceptional polarisation characteristics
  • Compact construction
  • Supplied electrode potentials ±20mVt
  • Long life (>50 years)
  • No release of aggressive salts
  • Reliable long term performance
  • Highly stable potential when current is drawn from electrode
  • Simple installation
  • Accurate potential measurement
Sika® FerroGard® MN-15 RE
Product Data Sheet Show all documents

Usage

  • A reference electrode for monitoring cathodic protection systems.
  • Works with Sika® FerroGard® Duo and Sika® FerroGard® Patch and Sika® FerroGard® Patch CC.

Advantages

  • Chloride free
  • Exceptional polarisation characteristics
  • Compact construction
  • Supplied electrode potentials ±20mVt
  • Long life (>50 years)
  • No release of aggressive salts
  • Reliable long term performance
  • Highly stable potential when current is drawn from electrode
  • Simple installation
  • Accurate potential measurement

Packaging

10 reference anodes per box

Product Details

Product Information

Chemical Base

Manganese dioxide

Shelf Life

12 months from date of production

Storage Conditions

Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Length

70 mm

Diameter

16 mm

Application

Application Information

Ambient Air Temperature

+5 °C min

Substrate Temperature

+5 °C min
Application steps

APPLICATION

Reference should also be made to the Method Statement.

A suitable location for the electrode must be identified, which avoids contact with any steel in the structure. (EN 12696:2000 offers guidance on the positioning of reference electrodes used in the monitoring of cathodic protection systems).

Prior to installation, the Sika® FerroGard® MN-15 RE electrode must be soaked in water for a minimum of 2 hours and a maximum of 24 hours.

Install into a 130 L x 30 ø mm pre-drilled hole. The hole should be soaked with water prior to insertion of an embedding mortar. The Sika® FerroGard® MN-15 RE electrode should then be pushed into the embedding mortar to ensure complete encapsulation of the anode and elimination of air voids. A minimum cover of 20 mm should be achieved.

The embedding mortar should be allowed to harden as detailed in the manufacturer’s instructions, but generally at least 72 hours before operation. Correct installation should be confirmed using a variable impedance voltmeter. This will confirm electrolytic contact and the absence of cable breaks

Documents