Copper/ Copper Sulphate Reference Electrodes

الکترودهای مرجع مس/ سولفات مس

Copper/ copper sulphate reference electrodes are produced in two portable and permanent. Portable type with probe is suitable for many applications, while permanent type is used on the tank bottoms, next to pipelines and in some cases as an important part of smart transformer rectifiers, etc.


The dimensions of the reference electrode may be suitably selected, but in order to avoid polarization during the tests, the surface area of the copper electrode in contact with the copper sulphate solution shall be large enough. The copper electrode shall be selected from high purity copper (99.9%) and cleaned to remove all traces of oxide and grease and immersed in saturated copper sulphate solution. It is necessary to maintain the saturated state of the solution by adding additional solid copper sulphate.

 

Schematic of portable copper/ copper sulphate reference electrode used in soil and its componentsSchematic of portable copper/ copper sulphate reference electrode used in soil and its components

 

Portable copper/ copper sulphate reference electrode manufactured by Borna Electronics Co.Portable copper/ copper sulphate reference electrode manufactured by Borna Electronics Co.

The electrically connected reference electrodes of the portable type are formed only by the porous layer at the bottom of the electrode and its moisture is maintained by the penetration of copper sulfate solution. The probe heads of these reference electrodes are somewhat fragile and are susceptible to mechanical impacts, so they shall be used with precision during handling and application. The electrical connection of the permanent type reference electrodes to the environment is made by the entire porous clay body and is maintained around the humidity by the presence of a backfill (usually containing 75% gypsum, 20% bentonite and 5% sodium sulfate) around it. The entire clay body of these reference electrodes is fragile and vulnerable and shall be protected from mechanical impacts during transport and installation.

Schematic of permanent copper/ copper sulphate reference electrode used in soil and its componentsSchematic of permanent copper/ copper sulphate reference electrode used in soil and its components

 

Permanent copper/ copper sulphate reference electrode manufactured by Borna Electronics Co.Permanent copper/ copper sulphate reference electrode manufactured by Borna Electronics Co.

Installing copper /copper sulphate reference electrodes in soil and on tank bottomInstalling copper /copper sulphate reference electrodes in soil and on tank bottom 

Installing copper /copper sulphate reference electrodes in soil and on tank bottom