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WTW ORP measurements ( Alat Ukur tingkat ORP dalam cairan)

Reduction and oxidation are two central chemical terms that describe the ability of ions to accept ( = reduction) or donate electron ( = oxidation) . In aqueous solutions, the ORP ( oxidation-Reduction Potential) voltage can be measured using a standard hydrogen electrode as reference. A negative potential value means that the solution has a reducing action when compared with this electrode. A positive value means that the solution has an oxidizing effect.

ORP measurements monitor chemical reactions such as checking the denitrification of wastewater and disincfectant effect of detergents or the strength of plating bath. Measurement of ORP voltage is carried out with ORP combination electrodes. Similar to pH electrodes, these consist of a measuring electrode and a reference electrode. A metal electrode ( usually made of precious metal such as platinum) is used in ORP combination electrodes in place of glass membrane for carrying out the measuring function. The tendency for the dissolved ions to accept or donate electrons determines the potential of the metal and thus is use today contain a silver/ silver chloride reference electrode, i.e. the indicated potential refers to this potential. Conversion between the standard hydrogen electrode system ( UH) and that of the silver/ silver chloride reference electrode ( UB) is easily possible.

Technical Data and Order Information

Order No. 103 648
Working temperature range 0 ...100 ° C
Reference electrolyte KCl 3 mol/ l, Ag+ -free
Sensor platinum
Sensor shape round, 4 mm dia.
Diaphragm ceramic
Shaft material glass
Shaft length / Shaft diameter 120 mm ± 2 12 mm ± 0, 5
Temperature sensor -
Connection plug head
Electrode cable AS/ DIN, AS/ DIN 3, or AS/ BNC
Electrode plug DIN plug or BNC