Parameters Determining Current - Mettler Toledo InPro 6950 Serie Bedienungsanleitung

Principle of the design of the InPro 6950
Process Medium
10.3 Parameters determining current
l = k
I = Electrode current
k = Constant
D = Coefficient of diffusion of O
a = Solubility of O
A = Cathode surface
pO = Oxygen partial pressure in the solution
2
X = Thickness of gas-permeable membrane
U
(Potentiostat)
D a
U
A
O O
2 2
O
2
pO
A
2
x
in the membrane
2
in the membrane material
2
(Potentiostat)
Polarization
Voltage
Reference
Electrolyte
Insulator
Cathode (Pt)
Anode (Pt)
Guard
Membrane