PAT-Dummy-Cell I

Basic cell for performing a functional test of your PAT-Tester

Product description
The PAT-Dummy-Cell I is used to perform a quick functional test of your PAT-Tester right out of the box, or in case the tester does not work as expected with your electrochemical test cell. The PAT-Dummy-Cell-I consists of simple RC circuits:

The dummy cell can be considered a simplistic equivalent circuit of the three electrodes of an electrochemical cell. The R2|C1 parallel connection represents the electrode/electrolyte interface of electrode 1. R3|C2 is the same for electrode 2. The bulk (ohmic) resistance contributions between 1 and 2 are represented by R1 and R4. If the current passes between 1 and 2, the voltage drop across R5 is zero. Then the electrode R can be considered the voltage tap between electrodes 1 and 2. In contrast, if the current goes through electrode R, then voltage also drops across R5.

Test cases

2. Impedance (GEIS) test

The RC elements of the dummy circuit are best characterized by impedance measurements. For the results shown below as Bode plots, we applied a sinusoidal alternating current with an amplitude of 1 mA, with frequencies between 100 kHz and 1 Hz. First, the alternating current was applied between 1 and 2, then between 1 and R and finally between 2 and R.

2.1 Current flows between 1 and 2 Script used: Dummy-I-GEIS-i12.elc		2.2 Current flows between 1 and R Script used: Dummy-I-GEIS-i1R.elc
2.3 Current flows between 2 and R Script used: Dummy-I-GEIS-i2R.elc