MUX8 Multiplexer
PalmSens can be used with sensorarrays by means of a multiplexer. The MUX8 multiplexer is the standard multiplexer with eight channels. PalmSens can be used with two MUX8 multiplexers in parallel, thus providing 16 channels.
Configurations
The multiplexer MUX8 is used with PalmSens if multiple electrochemical cells or a sensor array are applied. The number of cells or sensors which can be connected to this device is eight. It can be applied with different configurations of electrochemical cells or sensor arrays:
- Cells or sensor arrays with (up to) eight working, reference and counter electrodes
- Cells or sensor arrays with eight working and eight combined reference/counter electrodes
- Cells or sensor arrays with eight working electrodes sharing a reference and a counter electrode
- Cells or sensor arrays with eight working electrodes sharing a combined reference/counter electrode
In all configurations the cells or sensors can be multiplexed, leaving the not-selected sensors at open circuit.
Configurations 2, 3 and 4 also have the possibility to apply the specified potential to all sensors continuously.
The configuration is set by means of some jumpers on the board of the instrument. The userguide explains the jumper settings.
The program PSTrace allows to use the PalmSens with multiplexer for amperometric detection but also for cyclic and linear sweep voltammetry as well as differential pulse and square wave voltammetry.