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MUX8-R2 Multiplexer
Multiplexer for 8 up to 128 cells
- Automatically switch between electrochemical cells
- Easy stacking with magnetic feed and top
- 4 different electrode or sensor configurations
- Daisy chain multiplexers, up to 128 channels!
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Description
The PalmSens series and EmStat Blue can be used to work with multiple working electrodes or a sensor array by means of a multiplexer. The multiplexer switches between the working electrodes in the range of milliseconds.
- each MUX8-R2 multiplexer enables to work with up to eight 2- or 3- electrode systems.
- daisy chaining multiple MUX8-R2 boards (expansion up to 128 channels)
- all hardware settings are controlled by the software making it unnecessary to flick a physical switch
- LEDs to show which channel is selected
- allows to connect auxiliary input (like temperature sensor)
Connection
The most selected connection option uses two double shielded D-Sub cables ending in 2 mm banana plugs. As alternatives we can provide a PCB with screw terminals, D-Sub cable ending in ferrules or Screen Printed Electrode Adapter. Each of these cables can be connected to 4 channels, if all 8 channels are used, two cables are needed.
Cable connections
| System | |
|---|---|
| number of channels | 8 (up to 128 when daisy chained) |
| multiplexer | switches 8 x (WE, S, RE and CE) |
| on resistance for WE | 1.5 ohm typical |
| charge injection on WE | 20 pC typical |
| leakage current | < 20 pA (5 pA typical) at 25 ºC |
| switching time | 2 ms |
| compliance voltage | ± 10 V |
| Other | |
| housing | aluminium: 138 mm x 121 mm x 37 mm |
| weight | +/- 500 g |
| temperature range | 0 ºC to + 50 ºC |
| power supply | USB |
The MUX8-R2 has the following connections:
| Connector | Function |
|---|---|
| Input | Y-cable connects to both potentiostat sensor connector and (digital) AUX |
| AUX | Can be used to measure auxiliary input like temperature or pH, and to switch external hardware using two digital control lines that can be set in PSTrace |
| Link | Connects to Input of next multiplexer, for daisy-chaining multiple multiplexers |
| USB-C | Input for extra power when ≥3 multiplexers are daisy-chained |
| Channel 1-4 | Connects to sensor cables 1-4 |
| Channel 5-8 | Connects to sensor cables 5-8 |
Downloads
| Name | Type | Last updated | |
|---|---|---|---|
| OCP with MUX8-R2 The multiplexer MUX8-R2 offers the possibility to record reliable Open Circuit Potential (OCP) measurements in the Alternating mode, which allows to monitor the OCP of multiple samples / working electrodes over time with a single potentiostat. This is a significant improvement compared to its predecessors MUX8 and MUX16. In this application note it is demonstrated how to setup and perform an OCP measurement with the MUX8-R2 in the Alternating mode. | Application Note | 04-05-21 | |
| EmStatMUX8-R2 Description Description of the EmStatMUX8-R2 instrument | Documentation | 16-11-20 | |
| MUX8-R2 Description Description of the MUX8-R2 multiplexer | Documentation | 16-11-20 | |
| Multichannel, polypotentiostat or multiplexer This will help you to choose the ideal multi-channel instrument for your application. | Application Note | 08-04-20 |