MUX8-R2 Multiplexer

Multiplexer for 8 up to 128 cells

  • Automatically switch between electrochemical cells
  • Easy stacking with magnetic feet 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 terminalsD-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
PSTrace – PC software for all single channel instruments PSTrace software is shipped as standard with all single channel and multiplexed instruments. The software provides support for all techniques and device functionalities. Software 17-03-22
MUX8-R2 Connector Card This connector card gives you an overview of the MUX8-R2 connector pin-outs. Application Note 14-03-22
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
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
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