MUX8-R2 Multiplexer for 8 cells

To complete your setup, we can offer you cables for connecting your electrodes or combining multiple MUX8 devices to increase the number of channels (daisy chain).

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Product Description

This multiplexer allows the usage of a single PalmSens or EmStat Blue with up to 8 electrochemical cells, by switching between the different cells. A great way to raise efficiency.

A single PalmSens or 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. There are two versions of the multiplexer available.

MUX8-R2 multiplexer: enables to work with up to eight 2- or 3- electrode systems.

MUX16 multiplexer: enables to work with up to sixteen 2- electrode systems. The 16 working electrodes can have a shared counter and reference electrode, or each working electrode is matched with its own combined reference/counter electrode. If only the working electrodes are switching, one reference and one counter electrode shared by all working electrodes is a possible configuration.

The MUX8-R2 is the successor of our popular MUX8. The design has been revised and improved leading to several new features.

– improved performance for OCP measurement
– reduced charge injection by switching
– all hardware settings are controlled by the software making it unnecessary to flick a physical switch
– allows to be used with the new 4-in-1 cell cables (easier and better connections), i.e. MUX8 Connection Terminal is not needed
– allows to connect auxiliary input (like temperature sensor)
– LEDs to show which channel is selected
– daisy chaining multiple MUX8-R2 boards (expansion up to 128 channels)

Connection

Standard packaging includes two double shielded D-Sub cables ending in 2 mm banana plugs and a USB cable. As alternatives we can provide a PCB with screw terminals or a D-Sub cable ending in ferrules. Each of these cables can be connected to 4 channels, if all 8 channels are used, two cables are needed.

Documents

Specifications

 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

For connecting to PC or Android device
Channel 1-4

Connects to sensor cables 1-4

Channel 5-8 Connects to sensor cables 5-8