8通道/16通道偶合器

MUX8 即8通道偶合器, MUX16既16通道偶合器

当使用MUX8与PalmSens3/3+电化学工作站配套使用时,即升级为8通道电化学分析仪.

可以同时接:

-8个工作电极、8个参比电极、8个辅助电极

-8个工作电极、8个参比与辅助复合电极

-8个工作电极、1个参比、1个复合电极

-8个工作电极、1个参比与辅助复合电极

  当使用MUX16与PalmSens3/3+电化学工作站配套使用时,即升级为16通道电化学分析仪.

可以同时接:

-16个工作电极、16个参比电极、16个辅助电极

-16个工作电极、16个参比与辅助复合电极

-16个工作电极、1个参比、1个复合电极

  -16个工作电极、1个参比与辅助复合电极

MUX8 and MUX16

The MUX8 and MUX16 are multiplexers for use with PalmSens

MUX8:

The MUX8 multiplexer allows users to connect up to eight electrochemical cells or sensors to the PalmSens potentiostat. This multiplexer can be used with different electrode or sensor configurations:

1      Eight separate cell or sensors each with a working, reference and counter electrode,

2      Eight separate cell or sensors each with a working and combined reference and counter electrode,

3      Cell or sensor array with eight working electrodes sharing one reference and one counter electrode,

4      Cell or sensor array with eight working electrodes sharing one combined reference/counter electrode.

In all configurations the cells can be multiplexed, leaving the non-selected cells or sensors at open circuit.

Configurations 2, 3 and 4 also have the possibility to apply the specified potential to all cells or sensors continuously.

MUX16:

The MUX16 multiplexer allows users to connect up to sixteen working electrodes to the PalmSens potentiostat. This multiplexer can be used with different electrode or sensor configurations:

1      Sixteen separate cells or sensors each with a working and combined reference and counter electrode,

2      Cell or sensor array with sixteen working electrodes sharing one reference and one counter electrode,

3      Cell or sensor array with sixteen working electrodes all sharing one combined reference/counter electrode.

In all configurations the electrodes can be multiplexed, leaving the non-selected electrodes at open circuit or having the potential applied to all working electrodes continuously.

The hardware configuration of the MUX can be changed by using the small switches found at the bottom of the MUX.

PSTrace main features

Multiplexer support

PSTrace supports use of the multiplexers (MUX8 and MUX16) for PalmSens. Voltammetric scans can be measured on all 16 or 8 channels consecutively and stored in a single data file. Amperometric detection can be done simultaneously on all channels, with a minimum interval time of 0.25 s (MUX8) or 0.5 s (MUX16).

PSTrace in Scientific mode (default)

MUX8 and MUX16

Instrumental specifications

MUX8 multiplexer:

MUX16 multiplexer:

- number of channels                       2 - 16

- multiplexer                                   WE only, CE and RE are not switched

- on resistance                                2 ohm typical

- charge injection                            20 pC typical (see note)

- leakage current                             10 pA typical at 25 oC (see note)

- cable                                           shielded DSub cable for 16 x WE, 1 x CE and 1 x RE

or optionally a connection block with screw terminals:

General:

- interfacing                                    d-15 cable to PalmSens and

standard PalmSens electrode cable

- power                                          5 V from PalmSens

- dimensions                                  8.9 cm x 3.5 cm x 8.5 cm

- weight                                         0.3 kg

Note: for very low current applications, the PCB can be populated with components with lower leakage (10 pA typical) and lower charge injection (1 pC) properties. These components can be used for measurements with currents always below approx. 100 uA.

Optional Connection Terminal

The optional Connection Terminal is an easy to handle PCB to manage your own cable connections. The connection PCB comes in a grounded metal housing.

The Connection Terminal can be connected to the MUX via a D-Sub cable or the two devices can be directly joined together via their D-Sub connectors.

The Connection Terminal is also available equipped with 8 sensor cables for use with the MUX8: