Product Description

The EmStat module contains the following features:

  • 9 embedded common electrochemical techniques (see below)
  • options for manual cell control (potentials, changing current range and timing)
  • USB and serial communication or USB as Virtual COM port
  • automatic current ranging and peripheral control (stirrer or valve)
  • multiplexer control

The following techniques are supported by the EmStat module.

Voltammetric techniques:

  • Linear sweep voltammetry (LSV)
  • Differential pulse voltammetry (DPV)
  • Square wave voltammetry (SWV)
  • Normal pulse voltammetry (NPV)
  • Cyclic voltammetry (CV)

These methods can all be used in their stripping modes which are applied for (ultra-) trace analysis.

Techniques as a function of time:

  • Chronoamperometry (CA)
  • Pulsed amperometric detection (PAD)
  • Multiple pulse amperometry (MPAD)
  • Open circuit potentiometry (OCP)

Specifications

EmStat version: 3 3+
dc-potential range ± 3.000 V ± 4.000 V
compliance voltage ± 5 V ± 8 V
dc-potential resolution 0.1 mV 0.125 mV
dc-potential accuracy 0.2 % 0.3 %
current ranges 1 nA to 10 mA (8 ranges) 1 nA to 100 mA (9 ranges)
maximum current ± 20 mA typical
and ± 15 mA minimum
± 100 mA typical

The current is measured using a zero resistance ammeter (ZRA).

current resolution 0.1% of current range, 1 pA at lowest current range
current accuracy (deviation) ≤ 1 %of current range at 1 nA
≤ 0.5 % at 10 nA
≤ 0.2 % at 100 nA to 100 uA
≤ 0.5 % at 1 mA, 10 mA and 100 mA
all with max. 0.2 % offset error
electrometer amplifier input       > 100 Gohm // 4 pF
rise time     approx. 100 μs
power ES3: 5V, max. 130 mA
ES3+: 5V, max. 500 mA
external I/O options analog: 1 input and 1 output
both 0 V- 4.096 V
digital: 4 in/output lines
max. rating: -0.3 V to 5.3 V
PCB dimensions ES3: 51.5 x 34 mm
ES3+: 55 x 41 mm

Communication

The EmStat module supports communication via:

  • USB
  • serial TTL (Rx/Tx for UART)
  • RS232 (by means of additional TTL <> RS232 converter)
  • virtual COM port (the EmStat’s USB port is recognized as generic virtual COM port)
  • an optional Bluetooth module for use with the Serial Port Profile (SPP) or a Wifi module can be connected to the +5V, GND and Rx/Tx lines

All communication is in plain ASCII. A communications protocol for direct serial communication (without requirement of additional software libraries) is available.

Running measurements

The EmStat can be pre-loaded with a set of measurement parameters to carry out a specific measurement technique autonomously.

Or EmStat can be controlled directly with short commands to control the cell and get readings.

Development board

The EmStat potentiostat modules can be used with the EmStat development board to speed up your development process.

More information here.

 

EmStat module

Please specify below which EmStat module (3 or 3+) you would like to have quoted.
For first time customers, we recommend to order the module with the Development  Kit (incl. the Development Board) or the Starter Kit.

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PalmSens always responds to your quotation request within one business day.

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