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Emstat Pico Module

Proven, tested and calibrated dual-channel potentiostat

  • Enables rapid prototyping, no programming skills needed
  • Easy to reproduce measurements using MethodSCRIPT
  • Support from Analog Devices & PalmSens
  • Used by 100+ OEM customers
All specifications
PalmSens usually responds to your quotation request within one business day.

Description

The EmStat Pico is a proven stand-alone potentiostat module which enables you to perform electrochemical measurements using your own electrochemical sensor without programming skills. You can integrate this small dual-channel module on your PCB without any potentiostat knowledge thanks to the joint development by Analog Devices Inc and PalmSens. Our tested and calibrated modules are used by over 100+ OEM customers in over 30 countries. Our network, experience and support will help you succeed and save development time with the smallest potentiostat module on the market.

  • Dimensions: 18 x 30 x 2.6 mm
  • Dual channel (2x WE, 2x RE, 2x CE)
  • EIS frequency range: 0.016 Hz to 200 kHz
  • Full dc-potential range: -1.7 V to +2 V
  • Current ranges: 100 nA to 5 mA
  • Four different versions available, each with different electrochemical techniques: A, B, C and ALL.

The EmStat Pico module and EmStat Pico Development Kit are also available on Arrow and Digi-Key.

 

Supported techniques

There are four different versions available, each with different electrochemical techniques: A, B, C and ALL. The default version is ALL, from 50+ units the A, B and C versions are available.

Voltammetric techniques

  A B C ALL
Linear Sweep Voltammetry LSV
Cyclic Voltammetry CV
Square Wave Voltammetry SWV    
Differential Pulse Voltammetry DPV    
Normal Pulse Voltammetry NPV    

Techniques as a function of time

         
Chronoamperometry CA
Pulsed Amperometric Detection PAD
Open Circuit Potentiometry OCP
MultiStep Amperometry MA
Electrochemical Impedance Spectroscopy EIS    

Specifications

The module works at three different modes;
Low Speed mode: for scan rates up to 1 V/s or a bandwidth of 100 Hz.
High Speed mode: for high scan rates and frequencies.
Max Range mode: a combination of the Low and High Speed modes for optimal dynamic dc-potential range.

  Low Speed mode High Speed mode Max Range mode
General
Full dc-potential range -1.2 to +2 V -1.7 to +2 V -1.7 to +2 V
Dynamic dc-potential range [1] 2.2 V 1.2 V 2.6 V
Compliance voltage -2.0 to +2.3 V [2]
Maximum current ± 3 mA
Max. acquisition rate
(datapoints/s)
100 1000 100
Supports FRA/EIS NO YES NO
Potentiostat (controlled potential mode)
Channels 2 (2x WE, 2x RE and 2x CE)
Applied dc-potential resolution 537 µV 395 µV 932 µV
Applied potential accuracy < 0.2% < 0.5% < 0.5%
Current ranges 100 nA, 2 uA,
4 uA, 8 uA,
16 uA, 32 uA,
63 uA, 125 uA,
250 uA, 500 uA,
1 mA, 5 mA
100 nA, 1 uA,
6 uA, 13 uA,
25 uA, 50 uA,
100 uA,
200 uA, 1 mA,
5 mA
100 nA, 1 uA,
6 uA, 13 uA,
25 uA, 50 uA,
100 uA,
200 uA, 1 mA,
5 mA
Current accuracy < 0.5 % of the selected current range
< 2% for 100 nA current range
< 1% of the selected current range
< 2% for 100 nA current range
< 2% for 5 mA current range
Measured current resolution 0.006% of selected current range
(5.5 pA on 100 nA range)
Measured potential resolution (for OCP) 56 uV
FRA / EIS (impedance measurements)
Frequency range 0.016 Hz to 200 kHz
Ac-amplitude range 1 mV to 0.25 V rms, or 0.708 V p-p
Bipotentiostat
Modes 1. WE2 at fixed potential (E offset vs RE1)
2. WE2 scanning (E offset vs WE1)
Max. potential WE2 ΔE(WE1) + ΔE(WE2) < 1.6 V  [3]
Electrometer
Electrometer amplifier input > 1 TΩ // 10 pF
Bandwidth  250 kHz
Communications and peripherals
Module communication UART
Communication with external peripherals SPI and I2C
Analog I/O 3 analog input pins
Digital I/O 7 general-purpose I/O pins
1 wake-up pin
On-board temperature sensor ±2 °C or ±0.25 °C [4]
Other
Storage 4000 datapoints on-board (supports optional external SD card for mass storage)
Mounting Surface mounted with castellated pads
Through hole pins (2.54 mm pitch)
Dimensions 30.5 mm X 18 mm X 2.6 mm
Operation temperature range -40°C to +85°C

[1]  The dynamic range is the range that can be covered during a single scan within the full potential range. For example; a linear scan can start at -1.5 V and end at 1.1 V or vice versa, covering 2.6 V dynamic range.
[2] The compliance voltage is the maximum potential between Working and Counter electrode and depends on the selected mode.
[3] If your main WE1 is scanning from -0.5V to +0.5V, the WE2 can only have a maximum offset of 0.6V.
[4] The high accurate on-board temperature sensor is standard available on modules that come with the EmStat Pico Development Kit. For separate EmStat Pico modules the temperature sensor is optional.

Dual-channel and Bipotentiostat functionality

The second channel of the EmStat Pico can be used for running sequential measurements on two different cells each with their own Reference, Counter and Working electrodes.
The second channel can also be used in Bipotentiostat mode, functioning as second Working Electrode versus the Reference and Counter electrode of channel 1. Both channels are recorded simultaneously in the Bipotentiostat mode.

The second Working Electrode (WE2) can either be set at a potential offset with respect to WE1 or at a fixed potential with respect to RE1.

The Bipotentiostat mode is supported in Low Speed mode (see table above) for all techniques, excluding EIS and OCP.

Software

Develop software for PC, smartphone or microcontroller

Whether you want to write a simple or advanced Windows application, develop an Android or iPhone app or integrate the EmStat Pico in your own hardware, you can do it with our Software Development Tools and code examples.

The EmStat Pico Development Kit can also be controlled directly with our PSTrace software for Windows and PStouch for Android.

 

Overview of software development tools

Software Development Kits for .NET

The PalmSens Software Development Kits (SDKs) for .NET can be used with any of our instruments or OEM potentiostat modules to develop your own software. The SDK’s come with a set of examples that shows how to use the libraries.

PalmSens SDKs with examples are available for the following .NET Frameworks:

  • WinForms
  • WPF
  • Xamarin (for Android)
  • UWP

SDKs for .NET

MethodSCRIPT™ communications protocol

The EmStat Pico potentiostat module works with the new MethodSCRIPT scripting language. This language allows developers to program a human-readable script directly into the Pico module. The simple script language allows for running electrochemical techniques supported by EmStat Pico and makes it easy to combine different measurements and other tasks.
More script features include:
▪ Use of variables
▪ (Nested) loops
▪ Logging results to an SD card
▪ Digital I/O for example for waiting for an external trigger
▪ Reading auxiliary values like pH or temperature
▪ Going to sleep or hibernate mode

A MethodSCRIPT for your optimal measurement parameters can be generated in PSTrace software for Windows.

MethodSCRIPT

Downloads

Name Type Last updated
App Note – pH Measurement using EmStat Pico 07-09-20
EmStat Pico footprint for Altium EmStat Pico footprint for use with Altium PCB Designer14-05-20
MethodSCRIPT v1.2 protocol description MethodSCRIPT v1.2 protocol description28-04-20
MethodSCRIPT v1.1 protocol description MethodSCRIPT v1.1 protocol description17-04-20
EmStat Pico example test report EmStat Pico example test report08-04-20
EmStat Pico firmware updating Shows how to update the firmware on an EmStat Pico module08-04-20
EmStat Pico communication protocol v1.2 Describes the EmStat Pico communications protocol which is based on MethodSCRIPT08-04-20
MethodSCRIPT code examples MethodSCRIPT code examples can now be found on Github
- MethodSCRIPTExample_C
- MethodSCRIPTExample_C_Linux
- MethodSCRIPTExample_C#
- MethodSCRIPTExample_Arduino
- MethodSCRIPTExample_Python
- MethodSCRIPTExample_iOS
- MethodSCRIPTExample_Android
Every code example comes with a "Getting Started" document.
08-04-20
EmStat Pico datasheet Contains the information you need for integration of the EmStat Pico in your electronics design.08-04-20
EmStat Pico Description Description of the EmStat Pico module and software tools08-04-20
EmStat Pico 3D model 3D STEP file of the EmStat Pico module08-02-20
EmStat Pico communication protocol v1.1 Describes the EmStat Pico communications protocol which is based on MethodSCRIPT28-08-19

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