EmStat4R
Rugged wireless potentiostat
- Portable: wireless in a rugged housing
- Available with connection module for sensor cable or SPE
- Potential range ±3 V
- Max. current ±30 mA
- Optional impedance analyzer: 10 μHz up to 200 kHz
You'll usually get an answer to your quotation request within one business day.
Description
The EmStat4R delivers desktop performance in a rugged enclosure. The EmStat4R is a portable Battery or USB-powered Potentiostat, Galvanostat, and optional a Frequency Response Analyzer (FRA) for Electrochemical Impedance Spectroscopy (EIS). The EmStat4R is great for applications that require low currents, from 30 mA down to picoamps, such as sensor applications. The EmStat4R is controlled with PSTrace for Windows, the Android app PStouch, or you can write your own MethodSCRIPT and control it from any platform or operating system.
Two versions
The EmStat4R is available with a cell cable or SPE connection module. Both versions can be configured with optional EIS/FRA with a maximum frequency of 200 kHz. See specifications for more information.
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EmStat4R SNS |
EmStat4R SPE |
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|---|---|---|---|
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| Connection module | Cell cable | Connection module | Screen-printed-electrode |
| Cell cable included | Yes | Cell cable included | No |
| Electrode connections | WE, RE, CE and ground | Electrode connections | RE, WE, CE |
| Connectors | 2 mm banana | Sensor pitch | 2.54 mm |
| Maximum sensor width | 11 mm | ||
| Allowed sensor thickness | Between 0.1 mm and 0.8 mm | ||
Always a backup
Always a backup
The EmStat4R is equipped with 500 MB internal storage memory for storing your measurements as a backup. All internally stored measurements can be browsed and transferred back to the PC easily using the PSTrace software for Windows. Your data is always with your instrument wherever you take it.Standard included
A standard EmStat4R includes a rugged carrying case with:
- EmStat4R
- Rugged case
- USB-C cable
- Cell cable: high quality, double-shielded cable with 2 mm banana connectors for Working, Counter, Reference electrode and Ground
- 4 crocodile clips
- Dummy Cell
- PSTrace software for Windows (on USB drive)
- Manual (hardcopy)
- Quick Start document
- Calibration report
- Three year warranty
Specifications
| General | |
|---|---|
dc-potential range
The maximum potential difference, that can be applied between WE and RE.
|
±3 V |
compliance voltage
The compliance voltage is the maximum voltage that can be applied between the working and counter electrode. Another name could be the maximum cell potential. Continue reading
|
±5 V |
| maximum current | ±30 mA |
| max. data acquisition rate | 1M samples /s |
| Potentiostat | |
|---|---|
| applied potential resolution | 100 µV |
applied potential accuracy
The applied potential accuracy describes how close to the real values your applied potential is.
|
≤ 0.2% ±1 mV offset |
current ranges
A potentiostat measures current. For optimal precision, the range between which currents are measured is split into multiple current ranges. A current range defines the maximum current a potentiostat can measure in a certain range. This means it will also determine the resolution, because the number of bits or rather states is fixed, while the current range is variable.
|
1 nA to 10 mA 8 ranges |
measured current resolution
The lowest observable difference between two values that a measurement device can differentiate between.
|
0.009% of CR (92 fA on 1 nA range) |
| measured current accuracy
The current accuracy describes how close to the real values your measured current is.
|
< 0.2% of current ±20 pA ±0.2% of range |
| bandwidth settings |
320 Hz, 3.2 kHz, 30 kHz or 570 kHz |
| Galvanostat | |
|---|---|
current ranges
A potentiostat measures current. For optimal precision, the range between which currents are measured is split into multiple current ranges. A current range defines the maximum current a potentiostat can measure in a certain range. This means it will also determine the resolution, because the number of bits or rather states is fixed, while the current range is variable.
|
10 nA, 1 uA, 100 uA, 10 mA 4 ranges |
| applied dc-current | ±3 * CR (current range) |
| applied dc-current resolution | 0.01% of CR |
| applied dc- current accuracy
The current accuracy describes how close to the real values your measured current is.
|
<0.4% of current ±20 pA ±0.2% of range |
| potential ranges |
50 mV, 100 mV, 200 mV, 500 mV, 1 V |
| measured dc-potential resolution |
96 µV at ±3 V (1 V range) |
| measured dc-potential accuracy | ≤ 0.2% ±1 mV offset |
| bandwidth settings | 320 Hz, 3.2 kHz, 30 kHz or 570 kHz |
| FRA / EIS | |
|---|---|
| frequency range | 10 µHz to 200 kHz |
| ac-amplitude range |
1 mV to 900 mV rms, or 2.5 V p-p |
| GEIS | |
|---|---|
| frequency range | 10 µHz to 100 kHz |
| ac-amplitude range |
0.9 * CR (Arms) |
| Electrometer | |
|---|---|
electrometer amplifier input
The amplifier input resistance of the amplifier in the electrometer determines the load that the amplifier places on the source of the signal being fed into it. Ideally the resistance is infinite, and the load to be zero to not to influence your measurement.
|
> 1 TΩ // 10 pF |
| bandwidth |
10 kHz default or 500 kHz for EIS and fast CA/CP |
| Other | |
|---|---|
| electrode connections |
Two versions:
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| housing |
aluminum body only: |
| weight |
± 310 g |
| communication |
USB-C or wireless |
| Battery life |
|
| internal storage space |
500 MB, equivalent to > 15M datapoints |
| EmStat4R EIS Accuracy Contour Plot |
|---|
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Note The accuracy contour plots were determined with an ac-amplitude of ≤10 mV rms for all limits, except for the high impedance limit, which was determined using an ac-amplitude of 250 mV. The standard cables were used. Please note that the true limits of an impedance measurement are influenced by all components in the system, e.g. connections, the environment, and the cell. |
Software
PSTrace
PSTrace is designed to be productive immediately after installation, without going through a long learning period. It has three modes; the Scientific mode which allows you to run all the techniques our instruments have to offer, and two dedicated modes for Corrosion analysis and the Analytical Mode. PSTrace is suitable for all levels of user experience.
Features include:
- Direct validation of method parameters
- Automated peak search
- Equivalent Circuit Fitting
- Scripting for running an automated sequence of measurements
- Open data in Origin and Excel with one click of a button
- Load data from the instrument’s internal storage
- and many more…
PStouch
PStouch is an app for Android devices compatible with all PalmSens, EmStat and Sensit potentiostats. The app connects to your potentiostat via USB (depending on the Android device) or via Bluetooth.
PStouch features include:
- Setting up and running measurements
- All files compatible with PSTrace
- Analysing and manipulating peaks
- Sharing data directly via e-mail, Dropbox, or any other file sharing service
Software Development Kits
PalmSens provides several Software Development Kits (SDKs) to help developers create custom software to control their potentiostat. Each SDK comes with documentation and examples that shows how to use the libraries.
SDKs are available for:
- .NET (WinForms, WPF and Xamarin for Android)
- Python
- LabVIEW
- Matlab
MethodSCRIPT™ Communications Protocol
The EmStat4-series instruments work with MethodSCRIPT™, giving you full control over your potentiostat. The simple script language is parsed on-board, which means no DLLs or other type of code libraries are required. MethodSCRIPT™ allows for running all supported electrochemical techniques, making it easy to combine different measurements and other tasks.
MethodSCRIPT can be generated, edited, and executed in PSTrace.
MethodSCRIPT features includes:
- (Nested) loops and conditional logic support
- User code during a measurement iteration
- Exact timing control
- Simple math operations on variables (add, sub, mul, div)
- Data smoothing and peak detection
- Digital I/O, for example for waiting for an external trigger
- Logging results to internal storage or external SD card
- Reading auxiliary values like pH or temperature
- and many more…
Downloads
Documentation (6)
| Name | Last updated | |
|---|---|---|
| EmStat4R Brochure The EmStat4R brochure contains an overview of all the supported techniques, specifications, kit contents, the software PSTrace, the Android app PSTouch and MethodSCRIPT | 08-01-25 | |
| MethodSCRIPT v1.5 The MethodSCRIPT scripting language is designed to improve the flexibility of the PalmSens potentiostat and galvanostat devices for OEM users. It allows users to start measurements with arguments that are similar to the arguments in PSTrace. PalmSens provides libraries and examples for handling low level communication and generating scripts for MethodSCRIPT devices such as the EmStat Pico and EmStat4. | 25-03-24 | |
| EmStat4M Communication Protocol V1.3 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS. | 25-03-24 | |
| EmStat4R Operator’s Manual Learn how to connect the instrument, understand the specifications, use the features and troubleshoot if needed. | 13-03-24 | |
| EmStat4M Communication Protocol V1.2 Describes how to communicate with the EmStat4M directly and how to send MethodSCRIPTS. | 01-02-23 | |
| MethodSCRIPT v1.4 The MethodSCRIPT scripting language is designed to improve the flexibility of the PalmSens potentiostat and galvanostat devices for OEM users. It allows users to start measurements with arguments that are similar to the arguments in PSTrace. PalmSens provides libraries and examples for handling low level communication and generating scripts for MethodSCRIPT devices such as the EmStat Pico and EmStat4. | 01-02-23 |
Software (1)
| Name | 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. | 08-07-24 |
Application Note (1)
| Name | Last updated | |
|---|---|---|
| How to use Drop Detection with the SPE Connection Module Describes the functionality and working principle of Drop Detection with the SPE Connection Module for EmStat Go and EmStat4R. | 03-10-22 |