Sensit BT

Handheld and wireless dual-channel potentiostat

  • Capable of EIS up to 200 kHz
  • Built around the EmStat Pico module
  • Potential range -1.7 to +2 V
  • Current ranges 100 nA – 5 mA (max ±3 mA)
All specifications
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Description

The Sensit BT is ideal for electrochemical sensor applicatons. The Sensit BT connects via Bluetooth to your smartphone or tablet and controlled via the Android app PStouch. You can use the USB-C port to charge the Sensit BT or connect to a classic USB port on your PC and control the Sensit BT via our PC software PSTrace

The Sensit BT supports most common electrochemical techniques, including Cyclic Voltammetry, Square Wave Voltammetry and Impedance Spectroscopy (FRA/EIS). 

Two versions:

Sensit BT.SPE

Sensit BT.SNS

Sensor pitch 2.54 mm Cable length 40 cm
Electrode connections RE, WE, CE Connectors 2 mm banana
Allowed sensor thickness Between 0.1 mm and 0.8 mm Electrode connections RE, WE, WE2, CE
Maximum sensor width 11 mm  

Dual-channel and Bipotentiostat

The Sensit BT.SPE can be used for running sequential measurements on two different Screen-Printed Electrodes (SPE’s) 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 Sensit BT.SNS has a lead connected to the WE of channel 2 and can be used out-of-the-box for BiPotentiostat measurements.

 

Techniques

Voltammetric techniques

  • Linear Sweep Voltammetry (LSV)
  • Cyclic Voltammetry (CV)

Pulsed techniques

  • Differential Pulse Voltammetry (DPV)
  • Square Wave Voltammetry (SWV)
  • Normal Pulse Voltammetry (NPV)

Amperometric techniques

  • Chronoamperometry (CA)
  • Chronocoulometry (CC)
  • MultiStep Amperometry (MA)
  • Pulsed Amperometric Detection (PAD)

Galvanostatic techniques

  • Open Circuit Potentiometry (OCP)

Electrochemical Impedance spectroscopy (EIS)

  • Potential scan
  • Fixed potential
  • Time scan

Specifications

The Sensit BT 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 BT.SPE: 2 channels both with WE, RE and CE
BT.SNS: WE, RE, CE and WE2
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 < 1% of the selected current range
Measured current resolution 0.006% of selected current range (5.5 pA on 100 nA range)
Measured potential resolution 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

[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.

 

Electrometer
Electrometer amplifier input > 1 TΩ // 10 pF
Bandwidth  250 kHz

 

Other
Power USB / battery
Communication USB (type C) and Bluetooth (Classic and BLE)
Dimensions 75 x 55 x 23 mm (excl. cable)
Weight 75 g
Battery life 12 hours at max. power consumption
Full charge in < 3 hours
Auxiliary port No
Storage memory 500 MB for storing up to 16 million datapoints

 

Software

For Windows and Android

PSTrace for Windows

PSTrace for Windows provides support for all techniques and device functionalities. With a smooth simple interface, showing only the applicable controls, PSTrace is suitable for all levels of user experience. Functions include:

  • Direct feedback on method parameters
  • Equivalent Circuit Fitting
  • Open your data in Origin and Excel with one click of a button
  • Save all available curves, measurement data and methods to a single file

Download PSTrace on my.palmsens.com

PStouch app for Android

PStouch is compatible with the Sensit BT.

Get it on Google Play

Downloads

Name Type Last updated
Sensit BT description Description of the Sensit BT18-05-20
MethodSCRIPT v1.2 protocol description MethodSCRIPT v1.2 protocol description28-04-20
MethodSCRIPT v1.1 protocol description MethodSCRIPT v1.1 protocol description17-04-20
MethodSCRIPT code examples This ZIP file contains the following examples for MethodSCRIPT v1.2:
- 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

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