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PalmSens  |  SKU: C-SEN-WB-ALL

Sensit Wearable Potentiostat for wearable biosensors

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Sensit Wearable Potentiostat for wearable biosensors

PalmSens

  • Accelerate the development of your wearable sensor
  • Works wireless and autonomous, battery powered
  • Measure up to two different analytes using two working electrodes
  • Use with PSTrace software for Windows
  • Smooth start with the development kit

Description

The Sensit Wearable reduces the time-to-market for new electrochemistry-based wearable sensors. Wearable, flexible electrochemical sensors, for instance integrated on the epidermis, can be used to measure non-invasively metabolites and electrolytes for various biomedical applications.


Possible applications

  • Continuous Glucose Monitoring
  • Sweat analysis for athletes
  • Molecular biomarkers

 

Techniques and software

The Sensit Wearable supports most common electrochemical techniques, including Cyclic Voltammetry, Square Wave Voltammetry and Impedance Spectroscopy (FRA/EIS). The Sensit Wearable runs autonomously for hours up to weeks, executing a MethodSCRIPT while powered from a battery, and saving data to onboard storage. Control the Sensit Wearable wirelessly or with USB using the Android app PStouch (available on my.palmsens.com), or using our PC software PSTrace. 

 

Key electrochemical specifications

The Sensit Wearable is built around the EmStat Pico Core potentiostat chip.

  • Capable of EIS up to 200 kHz
  • Potential range -1.7 to +2 V
  • Current ranges 100 nA – 5 mA (max ±3 mA)

 

Kit contents

The Sensit Wearable comes with:

  • Sensit Wearable reader
  • Evaluation board with mounting bracket, including
  • Cell cable
  • Crocodile clips
  • Accessories for various wearing options
  • Two example mounting brackets
  • Velcro strap with mounting bracket and universal SPE connector
  • Quick Start document
  • PSTrace software for Windows and PStouch software for Android

 

General
Full 
dc-potential range
 -1.7 to +2 V
Dynamic 
dc-potential range
 [1] 		2.2 V
Compliance voltage
-2.0 to +2.3 V [2]
Maximum current ± 3 mA
Max. data acquisition rate
 (datapoints/s)		 1000
Supports FRA/EIS Yes

 

[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.

 

Potentiostat (controlled potential mode)
Channels

1 channel (2x WE, 1x RE, 1x CE)
Applied dc-potential resolution3mA
 537 µV
Applied potential accuracy
 < 0.2%
Current ranges
100 nA to 5 mA (10 or 12 ranges, depending on the mode)
Current resolution 0.006% of selected current range
(5.5 pA on 100 nA range)
Current accuracy

< 0.5 % of current ±0.1% of range
Measured potential resolution (for OCP) 56 uV (for OCP)
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
Electrometer
Electrometer amplifier input
 > 1 TΩ // 10 pF
Bandwidth
 250 kHz
Other
Power USB-C and Battery 
Communication USB-C and Wireless communication BLE 5.0
Storage 14 MB for storing >450k datapoints
Size 35 x 35 x 12 mm (including the mounting bracket)
Weight 10 g
Battery

Rechargeable 50 mAh / 0.2 Wh.

Battery life 2 hours up to weeks, depending on the MethodSCRIPT. See power consumption below.
Auxiliary port 1 Auxiliary pin, used by default for internal NTC temperature measurement.
Sensor connector Via 6 spring-pin mounting bracket, or connect a regular SPE using the sensor break-out board
Operation temperature range 0 °C to +40  °C
Power consumption
off 0.1 mW 75 days
idle or measuring 92 mW 2 hours
sleep with Bluetooth connected 1 mW 7.5 days
sleep without Bluetooth connected 0.3 mW 25 days
sleep with 10 mW bias potential applied on WE1 4.44 mW 40 hours
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