Wireless Pressure Sensor - PS-3203



Make accurate and consistent measurements of gas pressure, regardless of ambient conditions, and explore how chemical reactions affect gas pressure.

In combination with a temperature probe, study the Empirical Gas Laws.  Can also be used in applications that previously required our Low Pressure/Barometer sensor.

The Teaching Advantage

Measures pressure relative to an internal sealed reference vacuum, which allows the collection of reliable data even when the pressure within a system drops below ambient pressure.

Supports common units (kPa, atm, psi, mmHg, or N/m2) for many applications

Related Blog Posts:
  1. Stoichiometry and Limiting Reactants
  2. Transpiration with a Potometer
  3. Under Pressure - Wireless sensor inside a balloon!

Typical Applications

  • Measure transpiration rates 
  • Measure osmosis and pressure changes inside a model cell
  • Measure rates of enzyme catalyzed reactions
  • Conduct weather experiments
  • Measure changes in elevation
  • Measure chemical reaction rates
  • Measure respiration rates
  • Conduct air foil studies
  • Model a human lung.
  • Study Vapor Pressure vs Temperature
  • Add a temp sensor to investigate Gas Laws (Ideal, Charles', Boyle's)

Special Features

  • Bluetooth® and USB connectivity with a long-lasting rechargeable battery
  • Logs pressure data directly onto the sensor for long-term experiments for activities that couldn't be performed using sensors previously.
  • No interface required! Connects directly to your devices via Bluetooth® Smart.
  • Includes a syringe, tubing and the connectors and locks you need for an array of pressure experiments.

Bluetooth Low Energy Wireless Connectivity

Required Software:

PASCO products that use Bluetooth® Low Energy connectivity (wireless sensors, Smart Carts, and the AirLink) require the latest versions of our software.

PASCO Capstone is available for Mac and Windows. SPARKvue is available for Mac, Windows, iOS, Android and Chromebooks.

Additionally, the Wireless Motion Sensor and Wireless Smart Carts can be connected via Bluetooth and used with our MatchGraph app.

Compatibility/System Requirements

Any current model Chromebook, Mac, iPad, iPhone, Android tablet or phone will support direct connection to PASCO Bluetooth Low Energy devices. Also, any Windows 10 device with Creators Edition 1703 or later will support direct connection.

Chromebook users MUST have the latest firmware updates for ALL wireless sensors in order to use them without the USB Bluetooth Adapter. Full information.

All other Windows computers/tablets, older Macs, and Chromebooks without updated sensor firmware currently require the PS‑3500 USB Bluetooth Adapter to connect to PASCO’s Bluetooth Low Energy devices.

Full compatibility details are available, including compatibility information for older computing devices.


Independent datalogging 

Long term data collection directly on the sensor

In logging mode wireless sensors collect data to their onboard memory for hours, days, weeks or even months at a time without needing to be connected to a computer, tablet, Chromebook or smartphone.

When the experiment is concluded, simply connect the sensor to a device running PASCO software and download all the measurements it recorded.



New Storage Option

Simplify storage & inventory

Custom Gratnells Tray for Wireless Pressure Sensors (PS-3586)

The precision cut inserts are designed to accommodate up to 10 Wireless Pressure Sensors

See the buying guide below for details


  • Pressure Sensor
  • 0.6m (2ft) polyurethane plastic tubing
  • Double barbed tube connector
  • Male barbed Luer lock connector (2)
  • Female barbed Luer lock connector
  • 60cc syringe
  • USB Cable (for recharging and optional direct connection)
  • Specifications

    • 0-400 kPa
    • Useful range: 20 kPa - 400 kPa
      (Values under 20 kPa may not be reliable/accurate)
    • 0.1 kPa
    • 2kPa
    Max sample rate
    • 1000 samples/second via BLE or USB connection
    • Rechargeable Lithium-Polymer
    • Expected life of 3-4 months of normal use on a single charge
    • Yes
    • Direct USB or via Bluetooth® Smart (Bluetooth 4.0)
    Max wireless range
    • 30 m (unobstructed)

    Teacher Guides and Labs

    View experiments that can be performed using the Wireless Pressure Sensor (PS-3203). There are 20 experiments available.

    Middle School Physical Science Teacher Guide (PS-3852)

    2 - Boyle’s Law

    3 - Conservation of Matter

    20 - Transfer of Energy in Chemical Reactions

    Physical Science through Inquiry Teacher Guide (PS-2843B)

    9 - Percent Oxygen in Air

    13 - Endothermic or Exothermic Chemical Reactions

    22 - Boyle’s Law

    Chemistry through Inquiry Teacher Guide (PS-2871C)

    5 - Percent Oxygen in Air

    9 - Boyle’s Law

    10 - Gay-Lussacs's Law and Absolute Zero

    23 - Rates of Reaction

    24 - Ideal Gas Law


    Volume vs. Pressure (SPARKlab)

    STEM Module: Air Bag (PS-2983)

    1 - Understanding Pressure

    2 - Pressure and Chemical Reactions

    3 - Variable Volumes

    5 - Reaction Rates

    Buying Guide

    USB Bluetooth Adapter

    Windows devices, Chromebooks and older Macs lack native Bluetooth® Smart support and require an adapter to use PASCO wireless products.

    All current model Macs, iPads, iPhones, Android tablets or phones support direct connection to PASCO Bluetooth Smart devices and do not require the adapter.

    Full compatibility details are available.

    USB Bluetooth Adapter   PS-3500
    Pressure Sensor Accessories Kit

    The Wireless Pressure Sensor includes a USB cable for charging when connected to a computer or other powered USB port. 

    But if you'd like a wall charger there are single and 10 port options.

    Pressure Sensor Accessories Kit   PS-3503
    Single Port USB Wall Charger
    10 Port USB Charging Station

    The Wireless Pressure Sensor includes a USB cable for charging when connected to a computer or other powered USB port. 

    But if you'd like a wall charger there are single and 10 port options.

    Single Port USB Wall Charger   PS-2575
    10 Port USB Charging Station   PS-3501

    Software Required

    This product requires or recommends PASCO software for data collection and analysis. Either SPARKvue software or PASCO Capstone software may be used.