Wireless Differential Pressure and Differential Temperature Sensor – Differential by Wireless Connection – Leap Sensors

This very unique wireless sensor works by comparing the readings from one device node to another user-selected device node – then reporting the local pressure, local temperature – then differential pressure and temperature as compared to a user selected sensor.

For example, sensor A is located outside at ambient temperature and pressure.  Sensor B is located in a clean room under positive pressure and Sensor C is located in a different part of the cleanroom under a higher positive pressure.  Sensor B could be configured to report its pressure and temperature and the differential pressure between Sensor B and Sensor A.  (See the screen shot).  Sensor C could be configured to report its pressure and temperature and the differential pressure and temperature between sensor C and sensor B.

Sensor readings are reported in PSIA.

Leverage the Leap SensorManager software to send text, email, or telephone alerts when a pressure, temperature, or delta-pressure or delta-temperature threshold is exceeded.

Integrate the data from the differential pressure sensors into other software using our web-based API, Modbus, DNP3, or other data interface protocols.

The wireless sensor can be configured with pressure sensors that have different ranges, resolutions, and accuracies for different applications. See the specification below for more information on the different options.

Pressure sensors can be configured to specific applications.  The pressure and temperature sensors in the photos have the pressure and temperature sensor sealed inside the enclosure with a pressure port in the back of the enclosure.

Part of the breakthrough Leap Sensors® system.


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Leap Sensors are specially designed to easily adapt to your specific needs. If this isn’t exactly what you need, please contact us.

Differential Temperature and Pressure

Each device node includes a temperature and pressure sensor.  For each device node, the user can use the software to select a different device node to calculate a differential pressure and temperature.

Pressure Sensor Specifications

  • 24 bit resolution
  • 0 to 5 bar (0 to 72 PSIA)
  • -40C to 85C (-40F to 185F)
  • Resolution: 0.036 mbar
  • Long term stability: +/- 1mbar/yr
  • Pressure accuracy:
    • At 20C and 300 to 1100 mbar: +/- 1.5 mbar
    • At 20C and 0 to 5000 mbar: +/- 80 mbar

Contact Us to integrate an application-specific pressure sensor with the Leap Sensors wireless system.

Temperature Sensor Specifications

  • Range: -40C to 85C
  • Resolution: < 0.01C
  • Accuracy:
    • From 0 to 85C: +/- 2.5C
    • From -40 to 85C: +/- 5C

Contact us if you need higher accuracy than our standard product.

Leap Wireless Sensor Transceiver Node Specifications

  • Transmission distance to gateway: typically 1500 feet in open air. Several hundred feet in an industrial environment.
  • Battery
    • Field replaceable two AA alkaline batteries.
  • Rugged sensor enclosure
  • Industrial power switch: Protected by metal switch guard. IP66 rated.
  • Long-range antenna inside the enclosure: Keeps the total footprint small and prevents damage to the antenna.
  • High operating temperature: Standard sensor -40C to 85C (-40F to 185F).
  • 2-way communication with the sensor through the user interface:
    • Name the sensor, set sensor sampling time interval, set wireless transmit time interval, over-the-air firmware updates.
    • Gateways send an acknowledgement to the sensor that the data was received for high reliability.
  • Sensor data logging: When sensors do not receive an acknowledgement from the gateway that the radio transmission was received, the sensor will store the time-stamped data on-board (up to 10,000 readings) until the gateway connection is established.
  • Reliable industrial over-the-air radio communication
    • Industry-standard 802.15.4 with Direct Sequence Spread Spectrum (DSSS).
    • Gateway “handshake” acknowledgement of successful transmission and sensor data logging for extra reliability.
  • Over-the-air protocol: Standard and established 6LoPan and Thread.
  • Data security: “gold standard” internet security with AES encryption.
  • FCC certified.

Leap Wireless Sensors Gateway (Receiver) and User Interface Software

  • See the Leap Sensors gateway page and the Leap Sensors User Interface options page for more detailed information.
  • Leap Sensors wirelessly transmit data to a gateway*.
    • Gateway can support over 250 sensors that are in range. (Additional gateways can extend sensor coverage.)
    • The gateway then passes the data to the Leap user interface software. The user interface software may be hosted on the gateway (and connected to a PC with a USB cable), on the password-protected Leap Sensors Cloud web site, or an on-site server.
  • User interface supports: logging-in, set user rights, view sensor data, set email and text alerts (cloud version), graph sensor data, download data to excel, add or subtract sensors, update firmware, and other functions.

*Custom-ordered leap sensors are available with a direct-to-cellular option where no gateway is needed and the data is sent directly to a cloud server. Contact us for more information.

About Leap Sensors®

Better Design – Better Data – Better Decisions™

Based on Phase IV Engineering’s 25 years of wireless sensor experience, Leap is THE system designed from the ground up to meet the specific needs of industrial users. These sensors are a true leap advancement in Industrial IoT wireless sensing.

  • Modular design makes it easy & cost-effective to adapt to your specific needs – and update easily for a “future-proof” system.
  • Edge computing manages large amounts of data before transmission to software – only get information you need.
  • Bank standard data security: Multi-layered Thread network security using AES-128 data encryption.
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Prices, Quotes, Questions...

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This wireless sensor is ideal for monitoring:

  • Differential pressure between rooms
  • Differential pressure from ambient
  • Cleanroom monitoring

Patents pending.

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