HVAC Transmitter

Model 868

The Waddell HVAC Transmitter will read, display, and output selectable air flow or velocity and air stream temperatures.


The internal components include a high-accuracy differential pressure transmitter, a microcontroller, display for flow / velocity and temperature, and terminals for voltage output to a BMS.


A temperature probe is included for a field selectable location and wiring to the enclosure. The output signal from the pressure transmitter is sent to the on-board computer for square root extraction, which outputs a signal linear to flow or velocity.


An auto zero switch is included to confirm transmitter calibration.


Applications and Benefits



  • Pharmaceutical Manufacturing

  • Clean Spaces

  • Containment Areas



  • Rugged, One Piece Installation

  • Instant Data Display

  • Accurate Process Signals



868 Product Bulletin