Transmitters with inputs for differential pressure sensors

The GD84 Differential Pressure transmitter targets clean room applications and allows differential pressure (+/- 250 pascal) to be monitored in a single compact transmitter. The precision diaphragm solid state sensor is automatically compensated for barometric pressure and is not affected by the mounting attitude of the transmitter. The high quality quick-disconnect connector system is used to attach 6mm internal diameter tubing. An LCD provides immediate readings of differential air pressure. Using licence exempt radio enables ranges of up to 300 metres in a built environment, or up to 2km with line of sight.

The GD84 can be used with RX250AL/SC250 (Secure data CFR21 Part11) receiver loggers, RC250 receiver only and WSR, Wireless Sensor Receiver.


Built in differential pressure transducer with a range of -250 to +250 Pascal for Clean Room applications. Supplied with 2 x Cole Parmer quick connectors for 6mm I/D tubing.


  • Duct air flow measurements
  • Clean room pressure
  • HEP Filter monitoring



WBG Wall bracket docking kit

This kit enables fitment of the transmitter's built-in wall bracket to difficult or uneven surfaces. The kit provides additional docking security.

The following products are supported:

  • All GD, GC, GL and GS series transmitters
  • RP250GD repeater and RC250 receiver


Transmitter Specification

Model(s) Sensors Range Resolution Accuracy
GD84 1 x built-in differential air pressure -250 to +250 Pascal 0.1 Pa ±3 Pascal

Common GenII Transmitter Specification

RF specification: EN300-220
RF power: 10mW
Environment specification  
  Compliant to EN300-220: -10 to +55°C
  Actual: -30 to +65°C
  Humidity: 100% non condensing
Environmental rating: IP40
Dimensions (footprint): 78 x 41mm
Transmission interval range: 1 sec to 4 hours
Indicator (red LED): transmit active/on/off
Control switch (concealed): test mode / hibernate
Antenna socket: SMA


Common to all transmitters

Gen II Quick Start Instructions

Specific to this family of transmitters

GD84 Datasheet