Last Updates: 15/02/2021

Gems Air Pressure Sensor (865 Series)

The Gems 865 series air pressure sensors are very low-pressure sensors for ranges as low as 0.25″ (6.35 mm) W.C. and feature ±1% full-scale static accuracy. Primarily used in Building Energy Management these transducers are capable of measuring air pressures and flows with the accuracy necessary for proper building pressurization and airflow control. 865 series differential air pressure sensor utilizes an all-stainless steel micro-tig welded sensor that allows up to 10 psi (.69 bar) overpressure (in either direction) with no damage to the unit. All air pressure sensor components have thermally matched coefficients, resulting in improved temperature performance and excellent long-term stability.


  • HVAC
  • Energy Management Systems
  • Variable Air Volume and Fan Control (VAV)
  • Environmental Pollution Control
  • Static Duct and Clean Room Pressures
  • Oven Pressurization and Furnace Draft Controls

Datasheet: Gems_865-series-datasheet
Instruction Manual: Gems_865_Manual

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