Air Data Computers

PMH-1, PMH-2 & PMH-3

The PMH-1 is a highly accurate absolute pressure module that provides pressure and altitude data over a digital RS-485 data interface. The PMH-1 uses an aviation grade pressure sensor with microprocessor based signal compensation over the full temperature range.

The PMH-2 is a highly accurate absolute pressure module that provides pressure and altitude data over a digital RS-485 data interface. The PMH-2 is the more cost effective solution with an industrial type absolute pressure sensor.

Data-Sheet PMH-1, PMH-2

The PMH-3 is a highly accurate differential pressure module that provides pressure and airspeed data over a digital RS-485 data interface. The PMH-3 uses a silicon based pressure sensor with microprocessor based signal compensation over the full temperature range.

Data-Sheet PMH-3

Typical Application

  • Altimeters
  • Air Data
  • Flight Testing
  • UAV, Drones
  • Meteorological Applications
  • Weather Stations

Key Features

  • Small, robust, simple
  • Aviation grade absolute pressure sensor with high accuracy and low drift (PMH-1 & PMH-2)
  • Silicon differential pressure sensor with high accuracy and low drift (PMH-3)
  • RS-485 half-duplex data interface, suitable for use in high-noise environments on long cables
  • Compatible with Swiss-Airdata line of Air Data Systems
  • Fully temperature compensated from -55°C .. +80°C (power up above -40°C)
  • Very low transport delay
  • Easy configuration of output rate, digital filters, baud-rate via maintenance software