Static differential pressure transmitter

The SDA-P is a programmable differential pressure transmitter. It measures the pressure by the use of a diaphragm that transfers the force onto a ceramic fulcrum lever. The signal is temperature compensated and calibrated. The microprocessor samples the pressure once per second. It calculates an averaging signal over a preset number of seconds and generates an output signal based on minimum and maximum pressure values.



  • Pressure measurement in the field of heating, ventilation and air conditioning
  • Measuring of air flow velocity
  • Measuring and control of positive or negative pressure for example for clean rooms
  • Measures exactly the range you need
  • Recording of minimum and maximum values for critical environments
  • Supervision of critical pressures


  • Pressure measurement from 300 Pa up to 5 kPa (1.2 in WC to 20 in WC)
  • Programmable pressure output signal range
  • Selectable square root function
  • Minimum and maximum pressure memory
  • 0…10 V or 0…20 mA measuring signals, selectable with jumpers
  • Selectable averaging signal


 Item name  Item code  Description
 SDA-P1  40-300045  Pressure range 0...300 Pa (1.2 in WC)
 SDA-P2  40-300046  Pressure range 0...500 Pa (2 in WC)
 SDA-P3  40-300047  Pressure range 0...1 kPa (4 in WC) 
 SDA-P4  40-300048  Pressure range 0...3 kPa (12 in WC) 
 SDA-P5  40-300049  Pressure range 0...5 kPa (20 in WC)


OPA-S - Remote Display
Operation and display for intelligent transmitters


Operation Manual

Install Sheet

Application Notes