The SITRANS P500 pressure transmitters can be used in industrial areas with extreme chemical and mechanical loads. Electromagnetic compatibility in the range 10 kHz to 1 GHz makes them suitable for locations with high electromagnetic emissions.

Pressure transmitters with type of protection "Intrinsic safety" and "Explosion-proof" may be installed within potentially explosive atmospheres (zone 1) or in zone 0. The pressure transmitter comes with a CE-declaration of conformity and fulfils the corresponding unified European directives (ATEX).

Pressure transmitters with the type of protection "Intrinsic safety" for use in zone 0 may be operated with power supply units of category "ia" and "ib".

By fitting a new measuring cell, it is possible to work with media temperatures of -40 °C (-40 °F)) to 125 °C (+257 °F)) without the use of a remote seal.

The transmitters can be equipped with various designs of remote seals for special applications such as the measurement of highly viscous substances.

The pressure transmitter can be fully parameterized locally via the three operating keys and externally via HART communication.

Pressure transmitters for differential pressure and flow

• Measured variables:
  • Differential pressure
  • Small positive or negative pressure
  • Flow q ~ √Δp (together with a primary differential pressure device (see Chapter "Flow Meters"))
• Span (infinitely adjustable)
  for SITRANS P500 HART: 1.25 mbar to 1250 mbar (0.018 psi to 18 psi)

Pressure transmitters for level

• Measured variable: Level of aggressive and non-aggressive liquids in open and closed vessels.
• Span (infinitely adjustable)
  for SITRANS P500: 1.25 mbar to 1250 mbar (0.018 psi to 18 psi)
• Nominal diameter of the mounting flange
  • DN 50 / PN 40
  • DN 80 / PN 40
  • DN 100/ PN 16, PN 40
  • 2 inch/class 150, class 300
  • 3 inch/class 150, class 300
  • 4 inch/ class 150, class 300
  • customized special version

In the case of level measurements in open containers, the low-pressure connection of the measuring cell remains open (measurement "compared to atmospheric").

In the case of measurements in closed containers, the lower-pressure connection has to be connected to the container in order to compensate the static pressure.

The wetted parts are made from a variety of materials, depending on the degree of corrosion resistance required.