Siemens SITRANS P320/P420 Pressure Transmitters

Siemens SITRANS P320/P420 Pressure Transmitters

SITRANS P320/P420 is the first pressure transmitter on the market that features remote safety handling. The instruments' remote safety handling via SIMATIC PDM saves time during SIL commissioning: operators can program transmitters from the control room instead of manually attending to each individual device across a facility. This reduces the commissioning time in applications requiring functional safety.
SITRANS P320/P420 is suitable for applications in challenging industries such as chemical, oil and gas, and power generation.
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Product Details


SITRANS P320/P420 pressure transmitters are available in various versions for measuring: gauge pressure; absolute pressure; differential pressure; level flow; volume flow; mass flow.

SITRANS P320/P420 pressure transmitters can be used in industrial areas with extreme chemical and mechanical loads.

The pressure transmitters can be used in zone 1 or zone 0 with the corresponding Ex approval.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 operated locally over 4 input buttons or programmed externally over HART interface.


⒈Diagnostic functions in accordance with NAMUR recommendation NE107

⒉SIL devices developed according to IEC 61508

⒊SIL validation on the device or remotely with SIMATIC PDM

⒋Reduction of internal inductance for Ex applications to LI = 0

⒌Step response time for pressure type T63 = 105 ms and for differential pressure type 135 ms.

⒍Minimal conformity error

⒎Very low temperature influence

⒏Very good long-term stability

⒐High quality and service life

⒑High reliability even under extreme chemical and mechanical loads

⒒For corrosive and non-corrosive gases, vapors and liquids

⒓Extensive diagnostics and simulation functions

⒔Separate replacement of measuring cell and electronics without recalibration

⒕Wetted parts made of high-grade materials (e.g., stainless steel, alloy, gold, Monel, tantalum)

⒖Infinitely adjustable spans from 0.01 bar to 700 bar (0.15 psi to 10153 psi)

⒗Convenient parameterization over 4 input buttons and HART interface





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