SITRANS P320/420

The first pressure transmitter with remote safety handling

SITRANS P320/420 is the first pressure transmitter on the market to feature remote safety handling. The instruments’ remote safety handling via SIMATIC PDM saves time during SIL commissioning: rather than manually attending to each individual device across a facility, operators can program transmitters from the control room. This reduces the commissioning time in applications requiring functional safety.

The devices are suited for applications where safety is critical: in industries such as chemical, oil and gas, and power generation.

Besides that both pressure transmitters have an increased proof test interval over other devices on the market, significantly lowering maintenance costs with testing periods of up to fifteen years rather than every two.

The reduced response time of the devices optimizes the process efficiency by speeding up the control system’s response to changing application environments.

SITRANS P320/420’s user-friendly features also include a new larger and improved HMI display, showing users the device’s status at a glance. The setup is convenient and quick thanks to four-button programming, NAMUR NE107 support and a quick start wizard.


Accuracy:0,065% (SITRANS P320), 0,04% (SITRANS P420)
Response time:down to 105 ms
Long-Term Stability≤ 0.125 % / 5 years
Measuring cells:from 20 mbar to 700 bar
SIL-2/3 certification:Developed according to IEC 61508 standards 
HART7 communication


  • Full SIL-2/3 assessment
  • Reduced commissioning time due to remote safety handling
  • Suitable for harsh conditions due to robust materials
  • User-friendly  due to clear display and diagnostic icons acc. to NAMUR NE107
  • Maintenance cost reduction due to proof test interval up to 15 years
  • Fast reaction and optimized processes due to reduced response time