Ponton Industries

SITRANS P320/420

Process Instrumentation

Pressure Transmitter  

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 programming each individual device across a facility, operators can access transmitters from the control room. This reduces the commissioning time in applications requiring functional safety. Both pressure transmitters have an increased proof test interval over other devices on the market with testing periods of up to fifteen years rather than every two. This lowers maintenance costs significantly.

Catalog Specifications

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  • Reduced commissioning time due to remote safety handling
  • Suitable for harsh conditions due to robust materials
  • User-friendly due to clear and large display and diagnostic icons acc. to NAMUR NE107 and a quick start wizard
  • Maintenance cost reduction due to proof test interval up to 15 years
  • Fast reaction and optimized processes due to reduced response time


 Accuracy0,065 % (SITRANS P320), 0,04 % (SITRANS P420)
  Response Timedown to 105 ms
Long Term Stability ≤ 0.125 % / 5 years
Measuring Cells from 20 mbar to 700 bar
Max. Turndown 100:1
  Measured medium Temperature-40 °C to +100 °C
Certificates / Approvals ATEX, IEC EX, FM, CSA, NEPSI and others
SIL-2/3 certification Developed according to IEC 61508 standards HART7 communicationHART7 communicationHART7 communication
Communication 4…20 mA/ HART, PROFIBUS PA (in preparation), FOUNDATION Fieldbus (in preparation)
Diaphragm materials
 Stainless steel, Hastelloy, Tantalum, Monel, Gold

Range of application

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