SITRANS P320/420


Smart pressure transmitters

SITRANS P320/420 digital pressure transmitters are the first 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. Both pressure transmitters have an increased proof test interval over other devices on the market, with testing periods of up to 15 years rather than every two. Your result: significantly lower maintenance costs.

Learn more about SITRANS P320/420

Download Catalog Specifications

USA | Quick ship brochure

Need a pressure transmitter NOW?

Siemens' same-day shipping has you covered 24/7/365! Our North American production footprint and comprehensive local stock mean that we have the right pressure transmitters for you, whenever you're feeling the pressure.


Sales Support: 1-800-365-8766

Ready to Order? Contact Us

Benefits of the SITRANS P320/420 pressure transmitters

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


0.065 % (SITRANS P320), 0.04 % (SITRANS P420)
Response time
Down to 105 ms
Long-term stability
≤ 0.125 % / 5 years
Measuring cells
From 8 inH2O to 10,000 psi
Max. turndown
Measured medium temperature
-40 °F to +212 °F
FM, CSA, ATEX, IEX EX, NEPSI and others
SIL-2/3 certification
Developed according to IEC 61508 standards
HART7 communication
4-20 mA/HART, PROFIBUS PA, FOUNDATION Fieldbus (coming soon)
Diaphragm materials
Stainless steel, Hastelloy, Tantalum, Monel, Gold

Measurement applications

SITRANS P320/P420 pressure transmitters are designed for applications where safety is critical: industries such as chemical, oil and gas, and power generation. Pressure transmitters are available with various types of remote seals and different versions for measuring:

  • Gauge pressure
  • Absolute pressure
  • Differential pressure
  • Level
  • Volume Flow

Download, Support, Services

Find downloads, support and services for Siemens Process Instrumentation.
Support Request

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support.

USA | Process Instrumentation Services

Process Instrumentation Services

To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

USA | Siemens Industry Online Support (SIOS)

Service catalog

As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

USA | Process Instrumentation Training

Process Instrumentation Training

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

USA | Process Safety

Process Safety

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


The portfolio for your process requirements

Every process, every facility, and every environmental constraint brings its own special requirements. For this reason, we have developed SITRANS P pressure transmitters to offer you a complete family of devices with different performances, different capacities, and different materials.

Sales Support: 1-800-365-8766

Contact Us