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Pressure Transmitters Provide Reliable Performance on Filtration Systems For Hazardous Airborne Chemicals

Pressure Transmitters Provide Reliable Performance on Filtration Systems For Hazardous Airborne Chemicals
25 Aug 2023  |
A technical research, design, and manufacturing firm in the Western U.S.A. specializes in high-performance equipment used to protect the environment and personnel from the harmful effects of a wide variety of the world’s most hazardous airborne chemicals and contaminants.

That equipment includes vessels, air handling units, air cleaning and filtration systems, containment and glove enclosures, and related piping and material handling systems. Of particular note, is the customer’s technology and experience related to protection against chemical warfare agents.

This research firm has a series of air filtration systems designed and built-in accordance with the stringent requirements mandated by the U.S. Army’s Chemical Demilitarization program (Destruction of chemical weapons). These filter systems are sent to a variety of locations around the world to be used in cleaning chemical wastes. They are very important in providing safe work environments for the U.S. military personnel abroad, as well as the local civilian areas where these bases are located.


The customer needs accurate and dependable differential pressure measurements for several locations within the filtration systems. The pressure transmitter they use must meet stringent U.S. military specifications and come with the appropriate documentation and global service and support required. Some of the suppliers the customer considered could or would not meet all the requirements they needed.


The local Siemens representative presented the SITRANS P320 Differential Pressure (DP) transmitters with PROFIBUS to the customer, pointing out the major features and benefits of the instrument, including pushbutton set-up at the transmitter and a standard local display with enhanced diagnostic and scaling capabilities. He also stressed the benefits of working with a worldwide supplier of quality instrumentation. Since they were already using Siemen’s process control system SIMATIC PCS 7, they were glad to see they could get the same kind of quality in their instruments. The customer has installed the Siemens pressure transmitters at critical locations across the filtration system to measure the differential pressure and maintain the performance of the system. This allows the customer to maintain the quality and performance of their systems and deliver, as specified, to the U.S. military. The use of the PROFIBUS protocol allows the customer to gather a variety of information from the transmitters on their SIMATIC PCS 7 system.


Cost savings: Using PROFIBUS protocol allows the customer to save on cable and installation costs by connecting several transmitters to field mounted Compact Field Units (CFUs) directly to the process control system via PROFINET.

Convenience: Able to access, program, and troubleshoot all of the SITRANS P320 pressure transmitters from a single engineering station on the PCS 7 process control system, using integrated SIMATIC software.

Global service and support: Local service and support, worldwide.

Quick and easy set-up: Unique and easy to set up using the local pushbutton menu as well taking advantage of the simple plug and produce feature offered by the SIMATIC CFU which provided for easy installation as well as replacement in the field. 

About the SITRANS P320 Pressure Transmitter

The SITRANS P320 series includes digital pressure transmitters for measuring gauge pressure, absolute pressure, differential pressure, flow and level. Even the standard devices offer comprehensive diagnostics and simulation functions for superior reliability. Their suitability for use in SIL 2 circuits has been certified by external test institutes.


  • Extensive diagnostics and simulation functions
  • Suitable for installation in SIL 2 applications in accordance with IEC 61508/IEC 61511.
  • Wide range of certification and approvals, e.g., FM, CSA, ATEX, IEC Ex, etc. – All available as stand-alone or    
    combination approvals.
  • Option of using a simulation function for loop check functions opens up a host of different bus communication   
    options for you: HART, PROFIBUS PA, PROFIsafe, or FF

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Siemens brings you an innovative portfolio of process instruments for flow, level, pressure and temperature measurement, as well as a wide range of continuous weighing products. Pneumatic valve positioners, process controllers and recorders, and process...

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