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Inside the DMP 331: A Versatile Pressure Transmitter for Industrial Applications

Pressure transmitters are often invisible to the end user, but to engineers, they are the heartbeat of a system. If a pressure reading drifts, spikes, or fails, the entire process can grind to a halt. That is why the choice of transmitter is critical. Among BD|SENSORS’ wide range of solutions, the DMP 331 has become a cornerstone product for industries that demand reliability and flexibility.

What Makes the DMP 331 Different?

The DMP 331 is a stainless steel pressure transmitter designed for both gases and liquids. Its hallmark is versatility. Engineers can specify pressure ranges from vacuum up to 1,000 psi, select different output signals (including 4 … 20 mA and 0 … 10 V), and choose from a wide catalog of mechanical and electrical connections.
That adaptability means the DMP 331 can be built into hundreds of different OEM systems without requiring redesigns or compromises. Instead of forcing the application to fit the transmitter, the transmitter is configured to fit the application.
But versatility is only valuable if it’s backed by performance. The DMP 331 offers accuracy up to 0.10% FSO, long-term stability, and rugged construction with stainless steel wetted parts. For many OEMs, that combination—configurability and reliability—makes it the go-to choice. The DMP331 is also available in gauge or absolute reference. 

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Key Features at a Glance

Although the DMP 331 is customizable, its standard capabilities give it a strong foundation:

  • Pressure Ranges from 0…50inH₂O up to 0…1000psi
  • Materials: Stainless steel 1.4404 (316 L)
  • Output Signals: 4–20 mA, 0–10 V, and others for seamless integration
  • Process Connections: G1/4”, 1/4” NPT, flush-mounted, and more
  • Optional Certifications: Intrinsically safe (ATEX / IECEx) for hazardous areas
  • Customizable Designs for OEM applications

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Addressing Common Concerns

Some engineers hesitate to adopt a “versatile” product, fearing it will be a jack-of-all-trades but master of none. In the case of the DMP 331, the opposite is true. Its modular design ensures that every configuration is optimized for its intended environment. Whether measuring hydraulic pressure at hundreds of psi or monitoring a low-pressure air system, the performance remains consistent.
Another concern is long-term stability. Many transmitters perform well at first but require recalibration within months. BD SENSORS has addressed this through careful sensor element design and robust manufacturing. The DMP 331 is built for stability, giving OEMs confidence that readings will stay within spec over time.

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Integration with Modern Systems

Today’s industrial systems are increasingly digital, feeding data into SCADA, IoT platforms, and cloud-based analytics. The DMP 331 supports this trend with output signals compatible with modern control systems. Its durability ensures that once integrated, it will continue to provide reliable data without interruption.
For OEMs developing new equipment, the DMP 331 also simplifies design. Its broad range of options allows for future-proofing: as client needs evolve, the transmitter can be reconfigured without requiring a redesign of the overall system.

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The Bigger Picture

The DMP 331 is not just a pressure transmitter; it is part of a larger philosophy at BD SENSORS: giving customers the ability to choose exactly what they need, rather than forcing compromises. This customer-focused design approach is why the DMP 331 has become one of the most widely adopted transmitters in BD SENSORS’ portfolio.

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Conclusion

For OEM’s, factories and your next project, the DMP 331 pressure transmitter has proven its value. Its combination of versatility, du

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