A pressure transducer is a type of pressure sensor that consists of both a pressure-sensitive element, which creates a signal, and a signal-converting element. The transducer converts low-level electrical signals from input mechanical pressure (from a gas or liquid) into a proportional voltage or milli-amp output. To “transduce” means to “convert.”
The transducer reads the pressure in the fluid system. Then, the voltage or amperage outputs of the transducer can be delivered to remote locations for monitoring and to inform automated or manual control of the system. Analog output types include: 4 – 20mA, 0 – 5Vdc, 0 – 10Vdc, 1Vac, or 0.333Vac. If you’re using a digital pressure transducer (AKA a pressure transmitter), the more advanced electronics provide functionality to send signals through industry communication protocols such as Modbus or BACnet.
The definitions for pressure sensor, switch, transducer, and transmitter can easily become confusing when they’re often used interchangeably in the facilities industry. However, understanding the differences between these terms, and the roles of each device in your building systems, can help you to ensure that you’re getting the right product for the job.
A pressure sensor will detect the varied pressure and convert it into an electrical signal. This concept differs from a pressure transducer, which continuously monitors and measures electrical signals and converts them into proportional voltage. Transducers are used more often for complex and sophisticated projects.
Meanwhile, a pressure switch is a simple device that measures pressure but not from a continuous output like a transducer. It performs a specific function, such as turning something on or off based on the pressure. A pressure transmitter is similar to a transducer in function, yet sends the electrical signals as volts or millivolts instead of milliamps.
A dry pressure transducer measures differential pressure within dry media (such as air or gas ductwork), whereas a wet media pressure transducer would allow for pressure sensing in wet systems (like plumbing runs).
Veris offers transducers of both varieties, such as our innovative PX3 differential pressure and air velocity transducer for dry media, and our PWR series of remote wet media transducers.
The PX3 transducer gives you the freedom to measure air pressure or velocity with the flip of a switch. Built-in Bluetooth functionality paired with the intuitive and simple Veris Sensors App makes it easy to control the transducer without climbing any ladders to overhead ductwork. Applications include:
Learn more about the capabilities of the PX3 here or take a closer look at the datasheet.
With remote probes and no need to run plumbing lines all the way to the transducer, the PWR series greatly reduces installation time and costs. Users will benefit from pushbutton zero calibration — no trim pots to adjust — and switch-selectable pressure ranges. Applications include:
Veris offers a variety of pressure sensors and transducers to fit the needs of your analog or digital system. To learn more about our pressure sensing products, visit our website or call to speak with our sales team at 1-800-354-8556 or +1 503.598.4564.