Differential pressure technology, long a mainstay for liquid level measurement, has lost ground to guided wave radar transmitters as the level control solution preferred by process industries.
Guided wave radar (GWR) instrumentation offers significant functionality and versatility. One of the newest and fastest evolving level control technologies, GWR has gained tremendous acceptance due to the significant advantages it offers over other level measurement devices. Not only does GWR generally outperform conventional level measurement technologies, a GWR transmitter is extremely compact and easy to install and operate. The latest generation of GWR transmitters is a formidable contender as a potential market-wide replacement to the still-entrenched differential pressure transmitter.
In fact, a recent study by Control Magazine found that guided wave radar is the top preferred technology for level measurement applications, at 56%, followed by ultrasonic, at 50%, then differential pressure, at 49%. The study also found that, while differential pressure transmitters remain the most widely used level control technology (at 25%), differential pressure usage had eroded 15% in just two years. Guided wave radar transmitters, on the other hand currently stand at 18% market share, up 7 percentage points in two years.*
Why is guided wave radar preferred over a differential pressure transmitter? Here are six reasons to consider GWR technology:
For a more complete analysis of guided wave radar and differential pressure technologies, Magnetrol® invites you to download our whitepaper Guided Wave Radar vs. Differential Pressure Transmitters for Liquid Level Measurement.
* Control Magazine, “Level Instrumentation and Tank Gauging Market Intelligence Report,” March 2013.