Position transmitter

Nov. 29, 2023
Fisher FIELDVUE 4400 valve position transmitter offers advantages over limit switches, including improved reliability, diagnostics and SIL 2 capabilities.
Courtesy of Emerson
65675687555d8f001e5c5a15 Fisher 4400 News Brief Image

MARSHALLTOWN, Iowa (Nov. 29, 2023; Emerson release) — Emerson has introduced the Fisher FIELDVUE 4400 position transmitter for use in critical isolation valve applications, including chemical reactor feed shutdown, pressure swing absorption, mineral pressure oxidation isolation, steam generator shutdown, and others.

Isolation valves are typically outfitted with open and closed limit switches that provide valve position feedback. Unfortunately, the on/off nature of the switches severely limits the ability to diagnose valve performance, so a degrading valve will go unnoticed until it fails outright. Such a failure can have serious process implications, and it can pose safety risks as well.

HART-enabled FIELDVUE 4400 valve position transmitters offer a cost-effective solution to address this and other issues. The transmitter is very easy to calibrate, and it incorporates a proven, linkage-less design. As compared to limit switches, it provides much higher reliability, along with valve diagnostics and Safety Integrity Level (SIL) 2 capabilities—the latter often required in critical isolation valve applications. The position transmitter also includes limit switch outputs, so it can be retrofitted into an existing on/off switch circuit, while also taking advantage of the valve position information.

The position transmitter offers an inherent advantage over limit switches since it provides a continuous position indication throughout the valve stroke to a host, such as a distributed control or an asset management system, via HART. If a valve is failing to reach end-of-stroke or hanging/sticking during transition, this is immediately apparent from the position signal. Also, a failure of the transmitter itself is instantly detected as the continuous signal is lost, so it can be flagged for repair.

To learn more, please visit Emerson.com/Fisher4400

Sponsored Recommendations

Learn About: Micro Motion™ 4700 Config I/O Coriolis Transmitter

An Advanced Transmitter that Expands Connectivity

Micro Motion™ G-Series Compact, Drainable Coriolis Flow and Density Meters

Micro Motion G-Series Coriolis flow and density meters are ideally suited for Process Monitoring and Optimization applications, offering easy selection with pre-selected models...

Learn about: Micro Motion G-Series Coriolis Flow and Density Meters

The Micro Motion G-Series is designed to help you access the benefits of Coriolis technology even when available space is limited.

Micro Motion 4700 Coriolis Configurable Inputs and Outputs Transmitter

The Micro Motion 4700 Coriolis Transmitter offers a compact C1D1 (Zone 1) housing. Bluetooth and Smart Meter Verification are available.

Request More Information

By clicking above, I acknowledge and agree to Endeavor Business Media’s Terms of Service and to Endeavor Business Media's use of my contact information to communicate with me about offerings by Endeavor, its brands, affiliates and/or third-party partners, consistent with Endeavor's Privacy Policy. In addition, I understand that my personal information will be shared with any sponsor(s) of the resource, so they can contact me directly about their products or services. Please refer to the privacy policies of such sponsor(s) for more details on how your information will be used by them. You may unsubscribe at any time.