Emerson Integrates Valve Position Transmitter and HART 7 Communications Within its Digital Valve Controller

The discrete switch is a solid state circuit (1-amp maximum) that opens and closes based on a user configurable trip point. The trip point can be based on valve travel anywhere within the calibrated travel range or on a device alert.

The position transmitter is independent from the digital valve controller with the power coming from the control system analog input channel in the same manner as a standard 2-wire transmitter.

For more information, visit www.emersonprocess.com

RELATED CONTENT

Best Practices in Pressure-Relief Valve Maintenance and Repair

In their presentation at the Valve Repair Council Repair Meeting & Exhibition, Nov. 1 and 2, 2012, in Houston, Bob Donalson and Kevin Simmons of Pentair Valves & Controls shared valuable information about maintenance and repair programs for pressure-relief valves.
Solenoid Valves: Direct Acting vs. Pilot-Operated

While presenting in a recent VMA Valve Basics 101 Course in Houston, I found myself in a familiar role: explaining solenoid valves (SOVs) to attendees. (I work with solenoids so much that one VMA member at that conference joked that I needed to be wearing an I Heart Solenoids t-shirt). During the hands-on “petting zoo” portion of the program, which involves smaller groups of attendees, one of the most frequently asked questions I get from people came up: What’s the difference between direct-acting and pilot-operated SOVs, and how do we make a choice?
Flow Control Valves: Common Problems and Solutions in Energy

When systems are operating optimally, they can improve productivity, lower operating costs, increase reliability, reduce emissions and enhance safety.