Pressure regulator: Pneumatic controller saves natural gas

Economizing when natural gas has to substitute for compressed air.

03/20/2008


Some of the areas where pneumatic controllers still thrive are natural gas pipelines. Often these are in remote locations where power is not routinely available, so the compressed gas is used in place of compressed air. This works, but given the growing cost of natural gas combined with its greenhouse gas characteristics, this is a much less attractive choice. The new C1 pneumatic controller from Fisher ( Emerson Process Management )

Fisher has calculated that replacing an older high-consumption device with a C1 can save from 1,000-5,000 cubic meters of methane per year, typically worth $350 to $1,400, so the new unit can pay back the cost of replacement in less than one year.

The design features a new patented proportional band adjustment assembly to replace the three-way valve. The company says this provides even more reliable control and increased safety even in applications handling sour process fluids.

In operation, the C1 compares sensed process pressure to an operator adjusted set point, and sends a pneumatic signal to the adjacent control element that maintains the set point value. Units are available with various control approaches: proportional only, proportional plus reset, differential gap, and transmitter.

—Edited by Peter Welander, process industries editor, PWelander@cfemedia.com ,
Process Instrumentation & Sensors Monthly

Register here and scroll down to select your choice of free eNewsletters.





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Salary and career survey: Benchmarks and advice; Designing controls; Remote data collection, historians; Control valve advances; Hannover Messe; Control Engineering International
System integration: Best practices and technologies to help; Virtualization virtues; Cyber security advice; Motor system efficiency, savings; Product exclusives; Road to Hannover
Collaborative robotics: How to improve safety, return on investment; Industrial Internet of Things, Industrie 4.0: World views; High-performance HMI, Information Integration: OPC and OMG
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
PLCs, robots, and the quest for a single controller; how OEE is key to automation solutions.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Getting to the bottom of subsea repairs: Older pipelines need more attention, and operators need a repair strategy; OTC preview; Offshore production difficult - and crucial
Digital oilfields: Integrated HMI/SCADA systems enable smarter data acquisition; Real-world impact of simulation; Electric actuator technology prospers in production fields
Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors
click me