Device integrates gas flow control functions with mass flowmeter
Simplifies basic flow control installations and helps network multiple instruments.
The Compod from Sierra Instruments serves as a programmable control module working with mass flow meters to create gas flow control systems.
The company says that with its advanced capabilities, coupling the Compod with Smart-Trak mass flowmeters and controllers greatly simplifies basic flow control installations and permits networking of multiple instruments using open-source Modbus RTU protocol. With two digital outputs and one analog input, the Compod can be configured by the end user for a wide variety of process controls including:
Gas mixing and blending;
Gas ratio control;
Simple batch processes;
Starting or stopping gas flows automatically under user-defined conditions; and
Gas flow totalization.
Compod also monitors the functionality of the mass flowmeter or controller and includes diagnostics, notifying users of faults or system updates.
The Compod mounts to any Sierra Smart-Trak 100 Series unit, converting the instrument’s internal RS-232 communications into multi-drop RS-485/Modbus RTU. With Modbus, multiple instruments can be daisy-chained over a single network. When used with a PLC or master computer, each instrument equipped with Compod becomes a node capable of sending and receiving data and commands.
Users can use Sierra’s provided software or write proprietary software using open-source Modbus protocol to configure standard functions for the Smart-Trak 100 Series. Compod’s two digital input/output channels and the analog input channel and a configurable pulse output channel can automate gas processes without the need for an external PLC or computer.
—Edited by Peter Welander, process industries editor, PWelander@cfemedia.com
Process & Advanced Control Monthly eNewsletter
Register here to select your choice of free eNewsletters.
|Search the online Automation Integrator Guide|
Case Study Database
Get more exposure for your case study by uploading it to the Control Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.
These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.
Click here to visit the Case Study Database and upload your case study.