Paper mill in Sweden uses wireless instruments to fulfill environmental requirements

Rosemount conductivity transmitters help Korsnäs Gävle prevent discharging pollutants into local waterways.

11/16/2011


Rosemount conductivity transmitters help Korsnäs Gävle prevent discharging pollutants into local waterways.Korsnäs Gävle has deployed a group of wireless conductivity and temperature transmitters from Emerson Process Management to collect critical leak-detection monitoring data at its board and paper production unit at Gävlebukten, Sweden. Improved monitoring enables the company to verify its compliance with environmental monitoring legislation.

Water from heat exchangers at the plant is carefully monitored prior to its return to the sea. Small internal leaks may result in discharges of hazardous chemicals into the local environment. Any leak of acids, bases, or salts will raise the electrical conductivity of the water and is easily detected using a conductivity sensor. A renovation project within the utilities section meant that I/O supporting existing instrumentation was to be removed. The mill therefore needed an alternative way to transmit the required measurements to the main control room.

“Initially we considered installing new cable runs, but the process would have taken too long and would have delayed the planned renovation project.” said Peter Hallenberg, project leader process automation for Korsnäs Gävle. “The application presented a great opportunity for us to install and evaluate Emerson’s Smart Wireless technology, which takes advantage of the WirelessHART communication standard.”

The Smart Wireless devices that Korsnäs Gävle installed include a Rosemount Analytical 6081-C transmitter connected to a conductivity probe. The Smart Wireless devices that Korsnäs Gävle installed include a Rosemount Analytical 6081-C transmitter connected to a conductivity probe. The transmitter sends the measurement data via a wireless gateway to the existing control and data acquisition systems, where it is used to ensure compliance with the environmental monitoring legislation.

The mill also needed to establish new continuous monitoring of emissions from aerated basins and ponds. Technicians installed 22 new sensors measuring pH, dissolved oxygen, and water temperatures, that send data to the central monitoring system. There were no available cable runs, and new cable infrastructure presented a considerable challenge with a cost of €200 per meter. Rather than laying cables, the mill installed six Rosemount wireless transmitters, each with four available inputs, to relay data from the analytical sensors. The wireless instruments provide the necessary data to meet the environmental requirements.

“Less than two months after ordering the Smart Wireless devices, the whole system was fully operational. That is very fast for implementing 30 new measurement points,” said Hallenberg. “Now that the network is in place, we have also found that adding additional devices becomes very simple.”

Specifically, Korsnäs Gävle has installed seven Rosemount 648 wireless temperature transmitters to automate the monitoring of water temperatures in wastewater pits that feed the aerated basins and ponds. A further eight Rosemount wireless transmitters will be installed to identify plugged filters on two wood chip digesters within the main processing section of the plant.

www.korsnas.com/sv

www.EmersonProcess.com

Edited by Peter Welander, pwelander(at)cfemedia.com



No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
Each year, a panel of Control Engineering editors and industry expert judges select the System Integrator of the Year Award winners.
Control Engineering Leaders Under 40 identifies and gives recognition to young engineers who...
Learn more about methods used to ensure that the integration between the safety system and the process control...
Adding industrial toughness and reliability to Ethernet eGuide
Technological advances like multiple-in-multiple-out (MIMO) transmitting and receiving
Virtualization advice: 4 ways splitting servers can help manufacturing; Efficient motion controls; Fill the brain drain; Learn from the HART Plant of the Year
Two sides to process safety: Combining human and technical factors in your program; Preparing HMI graphics for migrations; Mechatronics and safety; Engineers' Choice Awards
Detecting security breaches: Forensic invenstigations depend on knowing your networks inside and out; Wireless workers; Opening robotic control; Product exclusive: Robust encoders
The Ask Control Engineering blog covers all aspects of automation, including motors, drives, sensors, motion control, machine control, and embedded systems.
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
News and comments from Control Engineering process industries editor, Peter Welander.
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
This is a blog from the trenches – written by engineers who are implementing and upgrading control systems every day across every industry.
Anthony Baker is a fictitious aggregation of experts from Callisto Integration, providing manufacturing consulting and systems integration.
Integrator Guide

Integrator Guide

Search the online Automation Integrator Guide
 

Create New Listing

Visit the System Integrators page to view past winners of Control Engineering's System Integrator of the Year Award and learn how to enter the competition. You will also find more information on system integrators and Control System Integrators Association.

Case Study Database

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.