Instrument cabinets / housings
Process control systems
Measuring water quality frequently builds up an accurate picture of water quality and detects even the smallest drop in standards. This enables a proactive approach to be taken with regard to replacing damaged membranes. Damaged membranes in reverse osmosis processes can result in contamination and damage in high-quality water applications.
Bürkert's sampling system checks membrane integrity and can issue alerts as well as isolate damaged membranes from the larger process.
Based around a pre-assembled cabinet that contains a Bürkert valve island and the HMI controls and display, the sampling system can be arranged to collect data on one, or several, parameters such as turbidity, conductivity, chlorine and pH. Sampling intervals can be adjusted to suit the application, with the system being flushed with purified water after each cycle.
With pre-set alarm points for each parameter being tested, the system will automatically re-test the sample water that has exceeded a threshold value to confirm the readings. Once confirmed, the sampling system can be set up to issue alerts and operate shut-off valves that can isolate the damaged membrane from the rest of the system, allowing the production process to continue.
The system can be designed as a stand-alone unit with a plug-and-play control module, or it can be delivered as a hardware bundle that can be integrated into the process infrastructure. To accommodate this, the communication systems are flexible with Bürkert offering Profibus DP, Profinet, CAN open, Device net, Fieldbus AS Interface and Interbus protocols to suit almost every industrial setup.
The speed and increased frequency of testing delivered by this system offers considerable benefits to businesses that operate reverse osmosis and nanofiltration units. Productivity can be maintained, even in the event of a membrane failure and test data is retained for trend analysis and audit purposes. Automation of this crucial process has the potential to make significant savings for industries that rely on high quality process water.