Built around Hycontrol's patented SureSense+ foam monitoring and control technology, the new PFRC Automated Antifoam Dosing panel combines high-accuracy foam detection with precision defoaming chemical dosing.
The system detects and differentiates between aqueous foam and liquid. Once the foam is detected, the system can control it by utilising one of a selection of control algorithms; the controller can activate the panel's dosing pump to keep the foam at a fixed level or reduce the foam height as required. In addition, users can select proportional or delay-and-shot algorithms for antifoam dosage.
The system can monitor two tanks independently and is perfect for use in applications such as Anaerobic Digestion. Hycontrol has supplied these systems for use on digesters throughout the UK AD industry, as insurers increasingly mandate the use of control systems. Within digesters, aside from preventing overspills and maintaining safety, this technology has been shown to reduce the use of antifoam/defoamer significantly.
With patented IMA sensing® technology, the control system will operate correctly even if the foam sensors are coated or fouled with the product. The controller has an adjustable response time to discriminate between foam, splashing, or other spurious triggers. Thresholds are adjustable for both foam and liquid levels to allow for light foams. ATEX versions are available, and the dosing panel has five configurable relays.
The dosing pump features a selectable manual or automatic control configuration and a variable flow rate. In addition, three different pump sizes are available, giving total flexibility for most applications.
The system uses a low-level float switch within the IBC/antifoam tanks, enabling it to stop dosing when the antifoam/defoamer runs out. This low-level alert will also illuminate an LED on the panel to advise users that they have run out of chemicals. Optional panel extras include sirens and beacons.
Please note: Hycontrol foam probes are NOT modified level sensors. They have been custom-designed for the foam control application. Competing systems are likely modified level sensors, not made to work with foam. In addition, traditional level technologies are inferior at detecting light and airy foams. Users must remember this distinction when selecting a foam control and antifoam dosing system.
