Air content control system

The PMC-Paprican Air Content Probe and Control System has been designed specifically for use in the pulp and paper industry. It can also be used effectively in other applications where the measurement or control of air content is important, such as water/waste and mining industries.

The system provides an effective solution to identify and control problems before they start. It utilises high accuracy, durable ceramic sensors that are suited for measuring levels and pressures in paper slurry applications. Other applications include controlling the defoamer in recycling and brownstock washing, and verifying the signal from a consistency meter.

The system provides real-time measurement of entrained or injected gas content in a pre-determined zone of an aqueous suspension. Two PMC flush-mounted pressure sensors are placed in direct contact with process liquid. The sensors are typically fixed laterally on one or more pipes that are firmly held in place on a plate or in flanges mounted on the top or side of a tank, vessel or flotation cell. The change in pressure between them provides an accurate measurement of dispersed gas content.