The RA33 batch controller provides precise sensing and dispensing of liquids in food, chemical, pharmaceutical, oil and gas, and other process industry applications. It monitors flow, temperature and density; controls valves and pumps; and dispenses the exact amount requested by the programmed recipe. The controller can work with a single valve and pump in automatic or manual mode, or with two valves for two-stage batching. Two can work together for batch mixing of two ingredients.