The operation of a peristaltic pump consists of three parts: start, operation, and stop (feedback).
- Start is the process of the peristaltic pump receiving control signals. These signals include start/stop signals, analog signals, and pulse signals, etc. Please refer to another article for details. Start determines the operating mode and duration of the peristaltic pump; it marks the transition from a stopped state to an operating state.
- Operation is the state in which the peristaltic pump begins to work. When the peristaltic pump receives a control signal, the motor starts running, transmitting kinetic energy through the motor bearings to the pump rollers. The rollers in the rollers push the tubing forward, creating a sealed space between each pair of rollers. The forward movement of the rollers propels this sealed space forward, achieving the purpose of transporting various liquid media. In operation, the peristaltic pump operates at a constant speed to transport the liquid media. Intermittent operation allows for liquid filling, while variable speed operation allows for liquid delivery at different speeds based on different times or media conditions.
- Stop(feedback) is the action of the peristaltic pump after the operation phase ends. Stopping is relatively simple; the peristaltic pump will quickly stop running, locking a certain amount of liquid at the pump outlet. Feedback refers to the peristaltic pump sending its operating status and information to the control system as signals. The peristaltic pump itself does not actually provide feedback; it requires other instruments such as flow switches or Hall effect sensors to provide feedback signals.