Integrated PID for direct pump control
Just by adding a mass flow meter or volume flow meter to your process, you will not get the best solution as you still need an additonal PID controller to drive a pump to achieve the desired dose or flow. The PID controller is used to compare the real flow signal with the desired flow. The Bronkhorst Coriolis mass flow meters and ultrasonic volume flow meters have an integrated PID controller. So, by using these instruments it is not necessary to add an additional PID controller. You do not have to include the pump in the control system anymore, you just give a set point demand to the flow meter and it will drive the pump to the desired flow. The big advantage here is that the mass flow meter or volume flow meter use a high frequency signal, which makes this way of controlling the pump much faster than the traditional way of pump control.
It's like a black box: You indicate your desired flow and the black box generates this flow for you, stable and with a high accuracy as well.
Your benefits
- Less waste & cost reduction: You know what you pump in real-time.
- Less down time; Fluid independent flow measurement and control - no need for recalibration when changing fluids.
- Real measurement of data on flow performance for quality and monitoring purposes, including a response alarm.
- Automatic correction for decreased pump performance over time.
- Correction on ambient conditions that have an influence on your physical properties of the fluid.
- Integrated PID controller for fast and accurate flow control.
- Remote communication with the control loop via Bus protocol.