Application Areas; Control And Display Of Flows In Pipe Runs; Ratio Control - Burkert 8623 Instructions De Service

3

APPLICATION AREAS

3.1

Control and display of flows in pipe runs

Standard
signal input
Flow sensor
3.2

Ratio Control

• Mixing of two liquids
• Control of a liquid flow above a second liquid flow
In ratio control, the flow in one pipe run is fed into the flow in a second pipe run
at a certain ratio. The ratio is adjustable between 0.01 and 9.99. The two flow
rates are measured using two flow sensors with frequency outputs.
Q = V * Q
1
Flow sensor 2
Fig. 2: Layout of a ratio control using the Type 8623 compact flow controller
(circuit)
Regulated flow
Proportional valve
Q
V
2
Q
Flow sensor 1
Regulated flow Q
Flow Q (unregulated)
2
Flow controller
Fig. 1: Layout of a
control system using the
Type 8623 compact flow
controller (circuit)
regulated flow
1
ratio factor
unregulated flow
2
1
Proportional valve
Flow controller
8623 - 3