quick overview :

Water Level and Flow Control Bench

Teaching Objectives of Water Level and Flow Control Bench

• The equipment allow, for example to experiment the following subjects :
• Study of a static answer (level or flow).
• Study of flow measurement with diaphragm and differential pressure transducer with digital display with square root extractor.
• Study of (Broïda or other) Identifications on the level or the flow process control.
• Study of simple level process control (with V1 or V2).
•  Study of simple flow process control
• Study of a process control by extent sharing.
• Study of a process level control with cascade on the flow.
• Study of a Split-Range process control. The model is designed so that the disturbances are easily reproducible. That’s allows a fine study of the influence of the control parameters (needle valve with 10 revolutions).

Technical Specifications of Water Level and Flow Control Bench The equipment is composed of:

- 2 tanks in altuglas - A supply tank in transparent PVC with drain valve. - The tanks can be dismantled for cleaning operations - 2 electronic flow meters - A diaphragm with differential pressure transducer and digital display with square root extractor. - A float flow meter for comparison of the flow measurement - Two pneumatic valves, Kv = 2,5 , one normally open and one normally closed, - Two converters IP - An air pressure regulator - A pressure sensor 0-1 bar with transmitter for measuring the level in tank 1 - A level sensor magnetic float type with for measuring the level in tank 2 - Two needle manual valves, with easily setting of the revolution number - A centrifugal pump in stainless steel - A controller for level control - A controller for flow control Display of the measure and the set point for the two regulators. The regulator A become the master when using in cascade mode. - The control cabinet module made of painted steel including: - The ON/OFF switch - The ON/OF light - The Emergency stop - The 2 controllers, - A 3 position switch for the selection of process control type Level process control, Flow process control, Cascade process control - The safety protection and pump control, the 4-20 mA supply of the transmitters. - A synoptic with luminescent diodes indicate the corresponding actuators, measures and valves depending of the selected loop mode. - Security plugs with the 0-10 V input and output signal from the regulators. Options : - Data acquisition module ref MAC 2 composed with : - Two regulators with RS485 communication cards - A converter RS485/RS232 - A data acquisition software under Windows allowing : Reading PID parameters, The drawing of the curves, The remote control of the regulator parameters The storage of the values - PC computer type Pentium IV Dimensions 2300 x 1700 x 1000 mm Essential requirements - Power supply : 220 V mono - 50 Hz - Compressed Air supply: 6 NL/h - 6 bars