1.- Study of the main drainage processes between storage reservoirs.
2.- Demonstration of transient drainage processes in two consecutive storage reservoirs.
3.- Determination of discharge in two consecutive storage reservoirs.
4.- Demonstration of transient drainage processes in a rainwater retention basin.

5.- Measure of the oscillations of the surge chamber.
6.- Measure of the natural frequency of the surge chamber.
7.- Measure of the water level fluctuations.
Other possible practices:
8.- Sensors calibration.
9-27.- Practices with PLC.

1. PDDRC. Unit:

The Computer Controlled Unit for Transient Drainage Processes in Storage Reservoirs (PDDRC), allows to simulate transient drainage processes between storage reservoirs and the operation of a surge chamber. This unit allows to investigate transient drainage processes in storage reservoirs, to simulate a rainwater retention basin and to study the operation of a surge chamber.

Metallic structure and panels in painted steel.
Diagram in the front panel with similar distribution to the elements in the real unit.
Upper reservoir (of stainless steel):

- Dimensions: 1000 x 1000 x 350 mm.
- It includes an adjustable rectangular weir, which can be used as a gate or as an overfall weir; gate opening: 1.6 mm; weir height: 225 mm

Lower reservoir (of stainless steel):
- Dimensions: 1000 x 1000 x 350 mm.
- It includes an overflow and a drainage line.

Surge chamber (of PMMA):
- Inner diameter: 64 mm.
- Height: 2000 mm.

Computer controlled pump.
Four valves: one to regulate the inlet flow, two in the drainage line of the lower reservoir and the last one in the drainage line of
the surge chamber.
One gate in the drainage line of the surge chamber to generate water hammers.
One protective cover to prevent spillages.
Flow sensor to measure the water inlet flow.
Pressure sensors:

- Two sensors to measure the water levels in the reservoirs.
- One sensor to measure the water level fluctuations in the surge chamber.

2. PDDRC/CIB.Control Interface Box :

With process diagram in the front panel. The unit control elements are permanently computer controlled.
Simultaneous visualization in the PC of all parameters involved in the process.
Calibration of all sensors involved in the process.
Real time curves representation. All the actuators’ values can be changed at any time from the keyboard. Shield and filtered
signals to avoid external interferences.
Real time control with flexibility of modifications from the PC keyboard of the parameters, at any moment during the process.
Open control allowing modifications, at any moment and in real time, of parameters involved in the process.
3 safety levels: mechanical in the unit, electronic in the control interface, and the third one in the control software.

3. DAB. Data Acquisition Board:

PCI Express Data acquisition National Instruments board to be placed in a computer slot.
16 Analog inputs. Sampling rate up to: 250 KS/s. 2 Analog outputs. 24 Digital Inputs/Outputs.

4. PDDRC/CCSOF. Computer Control+Data Acquisition+Data Management Software:

Flexible, open and multicontrol software. Management, processing, comparison and storage of data.Sampling velocity up to 250 KS/s (kilo samples per second). It allows the registration of the alarms state and the graphic
representation in real time.

6. Manuals:

This unit is supplied with 8 manuals.
Dimensions (approx.) = Unit: 1300 x 1300 x 2100 mm. Weight: 135 Kg.
Control Interface Box: 490 x 330 x 310 mm. Weight: 10 Kg.