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Computer Controlled Series/Parallel Pumps Bench


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Unit designed to demonstrate the operational advantages of parallel or series operation, depending on the required duty.
This unit consists of two centrifugal pumps, a water tank and circulation pipes with valves at the inlet and outlet of the pumps, three pressure sensors and a flow sensor.
This unit is supplied with the EDIBON Computer Control System (SCADA), including: Control Interface Box + Data  Acquisition Board + Computer Control and Data Acquisition Software, for controlling the process and the parameters involved.
The centrifugal pumps can operate: alone, coupled in series or in parallel. A three-phase motor activates a pump with possibility of adjustment and measurement of the turn speed as well as of the transmitted mechanic torque.
The pumps are installed in a pipes system, which, as it is a closed circuit, avoids the permanent waste of water during the operation.
By the appropiate positioning of the valves it is possible to connect the pumps individually, in series or in parallel, depending on which test is going to be performed.




PBSPC. Unit:
Anodized aluminium structure.
Panels and main metallic elements in stainless steel.
Diagram in the front panel with similar distribution that the elements in the real unit

2 Centrifugal pumps :
Maximum flow: 120 l./min. Maximum height (approx.): 25 mwc (meter of water column).
One is a three-phase pump of 0.37 KW with continuous speed adjustment with inverter of
frequency/voltage and the other one is single-phase.
3 valves that allow connecting the pumps separately, in series or in parallel, by the appropiate
positioning of the valves and 2 regulating valves.
Torque measurement and speed measurement.
Discharge pressure sensor (0 to 2.5 bar).
Discharge pressure sensor (0 to 6 bar).
Admission pressure sensor (-1to 0 bar).
Flow sensor (0-150 l./min.).
By the previous sensors we can make measurement of the most representative
parameters of the pumps and their couplings (series/parallel):
Total impelled flow.
Admission and discharge pressure.
The speed of one pump is adjustable from the computer.
Water tank, capacity: 60 l.


PBSPC/CIB. Control Interface Box :
Control interface box with process diagram in the front panel and with the same distribution that the
different elements located in the unit, for an easy understanding by the student.
All sensors, with their respective signals, are properly manipulated for -10V. to +10V computer output.
Sensors connectors in the interface have different pines numbers (from 2 to 16), to avoid connection
errors. Single cable between the control interface box and computer.
The unit control elements are permanently computer controlled, without necessity of changes or
connections during the whole process test procedure. Simultaneously visualization in the computer
of all parameters involved int the process. Calibration of all sensors involved in the process.
Real time curves representation about system responses. Storage of all the process data and results
in a file. Graphic representation, in real time, of all the process/system responses.
All the actuators’ values can be changed at any time from the keyboard allowing the analysis
about curves and responses of the whole process. All the actuators and sensors values and their
responses are placed in only one computer screen.
Shield and filtered signals to avoid external interferences.
Real time computer control with flexibility of modifications from the computer keyboard of the
parameters, at any moment during the process. Real time computer control for pumps, compressors,
resistances, control valves, etc. Open control allowing modifications, at any time and in real time , of parameters involved in the process simultaneously.
Three safety levels, one mechanical in the unit, other electronic in control interface and the third one in the control software.
DAB. Data Acquisition Board:

  • PCI Data acquisition board (National Instruments) to be placed in a computer slot. Bus PCI.

Analog input:

  • Number of channels= 16 single-ended or 8 differential. Resolution=16 bits, 1 in 65536.
  • Sampling rate up to: 250 KS/s (Kilo samples per second).
  • Input range (V)= 10V. Data transfers=DMA, interrupts, programmed I/0. Number of DMA channels=6.

Analog output:

  • Number of channels=2. Resolution=16 bits, 1 in 65536. Max. output rate up to: 833 KS/s.
  • Output range(V)= 10 V. Data transfers=DMA, interrupts, programmed I/0.

Digital Input/Output:

  • Number of channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 1 MHz.
  • Timing: Counter/timers=2. Resolution: Counter/timers: 32 bits.


PBSPC/CCSOF. Computer Control+Data Acquisition+Data Management Software:
Compatible with actual Windows operating systems. Graphic and intuitive simulation of the process in screen. Compatible with the industry standards.
Registration and visualization of all process variables in an automatic and simultaneously way. Flexible, open and multicontrol software, developed with actual windows graphic systems, acting
simultaneously on all process parameters.
Management, processing, comparison and storage of data. Sampling velocity up to 250,000 data per second guaranteed. Student calibration system for all sensors involved in the process.
It allows the registration of the alarms state and the graphic representation in real time.
Comparative analysis of the obtained data, after to the process and modification of the conditions during the process.
Open software, allowing to the teacher to modify texts, instructions. Teacher’s and student’s passwords to facilitate the teacher’s control on the student, and allowing the access at different work levels.
This unit allows that 30 students of the classroom can visualize simultaneously all results and
manipulation of the unit, during the process, by using a projector.
Cables and Accessories, for normal operation.

This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Interface and Control Software, Starting-up, Safety, Maintenance, Calibration & Practices Manuals.