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Computer Controlled Multipump Testing Bench


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PBOC. Unit:
Unit designed to demonstrate the operating characteristics of a series of different types of pumps.
Anodized aluminium structure and panels in painted steel.
Main metallic elements in stainless steel.
Diagram in the front panel with similar distribution to the elements in the real unit.
PBOC/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 from -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 in 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 theparameters,
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 a 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. DMA channels=6.
Analog output: Channels=2. Resolution=16 bits, 1 in 65536. Maximum output rate up to: 833 KS/s.
Output range(V)= 10V. Data transfers=DMA, interrupts, programmed I/0.
Digital Input/Output: Channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 1 MHz.
Timing: Counter/timers=2. Resolution: Counter/timers: 32 bits.
PBOC/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 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 the 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.
Manuals: This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Interface and Control Software, Starting-up, Safety, Maintenance, Calibration & Practices Manuals.
Fully instrumented self-contained unit.
It is equipped with four rubber wheels to provide mobility and with brake to immobilize the unit during the practices.
4 Pumps (computer controlled): Centrifugal pump, Axial flow pump, Gear pump and Peripherical pump:
Centrifugal pump: pedestal or of free axis type, with a reinforced runner that works in an extension of the main head and held by a double ball bearing.
- Maximum flow: 50 l/min.
- Maximum height: 11 mwc (meters of water column).
- Efficiency: 35%.
Axial flow pump: with propeller, which works in an acrylic casing with thin interstices between the propeller and the casing.
- Maximum flow: 50 l/min.
- Maximum height: 2 mwc (meters of water column).
- Efficiency: 15%.
Gear pump: of positive displacement, with casing of a melted piece and two rotors in form of a straight cylindrical gear.
- Maximum flow: 35 l/min.
- Maximum height: 45 mwc (meters of water column).
- Efficiency: 75%.
Peripherical pump: also known as Regenerator or Turbine pump, with an runner of straight blades inside
an annular casing and an axis of activation on two lubricated ball bearings.
- Maximum flow: 40 l/min.
- Maximum height: 22 mwc (meters of water column).
- Efficiency: 30%.
Motor for each pump, with independent operating.
Admission pressure sensors and discharge pressure sensor for each pump (8 sensors).
Control software for the direct reading of speed (r.p.m.) and torque (Nm).
Variation of speed by frequency converter, computer control.
Calibrated volumetric tank.
Storage tank, with approx. capacity of 160 litres.
“U” Shape weir.
Transparent elements.
2 Stilling baffles in the open channel.
Level sensor.
Valves for centrifugal , peripherical and gear pumps. Control valve for axial pump.