Laboratory Experiments > Three Tank System > Technical data

TTS20 Three-Tank-System

The Three-Tank-System consists of three plexiglass-cylinders which are serially interconnected by stop valves. The pumps1 and 2 suck distilled water from the basin, thus supplying the two cylinders on the left- and right-hand side of the set-up. The level of the liquid inside all three cylinders is supervised via process pressure transmitters. The basin and the three cylinders present a unit manufactured out of plexiglass.


Dimension Sizes and
Weight of the System:
  • Length : 1280 mm
  • Width : 350 mm
  • Height : 890 mm
  • Weight : 54 kg


Pumps:

  • Voltage : +12 V
  • Current consumption : 1.4 A
  • Pump performance : 7 l/min
  • Pressure : 1.4 bar

Sensors:

  • Range : 0 ... 100 mbar
  • Output signal : 0 ... 20 mA two-wire.
 

Actuator with signal adaption
 The amplifier, the mains supply unit and a signal adaption unit are contained inside of a 19’’-box. The box also contains the electrical disturbance unit: The 3 sensor signals can be disrupted by switches or scaled by potentiometers. The control signals for the pumps can be scaled via potentiometers.
Mains: (230 V, 50/60 Hz on request 110 V, 50/60 Hz)

Amplifier inputs :

  • Pump control signals: 0 ... +10 V

Amplifier outputs :

  • Voltages for the pumps: +12 V (PWM)

Inputs of the signal adaption unit :

  • 3 sensor signals, range: 0 ... 20 mA
  • 2 control signals for the pumps in the range: -10 ... +10 V

Outputs of the signal adaption unit :

  • Liquid levels of cylinders: ±10 V +9 V = 0 cm, -8.61V = 60 cm
  • 2 control signals for the pumps in the range: 0 ... +10 V

Controller (Option 20-02)
A/D-D/A-card and executable controller program for a PC with PCIe slot running with WINDOWS (for WINDOWS 7-10). The controller program provides a simple menu control (sampling period default 50 ms, adjustable in the range 1-54 ms).

Inputs :

  • 3 sensor signals: -10 ... +10 V at 14 Bit A/D-converter.

Outputs :

  • 2 control signals -10 ... +10 V from for the amplifier 14 Bit D/A- conv.

Program C-source (Option 20-03)
The controller program from Option 20-02 in C++ source with library functions for graphic output, controlling the sampling period as well as controlling the PC adapter card requires the Embarcadero C++ Builder V10.

Technical data are subject to change (Date 4-December-2017)