Regulation of level and flow rate by PID

Educational objectives
• Putting an electrical installation into service.
• Learning about and using a PID regulator, a hydrostatic sensor, and a 4-20mA flowmeter.
• Using a regulation system for water level and flow rate by analogue signal 4-20mA.
• Using and configuring a speed variator locally and from programming software.
• Measuring, analysing and interpreting analogue signals.
• Learning industrial maintenance.

Composition
Frame made of matt anodized aluminium mounted on four casters, two with brakes.
Easy to move and very stable.
• A bottom tank of 100L.
• One top tank of 60L with 2 transparent sides.
  One tape rule on one side for monitoring the water level.
  One inner wall of the tank for preventing eddies.
• One three-phase motor pump 230V/400V with a power of 750W.
• One rotary valve for manually adjusting the water flow rate at the pump outlet.
• One rotary valve for adjusting the water leak level at the tank outlet.
• One ¼ turn valve for rapid draining of the tank.
• One 4-20mA flowmeter with integrated digital display.
  Pushbuttons on the front of the sensor enable its programming.
• One hydrostatic pressure sensor 4-20mA directly mounted on the tank wall.
  Measuring range 0-600mm.
• One electrical console composed of:
  1 thermal-magnetic circuit-breaker - 1 emergency stop button - 1 main On/Off button
  1 speed variator 3x230V.
  1 PID regulator 4-20mA with integrated programming console and large display
  2 230V sockets with indicator light
  1 set of safety terminals for selecting the type of regulation to be studied
  1 set of safety terminals for measuring analogue currents
• Melamine shelf with dimensions 1000 x 400 mm.