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Temperature regulation bench - flow - level


Service : 400 V, 50 Hz, 8 kw; Compressed air: 6 bar, 6 Nm3 / h
Clean water: 4 bar, 20 ° C, 2000 L / h
Computer for using the software
Dimensions : 1850 x 800 x 2010 mm

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Description :

The bench allows simple regulation of temperature, flow, level, temperature-flow and flow-rate cascade regulation and the study of hot / cold fluid control around a plate heat exchanger.

The level control can be realized with 2 types of sensor (hydrostatic or capacitive pressure).
Flow control can be performed with 2 types of actuator (control valve or variable speed pump).
The temperature regulation is carried out on a heat exchanger with the possibility of studying the delay effect.
The cascade control of temperature - flow is carried out on a tank filled with water in which a coil is immersed and water at controlled temperature circulates there
The level-flow cascade control is carried out on a column filled with water by action on a valve
The device is mounted on a welded stainless steel frame

Objectifs Pédagogiques :
  • Identification of sensors and actuators.
  • Simple regulation loop wiring and cascade.
  • Simple regulations of 1st order.
  • Cascade regulation.
Spécifications techniques :

It's made of :

  • A feed tray
  • A feed pump, stainless steel body,
  • A stainless steel coil located in the feed tank.
  • An electric stainless steel line heater
  • Brazed plate heat exchanger (water / water),
  • An altuglas column,
  • Two float flowmeters
  • A float flowmeter
  • A pallet flowmeter,
  • An electromagnetic flowmeter.
  • Two variable CV needle valves with pneumatic actuator,
  • Two Intensity / Pressure converters.
  • Temperature probes
  • A hydrostatic pressure sensor for measuring the water level,
  • A capacitive level sensor,
  • A hot circuit made of 304L stainless steel and a PVC cold circuit.
  • An electrical box, waterproof IP 55, including:
  • A lockable disconnector,
  • A power-on LED,
  • Emergency stop,
  • An Ascon master controller with input connection to either level measurements, temperature measurements or flow measurement with RS485 digital output,
  • An Ascon slave controller with input connection to RS485 digital output and output measurements,
  • A regulator for the preparation of the hot fluid,
  • An electronic speed variator,
  • A static relay power unit,
  • Secure plugs with 4-20 mA output to wire the inputs / outputs of the regulators,
  • The equipment comes with a technical documentation and TP proposal for the different control loops.
Options :
Option 1: 1 specific "heat exchange" software for the acquisition of temperatures and the calculation of the heat exchange efficiency, developed under Autolink with synoptic
. Plotting heat exchange curves
. Calculation of the efficiency of the exchanger

Option 2: Software acquisition and settings of 2 regulators composed of:
- 1 RS485 / RS232 converter
- 1 operating software under Windows allowing:
Reading PID parameters
The plot of the curves
The configuration of the remote controller
Archiving values
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