DESCRIPTION:
The setup consists of a process tank in which compressed air enters through a Pneumatic control valve. The pressure transmitter is fitted on the process tank. The air pressure in process tank is sensed by the transmitter and communicated to the digital indicating controller. This measured variable is compared with the Set Point by controller and output is generated and given to I/P converter, which in turn supply the 3- 15 Psig pressure to vary the opening of the Pneumatic control valve to eliminate the error observed. As the opening of pneumatic control valve varies, the pressure in the Process Tank gets affected. This process goes on until the Set Point target is achieved.
EXPERIMENTATION:
To study the open loop or manual control
To study the proportional control
To study the two mode (P+I) control
To study the two mode (P+D) control
To study the three mode (PID) control
To study the tuning of controller (Open loop method) using Zeigler-Nichols method.
To study the stability of the system using the BODE PLOT.
Auto Tuning
UTILITIES REQUIRED:
Compressed Air Supply: 1 CMH at 6 BAR.
Electricity supply: 1 Phase, 220 VAC.
TECHNICAL DETAILS:
Pressure Transmitter Range 0-5 bar, type strain gauge, output 4-20 mA.
Process Tank Material Stainless Steel, Capacity 1.5 Ltrs. Powder Coated.
Control Valve Compatible capacity with Pneumatic Actuator.
I/P converter Input 4-20mA, Output 3-15 PSIG.
Pressure Regulator 0-2 kg/cm².
Pressure Gauge Bourdon type, 0-2 kg/cm² , 0-7 kg/cm².
Piping PU Piping.
Interfacing unit For input-output communication with auto/manual facility
Instruction Manual An ENGLISH instruction manual will be provided along with the Apparatus
The whole unit is assembled rigidly on a base plate.
|
