Temperature Control Trainer (Computer Controlled System) Apparatus

The process setup consists of heating tank fitted with thyristor-controlled heater for on line heating of the water. Water is supplied from laboratory constant head tank and its flow can be manipulated and measured by provided Rotameter. The temperature of the heated water is sensed by RTD sensor. This measured variable through Temperature Transmitter is communicated to Digital Indicating Controller. Error is calculated and output, accordingly, is communicated to Thyristor Controlled heater to achieve the Set Point. These units along with necessary piping are supported in a well-designed housing and are fixed on base plate.
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
Technical Detail:
Temperature Transmitter: Input RTD PT-100 (0-100C), output 4-20 mA.
Process tank: Material Stainless Steel,
Heater: Nichrome Wire Heater, Capacity 1 Kw
Thyristor Controller: Input 4-20mA for heater.
Flow Measurement: Rotameter.
Piping: Size 1/4
Interfacing unit: For input-output communication with auto/manual facility
Micro-processor Controller: PID Setting, auto tuning, fully programmable with serial communication.
Software: For experimentation, PID control, Data logging, trend plot, offline analysis and printing.