Process Control & Instrumentation Lab

PROCESS CONTROL AND INSTRUMENTATION LAB

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TIME CONSTANT OF MANOMETER PC-116

The present set-up is designed to study the characteristics of a U Tube manometer. It consists of a U Tube manometer, which is pressurized by air. A suitable and proper arrangement has done for charging and discharging the manometer fluid in the manometer. This arrangement facilitates to observe the response of different types of manometer fluids of different heights. An air pressure regulator is provided to change the pressure in the manometer. All components are assembled on a frame.

LEVEL CONTROL TRAINING SYSTEM PC-111

The trainer consist of a transparent tank fed from a storage tank with the help of a pump. The liquid level is measured using a pressure sensor. The sensor output signal is sent to a controller which according to the signal changes the sped of the pump and thus the flow rate. To investigate the influence of disturbance variables, an electromagnetic proportional valve in the tank outlet is activated by the controller. All the parameters are analyzed with the help of software provided with the set-up.

INTERACTING AND NON INTERACTING SYSTEM PC-118

The setup is designed to study dynamic response of single and multi capacity processes when connected in interacting and non-interacting mode. It is combined unit to study 1) Single capacity process. 2) Non interacting process and 3) Interacting process. The observed step response of the tank level in different mode can be compared with mathematically predicted response. Setup consists of supply tank, pump for water circulation, Rotameter for flow measurement, process tanks with scales, which can be connected to interacting and non-interacting mode. The components are assembled on frame to form tabletop set-up.

FLOW CONTROL TRAINING SYSTEM PC-112

A piping system with two flow meters is supplied with flow by a speed-controlled pump from the storage tank. The rotameter is used to measures the flow rate so that flow rate is observed during the time of operation. The flow rate is also measured by a turbine wheel flow sensor. The sensor output signal is sent to the controller. The output signal from the controller influences the setting of an electromagnetic proportional valve. To investigate the influence of disturbance variables, the pump speed is altered by way of the software provided with the set up through the controller.

TEMPERATURE CONTROL TRAINER PC-103

A metal bar, which is thermally insulated with cladding, is heated or cooled at one end by a Heating element. Three temperature transducers along the axis of the bar allow the variation in temperature along the length of the bar, and hence the associated thermal lags, is obtained for differing operating conditions. A dial-gauge thermometer offers the advantage that the temperature is read off directly at any time. The temperature is measured using a temperature sensor. The sensor output signal is sent to the software controller. The output signal from the controller influences the operating voltage of the Heating element and hence the heating capacity. A fan that dissipates part of the heating power is activated by the software to investigate the influence of disturbance variables

PRESSURE CONTROL TRAINER PC-113

The pressure tank is charged with compressed air by a diaphragm gas pump. The advantage of the dial-gauge manometer is that the pressure in the tank is observed directly at any time. The pressure is measured using a pressure sensor. The sensor output signal is sent to the software controller. The output signal from the controller influences the speed of the diaphragm gas pump and hence the flow rate. An air consumer is simulated by way of a flow control valve. A solenoid valve through which air can escape is activated by the software to investigate the influence of disturbance variables.

CALIBRATION OF THERMOCOUPLE & THERMOMETER PC-112

The setup consist of constant temperature bath with heating element. This heat source is controlled with the help of digital temperature controller at any preset valve. A thermocouple pocket is provided to insert the thermocouple in it. Three thermocouple i.e. CR/AL, Cu-constantan, Fe-constantan and digital milivolt meter are also provided. All components are assembled on a base plate to form a table top setup.

MEASUREMENT OF LEVEL BY CAPACITANCE METHOD PC-114

The present set-up is designed to study the working principle and calibration procedure of capacitance type level transmitter. The setup consist of a probe which is mounted in a level tank with graduated scale. Water is poured in the level tank manually and response of the level transmitter is indicated on the level Indicator. Output of the transmitter can be measured using digital current meter. A drain valve is provided at the bottom of the level tank which enables the student to observe and measure the response of capacitance type level transmitter at different liquid heights The setup is complete with level tank, level transmitter, current indicator and necessary piping. All component and accessories are properly mounted on the rigid MS structure and fitted on a base plate to from a table top set up.

CHARACTERSTIC P.I.D CONTROLLER PC-109

The present set-up is designed to study the characteristics of a PID controller. It consists of a stirred tank in which a heater is provided to heat the water. Water is supplied to the tank from laboratory overhead tank by the user. The flow rate can be adjusted by operating the needle valves provided on Rotameter. PID parameters can be changed for conducting experiment on P, PI, PD and PID mode. Controller can be operated on Auto Tune mode in which controller automatically fixes the value of P, I and D. Temperature is sensed by the PID Controller and the controller gives input to the heater, accordingly. Experiment can be performed on various flow rates and temperature set points.

CONTROL VALVE CHARACTERSTIC PC-108

The setup is specially designed for various experimental and demonstrative capabilities. The product consists of Pneumatic control valves of Linear and Equal % type. The Stainless Steel water tanks with pump are provided for continuous water circulation. The Rotameter is used for the flow measurement. The pressure at the valve inlet is measured with the help of manometer. The air regulator and pressure gauge is provided for regulating air supply. These units along with necessary piping and fitting are assembled in a painted MS Structure.