Show related SlideShares at end. WordPress Shortcode. Share Email. Top clipped slide. Download Now Download Download to read offline. Basics Of Instrumentation Aug. Basics Of Instrumentation. Vinoth Ganesh Follow. Unit V. Paper Making Process by Nirjhar.
Reil summer training prenestition. Instrumentation limited sumeer training report. Indian Paper Industry. Valves used in industry. Dcs operator training. Related Books Free with a 30 day trial from Scribd. Uncommon Carriers John McPhee. The Art of War Sun Tsu. Related Audiobooks Free with a 30 day trial from Scribd. Elizabeth Howell. Basics Of Instrumentation 1. What is Instrumentation? Eg: DP Transmitter 4. It shall comprises the whole chain from Primary element to Correcting Element.
The controller input receives information about the status of the process variable and then provides an appropriate output signal MV-manipulated variable to the final control element eg-valves etc. Level of a tank, temp of furnace, position of furnace or a valve, flow of a fluid, etc which are to be satisfied before operating starting, stopping, opening ,closing ,etc of any instrument or equipment. A belt conveyor consists of two or more pulleys, with a continuous loop of material - the conveyor belt - that rotates about them.
One or both of the pulleys are powered, moving the belt and the material on the belt forward. The powered pulley is called the drive pulley while the unpowered pulley is called the idler. A belweigher or belt weigher is a piece of industrial control equipment used to gauge the mass or flow rate of material travelling over a conveyor belt.
In measurements a gauge is used to record the pressure difference between the system and the atmospheric pressure. The temperature of o K 20o C is also used. Open Tank Closed Tank RF Capacitance Conductive Type Hydrostatic Head Variable Area Meters Mechanical Flowmeters Electronic Flowmeters Vortex Flowmeters Ultrasonic Flowmeters The junction of two dissimilar metals creates a small voltage output proportional to temperature!
What is a Thermocouple? Temperature Sensors Thermocouples Temperature Sensors Comparison Control Valve Types The positioner translates this to a required valve position and supplies the valve actuator with the required air pressure to move the valve to the correct position.
The entire system of controllers are connected by a network for communication and monitoring. The processor receives information from input modules and sends information to output modules.
The input modules receive information from input instruments in the process a. Buses also connect the distributed controllers with the central controller and finally to the Human-Machine Interface HMI or control consoles. In order to facilitate interaction, separate computer is provided, normally taking form of a standard PC. Through this external computer, operator can re-program PLC, provide set-points and view trends of process variables that are controlled and manipulated by PLC.
It reads input signals, executes control program and communicates results decisions of control program as action signals to the outputs. This unit powers the processor and the circuits in the input and output modules.
Barometric Atm. P1 P2. Pressure Measurement. Capacitance Type n Consists of two conductive plates, dielectric, and diaphragm. Flow rate and flow quantity of materials is made primarily for determining the proportions of materials introduced to the process. It determine the behavior of the fluid.
Flow Measurement Flow Types: n When the average velocity is slow, the flow is called laminar, i. A: cross sectional area of the glass g: gravitational acceleration constant h: the height of the float. Variable Area Flow Meter Out. Level Measurement Float n special material designed to follow the level or the interface level of a tank n The specialty is the density of the float shall be always touching the desired measurement level.
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