various recorders

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Presentation Description

x-y recorders, analog recorders,digital recorders etc

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Presentation Transcript

Various Recorders : 

Various Recorders Kawantwala Taher (08EC075) Vyas Umang (08EC073)

What is recorder? : 

What is recorder? A recorder records electrical & non-electrical quantities as a function of time. This record may be written or printed, and later on, can be examined and analyzed to obtain a better understanding and control of the processes

Basic elements : 

Basic elements Paper chart – to record information Stylus- writing instrument Interfacing apparatus

Types of Recorders : 

Types of Recorders

Graphic Recorders : 

Graphic Recorders Display and store a pen-and-ink record of the history of some physical event. i) Strip Chart Recorders ii) X-Y Recorders

Graphic Recorders : 

Graphic Recorders Instrument records one or more parameters that change with respect to time. Self balancing or galvanometer One or more parameters with respect to some other- XY recorder

Strip Chart type : 

Strip Chart type Signal conditioning to drive chart at desired rate Drives reversible motor Event marker to mark edges of chart

Strip chart recorder : 

Strip chart recorder

Strip chart recorder : 

Strip chart recorder

chart recorder : 

chart recorder Circular motion, need special paper

chart recorder : 

chart recorder

meters : 

meters Mechanical Moving coil Moving iron Electromagnetic Induction meters Electrostatic

Galvanometer type : 

Galvanometer type Galvanometer recorder are uses d’Arsonval’s movement But not sensitive Cost and size advantages

Galvanometer type : 

Galvanometer type

X-y recorders : 

X-y recorders Relationship between two variables pen moves in two axes Pen clamped or by creating diff. Pressure to hold pen Expensive Gives time base generator

X-y recorders : 

X-y recorders

X-y recorders : 

X-y recorders

X-y recorders : 

X-y recorders

Oscillographic : 

Oscillographic X, Y, inputs Multiple channels Time base X, Y, display Single ended inputs Differential inputs

Magnetic tape recording : 

Magnetic tape recording High frequencies High resolution (fidelity) Magnetic modulation of data Requires complicated recording devices Can be used with strip chart recorders