a recorder records electrical & non-electrical quantities as a function of time. this record...
TRANSCRIPT
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Department of Electronics
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RECORDERS
Presentaion On
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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
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BASIC ELEMENTS
Paper chart – to record information
Stylus- writing instrument
Interfacing apparatus
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TYPES OF RECORDERS
Recorders
Analog
Graphic recorders
Oscillographic
recorders
Magnetic tape
recorders
Digital
Digital Tape recorders
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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
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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
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STRIP CHART TYPE
Signal conditioning to drive chart at desired rate
Drives reversible motor
Event marker to mark edges of chart
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STRIP CHART RECORDER
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STRIP CHART RECORDER
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CHART RECORDER
Circular motion, need special paper
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CHART RECORDER
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METERS
Mechanical
Moving coil
Moving iron
Electromagnetic
Induction meters
Electrostatic
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GALVANOMETER TYPE
Galvanometer recorder are uses d’Arsonval’s
movement
But not sensitive
Cost and size advantages
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GALVANOMETER TYPE
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X-Y RECORDERS
A X-Y recorder is an instrument which
gives a graphic record of the relationship
between two variables
Pen moves in two axes
Pen clamped or by creating diff. Pressure to hold
pen
Expensive
Gives time base generator
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X-Y RECORDERS
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X-Y RECORDERS
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X-Y RECORDERS
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OSCILLOGRAPHIC
X, Y, inputs
Multiple channels
Time base
X, Y, display
Single ended inputs
Differential inputs
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MAGNETIC TAPE RECORDING High frequencies
High resolution (fidelity)
Magnetic modulation of
data
Requires complicated
recording devices
Can be used with strip
chart recorders
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PRESENTED BY Suraj giripunje Rohit Gadpayle Shreyas Mendule
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