Telemetry Principles Zankhana Mehta block diagram of telemetry
Telemetry Principles Zankhana Mehta
block diagram of telemetry system
Types of Telemetry System • According to Energy Medium § Pneumatic, § Hydraulic • According to Electrical § Current, Voltage § Pulse • According to Signal Type § Analog, § Digital
Pneumatic Telemetry
Advantages • High effectiveness • High durability and reliability • Simple design • High adaptability to harsh environment • Safety • Easy selection of speed and pressure • Environmental friendly
Disadvantages • Relatively low accuracy • Low loading • Processing required before use • Uneven moving speed • Noise
Hydraulic Telemetry
Advantages ØIt gives more power than pneumatic systems. ØIts reliable to operate.
Disadvantages ØSlower motion than pneumatic. ØComplex construction. ØLeakage of oil problem ØMore maintenance than pneumatics Ø
Current telemetry
Current telemetry
Voltage Telemetry
Pulse Telemetry
Pulse Modulation
According to Signal Type • Analog Telemetry System: If the information in the form of current, voltage, Possion, frequency than the system is called analog system
According to Signal Type. . • Digital Telemetry System: If the information is transmited in the form of pulses than the system is called Digital telemetry system
Compare the merits and demerits of Hydraulic, Pneumatic and Electric Telemetry
Compare the merits and demerits of Hydraulic, Pneumatic and Electric Telemetry…. .
Standard output ranges of all types of telemetry systems • Current : 4 -20 m. A • Voltage : 0 -24 V • Pressure : 3 -15 psi
Thank You!!!!
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