IES-ESE (Engineering Services) Electronics Electronic Measurements and Instrumentation-Different Types of Transducers and Displays Study Material (Page 2 of 2)

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Recorder

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Introduction

Recorder is a device which is used to draw a graph between electrical or non-electrical quantity with respect to time by using pen in the graph.

Types of Recorders

  • Analogue recorders
  • Digital recorders

Analogue recorders are further sub-divided into three types:

  • Graphic Recorder
    • Circular chart recorder
    • X-Y recorder
    • Strip-chart recorder
  • Oscillographic Recorder
  • Magnetic- Tape Recorder
    • FM Recorder
    • Direct recorder
    • Pulse modulation recorder

X-Y Recorder

Introduction

  • X-Y recorder is used to record the variation between two physical quantities.
  • We can measure the voltage, current, frequency and power factor by using X-Y recorder.

Construction & Operati…

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Graphic Level Recorder, Magnetic Tape Recorders

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Graphic Level Recorder

If the sound level meter has a logarithmic DC output facility, common graphic recorders can be used to obtain a permanent record of the evolution of the sound level, providing that their writing speed is compatible with the SLOW or FAST characteristics of the SLM.

If there is no DC output or if this output is not proportional to the dB level but only to the RMS pressure, then a…

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