Definition of Recorder: A recorder is a measuring instrument that displays a time-varying signal in a form easy to examine, even after the original signal has ceased to exist. Recorders generally provide a graphic recod of variations in the … (Read More)

Strip Chart Recorder Working Principle: Strip Chart Recorder Working Principle are those in which data is recorded on a continuous roll of chart paper moving at a constant speed. The recorder records the variation of one of more variables with respect … (Read More)

Galvanometer Type Recorder: The D’Arsonval movement used in moving coil indicating instruments can also provide the movement in a Galvanometer Type Recorder. The D’Arsonval movement consists of a moving coil placed in a strong magnetic field, as shown in Fig. 12.2(a). In a … (Read More)

Null Type Recorder: These Null Type Recorder Working Principle of self-balancing or null conditions. When an input is given to the measuring circuit of the recorder from a sensor or transducer, it upsets the balance of the measuring circuit, producing an error … (Read More)

Circular Chart Recorder Working Principle: As the name implies, the data is recorded on a flat circular chart. The basic assembly of a single pen circular chart recorder is shown in Fig. 12.8. It consists of … (Read More)

XY Recorder Working: In most research fields, it is often convenient to plot the instantaneous relationship between two variables , rather than to plot each variable separately as a function of time. In such cases, the … (Read More)

Magnetic Tape Recorder Working Principle: The major advantage of using a Magnetic Tape Recorder Working Principle is that once the data is recorded, it can be replayed an almost indefinite number of times. The recording period may vary from a few minutes … (Read More)

Frequency Modulation Recording: When a more accurate response to dc voltages is required, an Frequency Modulation Recording system is generally used. In this FM system, the input signal is used to frequency modulate a carrier, i.e. the carrier signal is frequency … (Read More)

Digital Data Recording System: Digital magnetic tapes are often used as storage devices in digital data processing applications. Digital tape units are of two types, incremental and synchronous. Incremental digital recorders are commanded to step ahead (increment) for … (Read More)

Potentiometric Recorder Working Principle (Multipoint): The thermocouple or millivolt signal is amplified by a non-inverting MOSFET, chopper stabilized, feedback amplifier. This configuration has a very high input impedance and the current passing through the signal source … (Read More)

Digital Memory Waveform Recorder (DWR): The Digital Memory Waveform Recorder (DWR) shown in Fig. 12.18, provides capability which is difficult to achieve by other methods. The block diagram (Fig. 12.18) is of a unit capable of recording four independent signals simultaneously. The … (Read More)

Strip Chart Recorder Application: The following are some of the thousands of Strip Chart Recorder Application for recorders in industry. 1. Temperature Recording: A strip chart recorder may be used to provide a graphical record of temperature as a function of time. There … (Read More)