A "'chart recorder "'is an electromechanical device that records an electrical or mechanical input trend onto a piece of paper ( the chart ).
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Industrial strip-chart recorders may have two-speed gear trains that allow a higher speed to be used for initial adjustments of a process or to follow process upsets.
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Instead of a chart recorder, continuous records of oxygen consumption and or carbon dioxide production are made with the assistance of an analog to digital converter coupled to a computer.
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The software functions like a traditional multi-channel chart recorder, Igor Pro ) and specialist analysis functions ( for specific research areas such as spirometry and ventricular pressure ).
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The first product was introduced in 1977 with the test & measurement department of Neutrik developing the AudioTracer frequency response chart recorder, followed in 1983 by the modular AudioGraph series.
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The first chart recorder for environmental monitoring was designed by American inventor J . C . Stevens while working for Leupold & Stevens in Portland, Oregon and was issued a patent for this design in 1915.
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Puthoff states that after about a five-second delay, Swann said he responded, " is that an effect ? " Then according to Heberd, Swann crossed the room taking his attention away from the chart recorder.
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Previously a chart recorder and more recently a data logger or personal computer records the detector output as a function of time so that each sample output appears as a peak whose height depends on the analyte level in the sample.
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Chart recorders may be entirely mechanical with clockwork mechanisms, electro-mechanical with an electrical clockwork mechanism for driving the chart ( with mechanical or pressure inputs ), or entirely electronic with no mechanical components at all ( a virtual chart recorder ).
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Chart recorders may be entirely mechanical with clockwork mechanisms, electro-mechanical with an electrical clockwork mechanism for driving the chart ( with mechanical or pressure inputs ), or entirely electronic with no mechanical components at all ( a virtual chart recorder ).
