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Title: Electronic Vs-- Mechanical Correcting Devices
Author: Ronald J. Hairston
Source: 1985 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1985
Abstract: For 60 years, mechanical devices have been providing a means for correcting measured gas volume to base conditions of pressure and temperature. Their origin can be traced back to the 1920s when chart recorders were used to record line pressure at the gas meter. These charts would then be read to determine average line pressure so that the volume measured by the gas meter could be corrected to base conditions of pressure. Today, mechanical chart recorders are still used for volume correction. They may record any combination of metered volume, line pressure, or line temperature.

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