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Title: Recording Instruments
Author: A. G. Koenig
Source: 1945 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1945
Abstract: The recording instruments used by the gas industry are installed for the very definite purposes of what might be termed automatic evaluation of the quantity of gas being bought or sold. Of course, the records produced by these instruments are usually interpreted and evaluated in terms of standard cubic feet. The installation and maintenance of recording instruments are usually under the supervision of The Gas Measurement Department, and the care and operation of these instruments are usually the responsibility of the Field Meter Men, who usually lay out the proper installations and install the instruments so that reliable measurements are obtained. For this reason the Field Meter Men should not only be familiar with the practical and technical installation procedures, but should also be familiar with the general design and construction of the instruments. Since all manufacturers prepare and distribute complete instruction manuals and technical description of their instruments, it is up to the Meter Men to study and follow these instructions. This will not only save him trouble when any difficulty arises with the instrument, but should cause him to prevent troubles arising by properly servicing the instruments at periodic intervals. The most commonly used recording instruments in the gas industry are the Orifice Meter, Recording Pressure Gauges and Recording Thermometers. Probably the most important of these instruments is the Orifice Meter. and for this reason we will discuss it first. Since there are other papers being given on specific Orifice Meters we will limit this discussion of the Orifice Meter to its general theory, construction, and operation.

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