دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a measuring device installed on the outside of a tank to permit observation of the depth of the liquid inside.

n: a velocitymeasuring device in which gas flow is parallel to the rotor axis and the speed of rotation is proportional to the rate of flow.

n: 1. the pressure maintained on equipment or systems through which a fluid flows 2. in reference to engines, a term used to describe the resistance to the flowof exhaust gas through the exhaust pipe. 3. the operating pressure level measured downstream from a measuring device4.

n: the temperature-sensing (detecting) element of a temperature-measuring device.

n: a device for measuring gas throughput, usually installed in conjunction with the primary measuring device owned and operated by the party having the obligation to provide measurement services at a specific point on a pipeline system.

n: a pressuremeasuring device actuated by two or more pressure-sensitive elements that act in opposition to produce an indication of the difference between two pressures.

n: a bailing device with a release valve. usually of the disk or flapper type. used to place. or spot, material (such as cement slurry) at the bottom of the well. dump meter n: a liquid-measuring device consisting of a small tank with narrowed sections at top and bottom that automatically fills and empties itself and records the number of dumps.

a hollow tube with a flapper or other opening valve at the bottom, run on wireline to place cement or sand in a well.

n: the value of an AC current or voltage that produces the same heating effect as a direct current of the same amount;equal to 0.707 times the maximum value. Electrical measuring devices read effective values unless otherwise indicated. Also called RMS value.

n: a curve or graph that represents the error of a measuring device such as a pressure gauge as a function either of the quantity measured or of any other quantity that has an influence on the error.

radioactive measuring device.