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Inches of water is a non-SI unit for pressure.It is also given as inches of water gauge (iwg or in.w.g.), inches water column (inch wc, in. WC, " wc, etc. or just wc or WC), inAq, Aq, or inH 2 O.
A centimetre of water [1] is a unit of pressure. It may be defined as the pressure exerted by a column of water of 1 cm in height at 4 °C (temperature of maximum density) at the standard acceleration of gravity, so that 1 cmH 2 O (4°C) = 999.9720 kg/m 3 × 9.80665 m/s 2 × 1 cm = 98.063754138 Pa ≈ 98.0638 Pa, but conventionally a nominal maximum water density of 1000 kg/m 3 is used, giving ...
The abbreviation "W.C." or the words "water column" are often printed on gauges and measurements that use water for the manometer. See also: Mercury pressure gauge Fluid density and local gravity can vary from one reading to another depending on local factors, so the height of a fluid column does not define pressure precisely.
HPGAG – high-pressure gauge; HPHT – high-pressure high-temperature; HPPS – HP pressure log [clarification needed] HPU – hydraulic power unit; HPWBM – high-performance water-based mud; HRCC – HCAl of caliper (in inches) HRLA – high-resolution laterolog array (resistivity logging tool) HRF – hyperbaric rescue facility/vessel
Tire-pressure gauge; V. Vacuum gauge This page was last edited on 13 July 2023, at 18:52 (UTC). Text is available under the Creative Commons Attribution ...
Technical standards exist to provide glossaries of abbreviations, acronyms, and symbols that may be found on engineering drawings. Many corporations have such standards, which define some terms and symbols specific to them; on the national and international level, ASME standard Y14.38 [ 1 ] is one of the standards.