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Loose tomatoes for sale at a UK greengrocer in 2013, dual-priced in imperial (£0.99 /lb) and metric (£2.18 /kg) units. Signs like these do not comply with legislation, as metric prices must not be less prominent. [1] [2] Metrication is the act or process of converting to the metric system of measurement.
It is used in some Commonwealth countries, and until 1976 was defined as the volume of water at 62 °F (16.67 °C) [5] [6] whose mass is 10 pounds (4.5359237 kg). There are four imperial quarts in a gallon, two imperial pints in a quart, and 20 imperial fluid ounces in an imperial pint [ 4 ] , making an imperial fluid ounce 1 / 160 of ...
When converting oil density to specific gravity using the above definition, it is important to use the correct density of water, according to the standard conditions used when the measurement was made. The official density of water at 60 °F according to the 2008 edition of ASTM D1250 is 999.016 kg/m 3. [2] The 1980 value is 999.012 kg/m 3. [3]
Moisture content measurements can be reported in multiple units, such as: parts per million, pounds of water per million standard cubic feet of gas, mass of water vapor per unit volume or mass of water vapor per unit mass of dry gas.
For gas metering, gas orifice meters and ultrasonic flow meters are most common. [34] Coriolis meters are in use for liquid measurements, but can also take gas measurement applications. [35] For the application of allocation measurements, multiphase flow meters have been adopted, especially for subsea production systems. These equipments are ...
The calorie is defined as the amount of thermal energy necessary to raise the temperature of one gram of water by 1 Celsius degree, from a temperature of 14.5 °C, at a pressure of 1 atm. For thermochemistry a calorie of 4.184 J is used, but other calories have also been defined, such as the International Steam Table calorie of 4.1868 J .
The Winchester measure was made obsolete in the British Empire but remained in use in the US. [c] The Winchester bushel was replaced with an imperial bushel of eight imperial gallons. The subdivisions of the bushel were maintained. As with US dry measures, the imperial system divides the bushel into 4 pecks, 8 gallons, 32 quarts or 64 pints.
Yet other definitions are in use for industrial gas, [5] where, in the US, a standard cubic foot for industrial gas use is defined at 70 °F (21.1 °C) and 14.696 psia (101.325 kPa), while in Canada, a standard cubic meter for industrial gas use is defined at 15 °C (59 °F) and 101.325 kPa (14.696 psia).