DIN EN 13799 pdf free download

DIN EN 13799 pdf free download. European Standard EN 13799 : 2002 has the status of a DIN Standard.
3Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 LPG mixture of light hydrocarbons, gaseous under standard atmospheric conditions, which can be liquefied by increased pressure or decreased temperature. The main components are propane, propene, butane and butene isomers 3.2 contents gauge device to indicate the liquid level or contents in a tank NOTE This can be incorporated into an overfill protection device. 3.2.1 float gauge device to indicate the content of a tank by means of a float on the liquid surface within the tank 3.2.2 rotary gauge device which operates through a rotating action in order to assess the liquid level in a tank by means of temporarily venting a limited amount of LPG, whereupon the change from liquid to vapour is detected fixed level gauge device to indicate when a predetermined liquid level in a tank has been reached or surpassed 3.2.4 slip tube device which operates through a linear action in order to assess the liquid level in a tank by means of temporarily venting a limited amount of LPG, where upon the change from liquid to vapour is detected 3.3 overfill protection device device that automatically stops the fling of liquid into the tank when a predetermined level has been reached 3.4 external tightness resistance to leakage through the gauge body to or from the atmosphere 3.5 internal tightness resistance to leakage across the gauge seat or other internal sealing components when the gauge is closed. 4 Operating conditions Contents gauges designed in accordance with this standard shall be suitable for the following conditions: -the minimum operating temperature to which the device is expected to be exposed during normal use is minus 20 °C. In service temperatures below this may be encountered during short periods, for example, when flling; 一 in some parts of Europe and for certain applications, lower minimum operating temperatures are necessary. Where the device is subject to more severe temperature conditions, the design temperature range shall be extended to minus 40 °C. When gauges are designed for a temperature lower than minus 20。C, they shall meet the requirements of annex B; -the maximum operating temperature to which the gauge is expected to be exposed during normal operation is 60 °C. In service, this temperature may be exceeded for short periods; – the maximum allowable pressure is 25 bar; the minimum pressure to which a gauge is normally exposed is zero bar gauge. Vacuum conditions on the gauge, arising from butane at low temperature or evacuation of the tank can expose the device to a vacuum of 50 mbar absolute. 5 Materials 5.1 General 5.1.1 All materials in contact with LPG shall be physically and chemically compatible with LPG under all the normal operating conditions for which the contents gauge is intended. 5.1.2 Materials for gauge components shall be selected to give adequate strength in service. Consideration shall also be given to other modes of failure such as atmospheric corrosion, brass dezincification, stress corrosion, impact or material failure. 5.1.3 Alternative materials to those listed in 5.2 are not precluded, providing they comply with a standard or specification that ensures control of chemical and physical properties, and quality appropriate to the end use. 5.2 Metallic materials 5.2.1 Metallic materials for gauges shall be steel, stainless steel, copper alloys, aluminium alloys, zinc alloys, or other suitable materials.DIN EN 13799  pdf download.