51 For your safetyVEGAPULS WL 61 • Foundation Fieldbus47097-EN-170126For operation outside of closed vessels, the following conditions mustbe fulfilled:• The installation must be carried out by trained qualified personnel• The instrument must be stationary mounted and the antennadirected vertically downward• The mounting location must be at least 4 km away from radioastronomy stations, unless special permission was granted by theresponsible national approval authority• When installed within 4 to 40 km of a radio astronomy station,the instrument must not be mounted higher than 15 m above theground.You can find a list of the respective radio astronomy stations in chap-ter "Supplement".Bluetooth radio moduleThe radio module used in the instrument for wireless Bluetooth com-munication was tested by the manufacturer according to the latestedition of the following standard:• EN 300328 – Wideband transmission systemsIt is hence for use inside closed vessels in countries of the EU andEFTA.1.8 Restrictions for the USA and CanadaThe VEGAPULS WL 61 with wireless Bluetooth communication mustneither be operated in the USA or Canada nor imported or exported.1.9 Radio license for USA/CanadaThis approval is only valid for USA and Canada. Hence the followingtexts are only available in English/French language.The instrument is in conformity with part 15 of the FCC regulations.Operation is subject to the following two conditions:• this device may not cause harmful interference, and• this device must accept any interference received, including inter-ference that may cause undesired operation.• the antenna must be directed vertically downwardFCC requirements limit this device to be used only in a fixed instal-lation, never in a portable installation or in installations that are inmotion (i.e. cement trucks, etc.).Changes or modifications not expressly approved by the manufac-turer could void the user’s authority to operate the equipment.This device complies with Industry Canada license-exempt RSSstandard(s). Operation is subject to the following two conditions:• this device may not cause interference, and• this device must accept any interference, including interferencethat may cause undesired operation of the device