Endress+Hauser WirelessHART Fieldgate SWG70, Руководство по эксплуатации

Страница: 16 / 138

Installation WirelessHART Fieldgate SWG70
16 E Hauser
4 Installation
NOTICE!
• It is recommended that Fieldgate SWG70, adapters and devices be setup on the test bench
and the network be tested before the components are installed in the field.
4.1 Mounting considerations
4.1.1 Positioning the Fieldgate
Install the Fieldgate before installing other WirelessHART devices. This way you can check
for proper operation of new devices as they are installed. Nevertheless, consider the location
of future WirelessHART devices that will be routed through the Fieldgate to ensure good
connectivity.
Guidelines for Planning a
WirelessHART Network
• Mark the positions of the various measuring points on a scale overview of the plant. It is
important that the overview shows likely obstacles to the propagation of the radio waves.
• Make sure that a minimum of 2 other WirelessHART devices are well within the antenna
range of the device. If necessary, consider using an adapter as an additional stand-alone
repeater. Please refer to the following section for more information about the antenna
properties.
• Where a lot of metal, grids or walls prevent a device from being in line-of-sight of its
nearest neighbor, the maximum distance between two devices is 30 m. Install wireless
devices at least 1m above the ground or the floor.
• Where there are fewer structural elements and one or more neighbors are in direct line-
of- sight, the maximum distance between two devices for planning purposes is 200 m. In
this case, install wireless devices at least 3m above the ground or the floor.
• Consider moving objects that could affect the device's antenna range.
• Make sure that the device's antenna is aligned vertically.
• If possible, position the Fieldgate at or near the center of the network - it should be in
contact with at least 20% of the devices in the network.
• Do not position WirelessHART devices directly below or above each other as they will be
outside each other's antenna range. See Chapter 4.1.3 "Examples of good and poor
positioning" on page 18.
• If possible, do not position the device next to metal surfaces, pipes or walls containing
metal (minimum distance: 6 centimeters). There should be as little metal around the
device as possible.
• Do not position other 2.4 GHz devices like cordless phone bases or WLAN routers near
WirelessHART devices. Wireless technologies used in an industrial environment must be
able to coexist without disrupting each other. If multiple networks operate in one facility,
wireless frequency management may be required.