User's Manual

iv
Reference Manual
00809-0300-4248, Rev AA
Failure to follow these installation guidelines could result in death or serious injury:
 Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury:
 Installation of this transmitter in an explosive environment must be in accordance with
the appropriate local, national, and international standards, codes, and practices.
Please review the approvals section of the 248 reference manual for any restrictions
associated with a safe installation.
 Before connecting a Field Communicator in an explosive atmosphere, ensure the
instruments are installed in accordance with intrinsically safe or non-incendive field
wiring practices.
 Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Process leaks may cause harm or result in death.
 Do not remove the thermowell while in operation.
 Install and tighten thermowells and sensors before applying pressure.
Electrical shock can result in death or serious injury.
 Avoid contact with the leads and terminals. High voltage that may be present on leads
can cause electrical shock.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:
 This device may not cause harmful interference.
 This device must accept any interference received, including interference that may
cause undesired operation.
 This device must be installed to ensure a minimum antenna separation distance of 20
cm from all persons.
The Power Module may be replaced in a hazardous area. The Power Module has surface
resistivity greater than one gigaohm and must be properly installed in the wireless device
enclosure. Care must be taken during transportation to and from the point of installation to
prevent electrostatic charge build-up.
NOTICE
The Rosemount 248 Wireless and all other wireless devices should be installed only after the
Smart Wireless Gateway has been installed and is functioning properly. Wireless devices
should also be powered up in order of proximity from the Smart Wireless Gateway,
beginning with the closest. This will result in a simpler and faster network installation.