Emerson Rosemount 248 Reference Manual page 26

Installation
April 2024
Figure 3-1: Field Communicator Connection
3.2.1 Mechanical
Location
When choosing an installation location and position, consider the need for access to the
mesh network, access to the transmitter, and to the power module compartment for ease
of power module replacement.
Electronics cover
The electronics cover is tightened so that polymer contacts polymer. When removing
the electronics cover, ensure that there is no damage done to the O-ring. If damaged,
Emerson recommends replacing it with a Rosemount O-ring. Reattach cover. Ensure
polymer contacts polymer (i.e. no O-ring visible).
3.2.2 Electrical
Power module
The transmitter is self-powered. The power module contains a primary lithium-thionyl
chloride battery (Green Power Module, model number 701PGNKF). Each battery contains
approximately 5 grams of lithium. Under normal conditions, the battery materials are
self-contained and are not reactive as long as the battery and the power module are
maintained.
CAUTION
Use caution when handling the power module. It may be damaged if dropped from heights
in excess of 20 feet.
Battery hazards remain when cells are discharged.
NOTICE
Care must be taken to prevent thermal, electrical, or mechanical damage. Contacts must
be protected to prevent premature discharge.
Power modules must be stored in a clean and dry area. For maximum power module life,
storage temperature must not exceed 86 °F (30 °C).
Sensor
Make sensor connections with the threaded 1½-in. NPT connection sensor adapter.
26
Reference Manual
00809-0100-4248
Emerson.com/Rosemount