Emerson Rosemount 2051 Wireless Series, Reference Manual, Page: 129 / 250

6
Reference Manual
00809-0100-4100, Rev AA
Section 1: Introduction
June 2012
Introduction
also be approximately 1 m (3 ft.) from any large structure, building, or conductive surface to
allow for clear communication to other devices. Refer to best practices for additional
information on optimal mounting locations of device.
Recommended practices
When mounting the device, recommended practices should be considered to achieve the best
wireless performance. See
Appendix X for more information on recommended practices.
1.5.2 Mechanical
Location
When choosing an installation location and position, take into account access to the power
module compartment for easy 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 replace before
reattaching cover, ensuring polymer contacts polymer.
1.5.3 Electrical
Power Module
The Rosemount 3051 Wireless Pressure Transmitter is self-powered. The power module
contains one "D" size primary lithium/thionyl chloride battery (Green Power Module, model
number 701PGNKF). Each battery contains approximately 5.0 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. Care should be taken to prevent thermal, electrical, or
mechanical damage. Contacts should be protected to prevent premature discharge.
Use caution when handling the power module, it may be damaged if dropped from heights in
excess of 6.10 m (20 ft).
1.5.4 Environmental
Verify that the operating atmosphere of the transmitter is consistent with the appropriate
hazardous locations certifications.
Temperature Effects
The transmitter will operate within specifications for ambient temperatures between -40 and 85
°C (-40 and 185 °F).
Heat from the process is transferred to the transmitter housing. If the process temperature is
high, the ambient temperature will need to be lower to account for heat transferred to the
transmitter housing. See
Table 1-1 on page 1-7 for process temperature derating.