
Manual Supplement
00809-1800-4530, Rev AB
Rosemount™ 5300 Level Transmitter
Single Probes with Cold Temperature
Option Code BR5
July 2020

Manual Supplement July 2020
Contents
Safety messages...........................................................................................................................3
About the cold temperature option code BR5.............................................................................. 4
Perform Trim Near Zone...............................................................................................................7
Surface threshold for option code BR5......................................................................................... 9
Surface threshold for option code BR5 in combination with High Level Supervision....................11
2 Rosemount 5300 Level Transmitter

July 2020 Manual Supplement
1 Safety messages
WARNING
Failure to follow safe installation and servicing guidelines could result in
death or serious injury.
• Only qualified personnel should install the equipment.
• Use the equipment only as specified in this guide and the Reference
Manual. Refer to the Rosemount 5300 Level Transmitter Reference
Manual for more instruction.
Explosions could result in death or serious injury.
• Installation of device in an explosive environment must be in accordance
with appropriate local, national, and international standards, codes, and
practices.
• Ensure device is installed in accordance with intrinsically safe or non-
incendive field practices.
Electrical shock could cause death or serious injury.
• Avoid contact with the leads and terminals. High voltage that may be
present on leads can cause electrical shock.
• Ensure the mains power to the transmitter is off and the lines to any
other external power source are disconnected or not powered while
wiring the transmitter.
Process leaks could result in death or serious injury.
• Handle the transmitter carefully.
• If the process seal is damaged, gas could escape from the tank when
removing the transmitter head from the probe.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or
misconfiguration of end users’ equipment. This could be intentional or
unintentional and needs to be protected against.
Physical security is an important part of any security program and
fundamental to protecting your system. Restrict physical access by
unauthorized personnel to protect end users’ assets. This is true for all
systems used within the facility.
Manual Supplement 3

Manual Supplement July 2020
2 About the cold temperature option code BR5
The Rosemount 5300 Level Transmitter with option code BR5 has been
factory configured for best performance in cold ambient temperature, down
to -67 °F (-55 °C).
This document describes option code BR5 factory settings and required
commissioning, for Rosemount 5300 with single probes.
For general Rosemount 5300 information, refer to the Rosemount 5300
Level Transmitter Product Data Sheet.
High Level Supervision (HLS)
Specific instructions for HLS in combination with option code BR5 are
described in this document. For general HLS information and instructions,
refer to the High Level Supervision Manual Supplement.
2.1 Required commissioning
The Trim Near Zone function shall be performed during commissioning, see
section Perform Trim Near Zone for further instructions.
2.2 Specification
Rosemount 5300 option code BR5 specification is listed in Table 2-1.
Table 2-1: Rosemount 5300 Option Code BR5 Specification
Option code BR5
Firmware version Requires version 2.M0 or later
Surface threshold factory settings • Surface threshold for option code BR5 -
Ambient temperature range during
operation for HLS
Start-up time See Start-up sequence
(1) Requires calibration performed within proper ambient temperature range, see
High Level Supervision Manual Supplement.
4 Rosemount 5300 Level Transmitter
factory settings
• Surface threshold for option code BR5 in
combination with HLS - factory settings
-67 °F to 158 °F (-55 °C to +70 °C)
(1)

July 2020 Manual Supplement
2.3 Start-up sequence
The Rosemount 5300 start-up time is normally <40 s. However for devices
with option code BR5 at temperatures below -40 °F (-40 °C), the start-up
sequence is delayed for five minutes with an undefined current value. Refer
to Figure 2-1 and Figure 2-2.
Figure 2-1: Start-Up Sequence, Alarm Mode High
A. Current, mA
B. Time, s
C. High Alarm current (Rosemount or Namur value, according to
configuration)
D. Actual level value
E. Low Alarm current (Rosemount or Namur value, according to
configuration)
F. For option code BR5 at temperatures below -40 °F (-40 °C): Five minutes
delay with an undefined current value
Manual Supplement 5