Emerson Rosemount 5408 Quick Start Manual page 26

Quick Start Guide
The ambient temperature limits may be further restricted by the process
temperature as described by
Figure 11-1: Ambient Temperature vs. Process Temperature
-76
(-60)
A. Ambient temperature °F (°C)
B. Process temperature °F (°C)
Aside from ambient temperature variations, heat from the process may be
transferred to the transmitter housing. Being exposed to a high process
temperature without extra cooling for an extended period of time may
cause the electronics temperature to exceed the allowed limit and thereby
affect the transmitter's performance and reliability. The latter are potential
risks whenever a transmitter has shut down due to high electronics
temperature. The transmitter will warn about the electronics temperature
being out of limits.
26
Figure
A
176 (80)
104 (40)
-40 (-40)
11-1.
248
(120)
Rosemount 5408 Level Transmitter
February 2020
B
482
(250)