7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL Page 119
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D: Technical Reference
Maximum Process Temperature Chart
Flange Adapter versions of SITRANS LR250
.
Where the chart does not apply, please use your own judgement regarding the use of
SITRANS LR250.
See Minimum Internal Temperature (3.3.7.) on page 77 and Maximum Internal
Temperature (3.3.8.) on page 77 to monitor the Internal Temperature.
If the internal temperature exceeds the maximum allowable limit, a sun shield or a longer
nozzle may be required.
WARNING: Internal temperature must not exceed 80 °C (176 °F).
Notes:
• The chart below is for guidance only:
• The chart does not represent every possible process connection arrangement. For
example, it will NOT apply if you are mounting SITRANS LR250 directly on a metallic
vessel surface.
• The chart does not take into consideration heating from direct sunshine exposure.
process
temperature
Ambient Temperature (
o
C)
Process Temperature (
o
C)
Maximum Process Temperatures versus allowable ambient
ambient
temperature
process
temperature
internal enclosure
temperature
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