Siemens SITRANS LR200 Kurzanleitung Seite 22

Maximum Process Temperature Chart
WARNING: Internal temperature must not exceed 80 °C (176 °F).
Note: If the internal temperature exceeds the maximum allowable limit, a sun shield or
a longer nozzle may be required.
Maximum Flange and Process Temperatures versus allowable ambient
for flange adapter versions of SITRANS LR200
90
80
70
60
50
40
30
20
10
0
0 10 20 30
• The chart is for guidance only and does not represent every possible process connection
arrangement. For example, it will not apply if the LR200 is mounted on a nozzle greater
than 8" nominal, or directly on a metallic vessel surface.
• It does not take into consideration heating from direct sunshine exposure.
• To view peak recorded temperatures, go to Diagnostics (3.) > Measured Values (3.3) >
Min. Intern. Temp (3.3.7) or Max. Intern. Temp. (3.3.8); or open the menu View – Peak
Values and click on the temperature tab.
Loop power
Typical connection drawing
: Loop voltage is the voltage at the
Note
terminals of the power supply (not the
voltage at the terminals of the device).
1)
UHMW-PE antennas are rated to a maximum of 80 °C (176 °F) of continuous duty. However, they can be
used for periods of up to 3 hours at temperatures up to 120 °C (248 °F) at 1 bar pressure.
7ML19985XD81 SITRANS LR200 (PROFIBUS PA) – QUICK START MANUAL
max. process
temperature
for PP or
UHMW-PE
rod
40 50 60 70 80
Process Flange Surface Temperature (
max. flange max. process
temperature temperature for
for PTFE rod PTFE rod or SS
or SS horn
90 100 110 120 130
o
C)
1)
- loop resistance
RL
loop
power
voltage
supply
VL
loop current IL
+
horn
140 150 160
LR200
Page EN-21