Siemens Sitrans LR200, Quick Start Manual, Page: 23 / 276

Page EN-22 SITRANS LR200 (HART) – QUICK START MANUAL 7ML19985XC81
mmmmm
English
Maintenance
SITRANS LR200 requires no maintenance or cleaning under normal operating conditions. If
cleaning becomes necessary under severe operating conditions:
1.
Note the antenna material and the process medium, and select a cleaning solution that
will not react adversely with either.
2. Remove the device from service and wipe the antenna clean using a cloth and suitable
cleaning solution.
Unit Repair and Excluded Liability
For detailed information, please see the inside back cover.
Maximum Process Temperature Chart
Maximum Flange and Process Temperatures versus allowable ambient
for flange adapter versions of SITRANS LR200
• The chart is for guidance only.
• It does not represent every
possible process connection
arrangement. For example, it will
NOT apply if SITRANS LR200 is
mounted directly on a metallic
vessel surface.
• It does not take into consideration
heating from direct sunshine
exposure.
• You can use parameter 3.14.1 to
monitor the current internal temperature.
Loop power
Typical connection drawing
WARNING: Internal temperature must not exceed 80 °C (176 °F).
Note
: Loop voltage is the voltage at the
terminals of the power supply (not the
voltage at the terminals of the device).
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
process
tempera-
ture
Amb
ient
T
empe
rat
ur
e
(
o
C)
Process Flange Surface Temperature (
o
C)
PP rod
temperature
(no flange)
flange
tempera-
ture
+
-
LR200
loop resistance
RL
loop current IL
loop
voltage
VL
power
supply