Rosemount 2240S, Reference Manual

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Reference Manual
300550EN, Rev AA
December 2010
3-3
Rosemount 2240S
Section 3. MST/WLS Installation
3.2 INSTALLATION
CONSIDERATIONS
Multiple Spot Temperature sensor (MST) and Water Level Sensor (WLS) must
be installed on the tank before installing the Rosemount 2240S Multi-input
Temperature Transmitter.
The MST/WLS is normally anchored to the bottom of the tank by attaching a
weight at the end of the tube. A tank expands when it is filled or warmed up,
causing the roof to move slightly upwards. The weight has a shackle which
allows the tube to follow the expansion, preventing it from breaking.
Multiple Spot Temperature Sensor (MST):
• Be careful with the flexible protection tube
• Temperature and Water Level Sensors should be located as far away
as possible from heating coils and mixers.
• In case the flexible tube is damaged, please contact Emerson Process
Management/Rosemount Tank Gauging .
• Do not attempt to fix or rebuild the temperature sensor since this may
cause serious malfunctions
Water Level Sensor:
• Handle the Water Level Sensor carefully
• Leave the sensor protection on until the final positioning in the tank