Siemens Sitrans Manual De Usuario
7ML19985GE01
SITRANS LC 500 – INSTRUCTION MANUAL
Page 21
mmm
mm
Inst
allat
ion
allat
ion
Mounting Instructions
The SITRANS LC 500 is easily installed: simply mount the instrument on the process
connection of the vessel.
connection of the vessel.
Protection for solid-state switch
•
for dc circuits: connect protection diodes in the correct polarity across the relay coil
•
for ac circuits: connect a Voltage Dependent Resistor (VDR) or other ac compatible
component (such as zeners and protection diodes in combination) in the correct
polarity across the relay coil
component (such as zeners and protection diodes in combination) in the correct
polarity across the relay coil
Process Cautions
Notes:
• The transmitter is specified for use at temperatures ranging from –40
°
C to
85
°
C (–40
o
F to 185
o
F): if your process temperature is outside this range, a
standard option is available with a thermal isolator.
• Before mounting the SITRANS LC 500, check to ensure the threads are
matching to avoid damaging them.
? ?
CAUTION: Consider material surface
configuration when installing unit.
configuration when installing unit.
CAUTIONS:
• With a centrally mounted cable version,
take care that the tensile load does not
exceed probe or vessel rating
exceed probe or vessel rating
• With a cable version mounted close to
the tank wall, take care that the product
does not push the cable against the tank
wall: a spring can be used as a retainer.
does not push the cable against the tank
wall: a spring can be used as a retainer.
500 mm
(20”) min.