Siemens SITRANS LG270 Operating Instructions Manual page 19

Mounting in the vessel
insulation
PBD-51041066
Fig. 10: Position of the spacer or centering weight
1 Rod probe with spacer (steel)
2 Cable probe with centering weight
Note:
Measurement in a standpipe is not recommended for extremely
adhesive products.
Instructions for the measurement:
•
The 100 % point should not be above the upper tube connection
to the vessel
•
The 0 % point should not be below the lower tube connection to
the vessel
•
A false signal suppression with installed sensor is generally rec-
ommended to achieve maximum possible accuracy.
Instruments for a temperature range up to 280 °C or up to 450 °C
have a distance piece between process fitting and electronics hous-
ing. Ths distance piece is used for thermal decoupling of the electron-
ics against high process temperatures.
Information:
The distance piece must only be incorporated up to max. 50 mm (2 in)
in the vessel isolation. Only then, a reliable temperature decoupling is
guaranteed.
SITRANS LG270 - Operating Instructions
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