Siemens SITRANS L Operating Instructions Manual page 265

shot
one transmit pulse or measurement.
stilling-well
see stillpipe.
stillpipe
a pipe that is mounted inside a vessel parallel to the vessel wall, and is open to the vessel at
the bottom.
TVT (Time Varying Threshold)
a time-varying curve that determines the threshold level above which echoes are determined
to be valid.
SITRANS LR250 with FOUNDATION FIELDBUS
Operating Instructions, 09/2021, A5E32221411-AH
Glossary
265