55
Level
trOll
Operator’s Manual
0052210 rev. 006
InStaLLatIon oF a LeveL troLL 300 or other
non-vented LeveL troLL
All Level TROLL 300 and non-vented Level TROLL 500 and 700
instruments include non-vented (absolute, PSIA) pressure sensors and
do not require vented cable for proper operation. They may be
deployed on non-vented RuggedCable or with a Twist-Lock
Hanger and economical stainless steel suspension wire while
logging data.
• Because the Twist-Lock Hanger has no communication
capabilities, program the Level TROLL in advance, and
download the data the same way
• Logged pressure data will show the effects of changes in
barometric pressure (unlike vented Level TROLLs). However,
post-processing tools such as
may be
used to eliminate the effects of barometric pressure changes
from the data, if required.
seCtion 6: FieLd instaLLation
TIP:
Be sure
to program a
non-vented Level
TROLL or BaroTROLL
before attaching the
Twist-Lock Hanger, as
this accessory has no
communication capability.
DO NOT
submerge a
non-vented
Level TROLL 500 or 700
without first attaching a
Twist-Lock Hanger, or a
cable, as the unit could be
damaged by flooding.
Although the Level TROLL
300 is completely sealed
from flooding, a Hanger is
recommended.
