Babbitt Liquid Level Gauge - Manual (Page 3)

FLIPPER/ROLLER INDICATION (OPTIONAL) (Cont.)
Flipper assemblies are offered as an option to the standard Babbitt indicator where surging or
turbulent levels may cause “de-coupling” problems. They are also more highly visible than the
standard indicator. They come with or without the scale in feet and inches.
INSTALLATION
LG Series gages are securely packed in specially designed crates to provide maximum protection
of the glass tube and float chamber during shipment. It is important to unpack and inspect each
gage upon receipt to insure the glass tube and chamber are free from damage. If you should find
bent or broken parts, contact Babbitt immediately. All Babbitt gages are fully insured against
damage or loss (unless otherwise specified by customer), however claims must be filed within 15
days from date of receipt of shipment.
The float chamber should always be leveled vertically. If it is not leveled vertically, the float may
become magnetically uncoupled from the bird. Should this happen during installation, simply use a
permanent magnet or magnet tool (available from Babbitt) to pull the bird back up to the float’s
magnetic field. See the TROUBLESHOOTING section of this manual for more details on
re-coupling float and birds.
Valves should be installed between the process vessel and level gage to allow draining, cleaning,
etc. Standard block valves may be used and can be ordered with the gage from Babbitt or supplied
by the customer. All gages are shipped complete with 0.125 inch composition gaskets.
NOTE: IF COMPOSITION GASKETS ARE NOT COMPATIBLE WITH YOUR PROCESS
CONDITIONS, APPROPRIATE GASKETS SHOULD BE USED IN PLACE OF THOSE SHIPPED
WITH THE GAGE.
PRESSURE TESTING
All Babbitt gages are hydrostatically test to 1.5 time the specified pressure rating prior to shipment
to insure pressure tolerance. However, the gage should be blocked in or the float removed if the
process vessel is to be pressure tested in the field by the customer as most vessels are tested at
much higher pressures than the maximum operating process pressure. While the float chamber is
capable of withstanding these higher pressures, the float is not and may collapse under vessel
tests. Should floats be damaged during testing, replacements are supplied at the customer’s
expense.
FLANGES & CONNECTIONS
Process connections and vent/drain flanges are designed to meet each customer’s specifications.
The graduated scale assembly is based on the length of the float chamber from center to center of
the process connections. All flange boltholes straddle the centerlines unless otherwise specified.
On STYLE A Level Gages “stop plates” are supplied to insure the float is contained inside the
chamber. For more information on dimensions, flanges, etc., see Tables 1-3 in the brochure.