Lake Monitors Flow Transmitters - Manual (Page 5)

Warning and Precautionary Areas
1) The meters are designed to operate in systems that flow in only one
direction: the direction of the arrow on the flow scale. Attempting operation
in the reverse direction may cause damage to the meter or other system
components.
2) The window tube of standard meters is made of Lexan. Lexan can be
safely cleaned with soap and water. However, many other cleaning agents
can damage Lexan, causing discoloration or crazing. If you are unsure of
your cleaning agent, call the General Electric Lexan Compatibility
Reference Line at 800-845-0600.
3) To retain accuracy and repeatability many internal moving parts are
precision machined and require filtration of at least 74 micron or a
200 mesh screen.
4) All meters are tested and calibrated at our test facility using a light
hydraulic oil. The units are well drained, but some oil residue may still remain
within the meters. Please check the compatibility with your fluid. The meter
may have to be cleaned before use. (See “Cleaning & Inspection”)
5) When installing aluminum or brass meters onto steel pipe caution should
be taken not to over tighten the pipe connections. The thread in the meter
end fittings may strip if over tightened.
6) Aluminum and brass meters should not be used in systems where the
assembled piping is not supported. Heavy weight may cause the meter
to bend or malfunction.
7) Operating Temperature: In standard meters, several components have a
maximum temperature rating of 240ºF (115ºC).
8) Operating Pressure: All meters are tested at a burst pressure three times
of operating pressure. Meters should not be used over the operating
pressure rating.
9) Pressure and flow surges may disengage the outer magnet follower from
the transfer magnet. If this occurs, a shock suppressor should be used to
eliminate malfunction.
10)Thread seal tape: Caution should be used when using thread seal tape
on pipe thread joints. Leave at least 1/8" (3mm) of pipe thread exposed
from end of pipe when applying tape.
11) These meters, as well as many other meters, use an internal transfer
magnet in the design. Because of this magnet, be aware of the following:
a) Keep flow meters away from computer disks and tapes.
b) If metal particles are moving through the system, a magnetic
filter may be required.
Page 5 / Flow Meters / Lake Manual