Daily Use - GPI 03 Guía De Operaciónes

• Low Flow meters have a 1/4-inch
internal diameter and a flow range
of 1.1 to 11 LPM.
• One inch meters have a 1-inch
internal diameter and a flow range
of 11 to 190 LPM.
• Two inch meters have a 2-inch
internal diameter and a flow range
of 113 to 1,135 LPM.

Daily Use

The operations given below are
the most commonly used. Others
are listed in the Operation Section.
Before use, review the Read Me!
instructions.
The meter turns on automatically
when flow starts and turns off
automatically shortly after flow stops.
The meter can also be turned on by
pressing and releasing the DISPLAY
button ("DISPLAY").
INSTALLATION
The following suggestions help
maximize performance. The meter
can be mounted either vertically
or horizontally. It should be field
calibrated in the same orientation in
which it is mounted. Avoid installing
the meter in electrically "noisy"
environments. If installed within15 cm
of large motors, relays or trans-
formers, the meter's accuracy may
be adversely affected.
For Low Flow or one inch meters,
install with 51 cm of straight pipe
upstream and 13 cm of straight pipe
downstream. For two inch meters,
install with 102 cm of straight pipe
upstream and 26 cm of straight pipe
downstream.
2
Flow control valves upstream from
the meter and within the straight
pipe distances given above can
adversely effect meter accuracy. This
is especially true when measuring
liquids with low vapor pressures. If
cavitation effects meter accuracy, a
flow control valve on the downstream
side of the meter can provide a back
pressure of 0.3 to 3.4 bar (5 to 50
PSI) to minimize the problem.
Foreign material in liquid can clog
the meter's rotor. If the problem
effects meter accuracy or material
coats the rotor, install screens to
filter the incoming flow. For Low
Flow meters use a 25 micron or
micrometer screen. For one inch or
two inch meters use a 500 micron
or micrometer screen. For maximum
accuracy, the velocity profile of the
flow entering the meter must be
uniform throughout the cross section
of the pipe.
OPERATION
Computer Display
All operations are reflected in the
LCD readout. The large center digits
indicate amounts, where smaller
words or "icons" located above and
below indicate specific information
regarding totals, flow, calibration and
units of measure.
Activate the Meter
Computer is on continuously and
always ready to perform. The
computer is powered by field
replaceable batteries. When display
becomes dim, faded or the low battery
message appears (see below),
the batteries need to be replaced.
Reference the Maintenance Section
for details.