Great Plains Industries TM Serie Mode D'emploi page 4

When fluid is flowing through the meter, a small
propeller icon is highlighted.
NOTE: Totalization counts total units without
differentiating between gallons, litres or
field calibrated units.
Flowrate Feature
To use this feature, press and release DISPLAY
button until FLOWRATE icon appears. The
factory set time base will be highlighted to the
right of FLOWRATE (M = minutes, H = hours,
D = days). When FLOWRATE is invoked, the
display will be indicating rate of flow.
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.
Factory and Field Calibration
All calibration information is visible to the user
as icons on the top line of the display, above
the numeric digits.
All units are configured with a "factory" calibra-
tion. Both gallons and litres are available ("GL"
or "LT" will be displayed). While holding the
CALIBRATE button, briefly press DISPLAY to
toggle between gallons and litres. This factory
calibration (indicated with FAC) is permanently
programmed into the computer and is not user
adjustable.
NOTE: Your computer may have other units of
measure programmed into it. If so, holding
the CALIBRATE button and momentarily
pressing the DISPLAY button will toggle
through all factory set units. Other pos-
sible units are: IGL (imperial gallon), QT
(quart), CF (cubic feet), CM (cubic meter),
BL (42 gal. barrel), CC (cubic centimeter)
or OZ (ounce).
Switching between different units will not corrupt
the Total's contents. For example, in GL mode,
the computer totalizes 10.00 gallons, if the user
switches to LT mode, the display will read 37.85
litres (the same volume, different unit).
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The "field" calibration may be set by the user,
and can be changed or modified at any time
using the calibration procedure described in the
Calibration Section. Totals or flowrate derived
from the field calibration are invoked when the
FAC icon is no longer visible on the top line of
the display.
CALIBRATION
Verify Accuracy Before
Beginning Field Calibration
For the most accurate results, dispense at
a flowrate which best simulates your actual
operating conditions. Avoid "dribbling" more
fluid or repeatedly starting and stopping the
flow. This can result in less accurate calibrations.
Make sure you meet the meter's minimum
flowrate requirements:
TM Series Meters
1/2 inch meter
3/4 inch meter
1 inch meter
1-1/2 inch meter
2 inch meter
The use of a uniformly dependable, accurate
calibration container is recommended for the
most accurate results. Due to high flowrate, it
is strongly recommended that calibration be
completed with a combination of volume and
weight using fine resolution scales.
For best results, the meter should be installed
and purged of air before field calibration.
Field Calibration with
Computer Display
Field Calibration and Factory Calibration are
defined in the Operation Section. Factory
calibration settings are programmed into each
computer during manufacturing, using water
at 70° F (21° C). Readings using the Factory
Calibration (FAC) may not be accurate in some
situations, for example, under extreme tem-
perature conditions, non-standard plumbing
configurations or with fluids other than water.
1 GPM (3.8 LPM)
2 GPM (7.5 LPM)
5 GPM (18.8 LPM)
10 GPM (37.5 LPM)
20 GPM (75 LPM)