Page 1
Commercial Grade
09 COMPUTER
ELECTRONICS
Owner’s Manual
09/11
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To the owner . .
Congratulations on receiving your
GPI Commercial Grade Computer
Electronics. We are pleased to provide you with a product designed
to give you maximum reliability and
efciency.
Our business is the design, manufacture, and marketing of liquid handling, agricultural, and recreational
products. We succeed because we
provide customers with innovative,
reliable, safe, timely, and competitively-priced products. We pride
ourselves in conducting our business
with integrity and professionalism.
We are proud to provide you with a
quality product and the support you
need to obtain years of safe, dependable service.
President
Great Plains Industries, Inc.
TABLE OF CONTENTS
General Information .............................2
Installation
Operation
Calibration
User Conguration...............................6
Maintenance
Troubleshooting
Specications
Parts
Service...............................................10
...........................................3
.............................................4
...........................................5
........................................7
...................................8
......................................9
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GENERAL INFORMATION
This manual will assist you in operating and maintaining the Computer
Electronics of the GPI Commercial Grade Meters. (See Figure 1)
Calibration details are given in this
manual. Information on turbine housings and accessory modules are
contained in other manuals. Please
reference those as necessary.
Figure 1
Turbine
Housing
Computer
Electronics
2
Before Getting Started
Take the time to fully acquaint yourself with all information about the
components of your GPI Electronic
Digital Meter. If you need assistance,
contact the distributor from whom
you purchased your computer.
This symbol is used throughout the manual to call your
attention to safety messages.
WARNING
CAUTION
Notes give information that can
improve efciency of operations.
Warnings alert
you to the potential for personal
injury.
Caut i o n s call
your attention to
practices or procedure s w h i c h
may damage your
equipment.
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It is your responsibility to make sure
that all operators have access to adequate instructions about safe operating and maintenance procedures.
Read Me!
For your safety, review the major
warnings and cautions below before
operating your equipment.
WARNING
The apparatus enclosure may
contain aluminum and is considered to constitute a potential risk
of ignition by impact or friction.
Care must be taken into account
during installation and use to
prevent impact or friction.
WARNING
Part of the enclosure is constructed from plastic. To prevent
the risk of electrostatic sparking
the plastic surface should only
be cleaned with a damp cloth.
1. This equipment is approved to
handle only uids that are compatible with all wetted materials.
2. When measuring ammable liquids, observe precautions against
re or explosion.
3. When handling hazardous liquids, always follow the liquid
manufacturer’s safety precautions.
4. Wh en working in haz ardous
environments, always exercise
appropriate safety precautions.
5. For best results, always verify
accuracy before use.
Product Description
These computer electronics are
designed specically for use on GPI
Commercial Grade Turbine Housings.
The CMOS, microprocessor-based
electronics have extremely low power requirements and data retention
capabilities in both RAM and ROM.
Information is clearly displayed on
a large 6-digit LCD readout with
two-point oating decimal for totals
from .01 to 999,999. All operations
are easily accessed with the two
buttons on the front panel.
Liquid flows through the turbine
housing causing an internal rotor to
spin. As the rotor spins, an electrical
signal is generated in the pickup coil.
This pulse data is translated from
the turbine into calibrated ow units
shown on the computer’s readout.
Upon receipt, examine your equipment for visible damage. The compu ter is a prec isio n meas urin g
instrument and should be handled as
such. If any items appear damaged
or missing, contact your distributor.
Make sure your computer model
meets your specic needs. Refer to
the Specications Section to conrm
required features. The model number
of your computer is displayed on the
lower side of the computer and also
underneath a battery.
INSTALLATION
If you ordered your computer electronics with a turbine housing, it is
installed at the factory.
If you ordered your computer separately from you r turbine, simpl y
mount the computer on the turbine
with the four screws at the corners
of the faceplate. Make sure the seal
is fully seated before tightening the
screws.
If you ordered the computer with
turbine and an accessory module,
please review and thoroughly understand all installation instructions
before proceeding.
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All GPI turbines are designed to
measure ow in only one direction.
The direction is indicated by the
arrow cast-molded in the turbine
outlet. If the opposite direction is
desired, simply rotate the computer
electronics 180 degrees prior to
installation.
Av o id e le c tr o ni ca l ly “ no i sy ”
environments. Ins tal l at least 6
inches (15.2 cm) away from motors,
relays, or transformers.
All GPI A1 Series meters are Factory
Mutual Approved and carry a Class
1, Division 1 Approval for hazardous
environments. In addition, GPI meters
have NEMA Type 4 enclosures.
They are tested and calibrated at
the factory using state-of-the-art
calibration procedures and testing
equipment.
To ensure accurate measurement,
remove all air from the system before
use.
1. Ensure some back pressure on
the turbine.
2. Ope n th e d is ch a rg e valve
or nozzle and allow flui d to
completely ll the system. Make
sure the stream is full and steady.
3. Close the discharge valve or
nozzle.
4. Start normal operations.
It is strongly recommended that
accuracy be veried prior to use.
To do this, remove all air from the
system, measure an exact known
volume into an accurate container,
and verify the volume against the
readout or recording equipment. If
necessary, use a correction factor
to figure final volume . For best
results, accuracy should be veried
periodically as part of a routine
maintenance schedule.
OPERATION
Computer Display
All operations are reected in the
LCD readout. The large center digits
indicate amounts, where smaller
words or “icons” located above and
below indicate specic information
regarding totals, ow, calibration and
units of measure.
Activate the Meter
Computer is on continuously and
al ways re ady to per form . T he
com puter is p o wered by f i eld
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.
Batch and Cumulative
Totals
The computer maintains two totals.
The Cumulative Total provides continuous measurement and cannot
be manually reset. The Batch Total
can be reset to measure ow during
a single use. The Cumulative Total
is labeled TOTAL 1, Batch Total is
labeled TOTAL 2 BATCH.
When the Cumulative Total reaches
a display reading of 999,999 the
computer will highlight an X10 icon.
This indicates to the operator that a
zero must be added to the 6 digits
shown. When the next rollover occurs,
the computer will highlight an X100
icon. This indicates to the operator
that two zeros must be added to the
6 digits shown.
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Press the DISPLAY button briey
to switch between the TOTAL 1,
TOTAL 2 BATCH and FLOWRATE
(if applicable). Press DISPLAY briey
to display the TOTAL 2 BATCH. Hold
the DISPLAY button for 3 seconds to
reset the Batch Total to zero.
When uid is owing through the
meter, a small propeller icon is
highlighted.
Flowrate Feature (some models)
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 ow.
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” calibration. Both gallons
and litres are available (“GL” or “LT”
will be displayed). While holding the
CALIBRATE button, briey 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 oth-
er 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 possible 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).
The “eld” calibration may be set by
the user, and can be changed or modied at any time using the calibration
procedure described in the Calibration Section. Totals derived from the
eld 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 res ults,
dispense at a owrate which best
simulates your actual operating conditions. Avoid “dribbling” more uid or
repeatedly starting and stopping the
ow. This can result in less accurate
calibrations.
Make sure you meet the meter’s
minimum owrate requirements:
Low Flow meter 0.3 GPM (1 LPM)
1 inch meter 3 GPM (11 LPM)
2 inch meter 30 GPM (113 LPM)
The use of a uniformly dependable,
accurate calibration container is
recommended for the most accurate
results. For best results, the meter
should be installed and purged of air
before eld calibration.
Due to high owrate, it is strongly
recommended that Field Calibration
of two inch meters be completed with
a combination of volume and weight
using ne resolution scales.
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Field Calibration Necessity
Field Calibration and Factory Calibration are dened in the Operation
Section. Factory calibration settings
are programmed into each computer
during manufacturing, using stoddard
text solvent at 70° F (21° C) for Low
Flow and one inch meters and water
at 70° F (21° C) for two inch meters.
Settings are correct for light liquids
such as water, gasoline or diesel.
Readings using the Factory Calibration (FAC) may not be accurate in
some situations, for example, “heavy”
liquids such as motor oil and under
extreme temperature conditions, nonstandard plumbing congurations
or with uids other than mentioned
above.
For improved accuracy under such
conditions, the computer allows for
“eld” calibration, that is, user entry
of custom calibration parameters. A
“single-point” calibration may yield
acceptable accuracy when used in
a non-standard application.
3. The DISPLAY button can then
be pushed to select the numeric
positions. Press the CALIBRATE
button to scroll from 0 to 9. Enter
the percentage of change you
want the display to correct. When
satised with the value, press
both CALIBRATE and DISPLAY
buttons simultaneously. CALEnd
will be displayed and unit will go
back to normal operation, less the
FAC (factory calibration) icon.
4. All enabled units-of-measure remain visible and selectable – the
entered correction will be applied
to all enabled units.
5. To return to factory calibration
(FAC), press and hold both CALIBRATE and DISPLAY buttons for
about 3 seconds until FAcCAL is
displayed. Then release buttons.
Unit should return to normal operation and FAC icon is visible.
USER CONFIGURATION
Field Calibration
Procedures (Correction
Factor Method)
1. To calibrate, press and hold the
CALIBRATE and DISPLAY buttons for about 3 seconds until
you see FLdCAL. Release both
buttons and you will see CF - 00.0.
You are now in the eld calibration
mode and values from -99.9% to
+99.9% can be entered.
+
2. The
6
/– position appears either
as an “underscore” character for
plus, or as a “hyphen” character
for minus. The DISPLAY button selects the position and the
CALIBRATE button toggles this
character.
The “09” series GPI display has been
programmed with many new features,
most of which can be enabled by the
end user by way of a conguration
process. By disabling “unnecessary” features, day-to-day owmeter
operation can be greatly simplied,
making the unit easier to use. There
are several features that GPI disables
by default when shipping standard
meters. (For example, K-Factor Entry
Field Calibration, described below.)
For more advanced users, it may
be desirable to enable ALL possible
features. User congurable features
include:
• Totalizers/Modes Enabled (Cumulative Total, Batch 2 Total, Flowrate
Mode)
• Flowrate Timebase (Minute, Hour,
Day)
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• Factory Calibration Curve Units
Enabled – Gallons, Litres, Imperial
Gallons, Quarts, Ounces, Cubic
Feet, Cubic Centimeters, Cubic
Meters or Barrels (42 Gal.)
• Dispense/Display or K-Fa cto r
Entry Calibration
Changing Conguration
Settings
Access to the conguration process
is restricted for security until a
“password” is entered. Contact your
distributor or GPI to get the password
and instructions to unlock and reset
conguration settings. This information is also available on the GPI Web
site. Congurations are entered and
stored as six-digit “codes” where
each digit represents a setting for
one of the conguration options. New
conguration settings are stored in
the computer’s long-term memory
and will not be lost either in OFF
mode or during battery change.
batteries before storing the meter
will extend battery life. If the meter’s
readout should become dim, blank
or the low battery message appears
(see below), the batteries need to be
replaced. Replacement batteries can
be ordered from your distributor or
the factory. See details in the Parts
Section.
When batteries are disconnected or
fail, the Batch and Cumulative Totals
will maintain the value they had.
Factory and Field Calibration Curves
are retained in the meter’s computer
when power is lost.
It is strongly recommended that
battery check and terminal cleaning
be a part of a routine maintenance
schedule. Battery terminals should
be cleaned annually. Batteries can be
replaced without removing the meter
from the piping system.
K-Factor Entry Field
Calibration
Presently all GPI computers are
programmed with three different
eld calibration methods, only one of
which is active, the “correction factor”
calibration procedure described
above. It is possible to activate
“K-F a c t or en t ry” or “di s p e nse/
display” eld calibration by changing
conguration settings. Contact your
distributor or GPI to get the correct
password, conguration code and
in s truct ions fo r this ca libra tion
method. This information is also
available on the GPI Web site.
MAINTENANCE
The computer electronics is powered
by lithium batteries which provide at
least 5 years of use. Removing the
Replace Batteries
1. Remove the corner screws from
the meter face and lift the computer electronics from the turbine.
2. Remove the batteries.
3. Check the battery terminals and
remove any corrosion.
4. Install the new batteries and
make sure the positive posts
are positioned correctly. When
the batteries are installed correctly, the computer powers on
automatically and the readout
displays information.
5. Make sure the seal is fully seated
before placing the computer electronics on the turbine. Tighten the
four screws.
6. Do not clean exterior of computer
assembly with Isopropyl Alcohol.
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TROUBLESHOOTING
Symptom Probable Cause Corrective Action
A. METER IS NOT 1. Field Calibration not Field calibrate again or select
ACCURATE performed properly Factory Calibration.
2. Factory Calibration not Perform a Field Calibration accord suitable for liquid being ing to Calibration Section.
measured
3. Meter operated below Increase owrate.
minimum owrate
4. Meter partially clogged Remove meter. Clean carefully.
with dried liquid Make sure rotor spins freely.
5. Turbine bearings Remove meter. Clean carefully.
partially clogged with Make sure rotor spins freely.
dried liquid
6. Sealant material Remove meter. Make sure rotor
wrapped around rotor spins freely.
7. Installed too close to Install correctly.
ttings
8. Installed too close to Install correctly.
motors or electrically
“noisy” environment
B. READOUT 1. Batteries weak, dead Remove computer, check and
FADED OR or not connected replace batteries if necessary.
BLANK
2. Computer defective Contact the factory.
C. NORMAL 1. Field Calibration not Field Calibrate again or select
FLOWRATE performed correctly Factory Calibration.
BUT METER
2. Rotor stuck or damaged Remove meter. Make sure rotor
DOES NOT
spins freely.
COUNT
3. Sealant material Remove meter. Make sure rotor
wrapped around rotor spins freely.
4. Computer defective Contact the factory.
D. REDUCED 1. Meter clogged with Remove meter. Clean carefully.
FLOWRATE dried liquids Make sure rotor spins freely.
AND METER
2. Below minimum Increase ow.
DOES NOT
owrate
COUNT
E. CANNOT GET 1. Wrong button sequence Proceed with calibration according
METER INTO to the Calibration Section.
FIELD CALI-
2. Computer circuit board Replace computer. Contact the
BRATION
defective factory.
3. Button defective Replace computer. Contact the
factory.
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SPECIFICATIONS
Standard Features Include:
• 2 Totalizing Registers
• 1 Factory Calibration Curve
• 1 Field Calibration Curve
• Rate of Flow Feature
• Flowrate Time Base in Minutes
Input Pulse Rate:
Min. Pulse In: DC
Min. Coil Input: 10 Hz
Max. Raw: 1,000 Hz
K-Factor:
Min.: 0.1 pulses/unit
Max.: > 999,999 pulses/
unit
Field Calibration Correction:
Min.: –99.9%
Max. +99.9%
Readout Totals:
Min. Display: 0.01
Max. Display: 999,999 (x 100)
Temperatures:
Operational: 0° to +140° F
(-18° to +60° C)
Storage: -40° to +158° F
(-40° to +70° C)
If wider operating temperature
ranges are desired, reference
information on GPI Remote Kits.
Power:
Internal
Power Supply: 2 Lithium
Batteries at
3 volts each
Battery Life: 5 years of use
Computer Electronics
Terminal Connections
J 1
J 10
J-1 Reset
Programming interfaces not
accessible to user.
J-2 Pulse Signal Output
This supplies a high-level am-
plied open collector signal.
Output will withstand a maximum open-circuit voltage of
60-volts DC and a maximum
closed-circuit of 100 mA.
J-4 Pulse Signal Input
Requires a sine or square
wave with open-circuit voltage of 3-30 volts P-P, a maximum rise/fall rate of 0.01
V/µ second and a maximum
frequency of 750 Hz.
J-5 Power Input
When used with Ground (J1-
6), this has reverse polarity
protection, but no on-board
voltage regulation. Supplied
voltage must be 5.75-volts
DC ±5%.
J-6 Ground
J-7, 8, Programming interfaces. Not
accessible to user.
9, 10
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NOTE: Safety approvals are void
if any external connections
are made to computer electronics.
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PARTS
The factory, when provided with
model number and serial number,
can replace your entire Computer
Electronics Assembly.
Order replacement kits, parts, and
accessories with the part numbers
given here.
Part No. Description
113520-1 Battery Replacement Kit
901002-52 Seal
116000-1 Large (5 gal.) Calibration
Container. Use for water
based uids. Do not use
with fuel products.
SERVICE
To obtain prompt, efcient service,
always be prepared with the following
information:
1. The model number of your computer electronics.
2. The serial number or manufacturing date code of your computer
electronics.
3. Specic information about part
numbers and descriptions.
For warranty work always be prepared with your original sales slip
or other evidence of purchase date.
Returning Parts
Please contact the factory before
returning any parts. It may be possible
to diagnose the trouble and identify
needed parts in a telephone call. GPI
can also inform you of any special
handling requirements you will need
to follow covering the transportation
and handling of equipment which has
been used to transfer hazardous or
ammable liquids.
CAUTION
D o n ot r e tu r n co m pu t er
electronics or meters without
specic authority from the GPI
Customer Service Department.
Du e to stri c t regu l a t io n s
gover n i n g t r a ns p o r t a ti o n ,
handli n g , a n d disposal of
hazardous or ammable liquids,
GPI will not accept computer
electronics or meters for rework
unless they are completely free
of liquid residue.
CAUTION
Met e r s not flushed before
shipment can be refused and
returned to the sender.
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