Congratulations on receiving your
GPI Commercial Grade Computer
Electronics. We are pleased to pro‑
vide you with a product designed
to give you maximum reliability and
eciency.
Our business is the design, manu‑
facture, and marketing of liquid han‑
dling, agricultural, and recreational
products. We succeed because we
provide customers with innovative,
reliable, safe, timely, and compet‑
itively‑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, depend‑
able service.
Victor Lukic, President
Great Plains Industries, Inc.
TABLE OF CONTENTS
General Information .............................2
Meter Installation .................................3
This manual will assist you in oper‑
ating and maintaining the Computer
Electronics of the GPI Commer‑
cial Grade Meters. (See Figure 1)
Calibration details are given in this
manual. Information on turbine hous‑
ings and accessory modules are
contained in other manuals. Please
reference those as necessary.
TURBINE HOUSIN G
2
Figure 1
COMPUTER
ELECTRONICS
Before Getting Started
Take the time to fully acquaint your‑
self 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 through‑
out the manual to call your
attention to safety messages.
WARNING
CAUTION
Notes give information that can
improveeciency ofoperations.
Warnings alert
you to the poten‑
tial for personal
injury.
Cautions call
your attention to
practices or pro‑
cedures which
may damage your
equipment.
It is your responsibility to make sure
that all operators have access to ad‑
equate instructions about safe oper‑
ating 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 consid‑
ered 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 con‑
structed 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
handleonly uidsthatarecom‑
patible with all wetted materials.
2. When measuring ammable liq‑
uids, observe precautions against
reorexplosion.
3. When handling hazardous liq‑
uids, always follow the liquid
manufacturer’s safety precau‑
tions.
4. When working in hazardous
environments, always exercise
appropriate safety precautions.
5. For best results, always verify
accuracy before use.
METER INSTALLATION
Avoid electronically “noisy”
environments. Install 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. Open the discharge valve
or nozzle and allow fluid to
completelyllthesystem.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,accuracyshouldbeveried
periodically as part of a routine
maintenance schedule.
3
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