GPI GM001, GX500, GX510, GM003, GM002 Owner's Manual
...
5252 East 36th Street North
Wichita, KS USA 67220-3205
TEL: 316-686-7361
FAX: 316-686-6746
1- 888 -99 6-3 837
SAVE THESE INSTRUCTIONS
GPI 4-20 mA Out with Display
Owner’s Manual
Local Models
GX510
To the owner…
Congratulations on receiving your GPI 4-20 mA Out with
Display. We are pleased to provide you with a product
designed to give you maximum reliability and efficiency.
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.
Display information in this manual supersedes display information provided with your meter.
GM Series
(Shown here on GM001)
Remote Model
GX500
TABLE OF CONTENTS
General Information ............................................................. 2
Safety Instructions ............................................................... 2
Installation ........................................................................... 2
Wiring .................................................................................. 3
Configuration ....................................................................... 9
Operation ............................................................................. 9
Calibration ........................................................................... 9
K-Factor Method Calibration Procedures ........................... 9
Correction Factor Method Calibration Procedures ........... 10
Maintenance ...................................................................... 12
Troubleshooting ................................................................. 13
Dimensional Drawings ....................................................... 14
Illustrated Parts Drawing ................................................... 15
Specifications - Local ........................................................ 16
Specifications - Remote .................................................... 17
Service ............................................................................... 18
WEEE Directive .................................................................. 18
06/10
Rev. H 920765-05
1
GENERAL INFORMATION
SAFETY INSTRUCTIONS
This manual will assist you in operating and maintaining
the GPI electronics supplied with your GPI meter or as an
accessory unit on both local and remote models. The GPI
Electronics can be used in indoor or outdoor applications
where occasional exposure to moisture is common.
• The 4-20 mA Out with Display is available in two versions. One indicates flowrate in units/minute and one
in units/hour. Both indicate flow totals in gallons and
litres.
• The 4-20 mA Out with Display can be used on all GPI
models, including the Precision G series, the Industrial
Grade G2 series, the Commercial Grade A1 series,
and the positive displacement GM series oval gear
meters.
Product differences in this manual are identified by either,
Local or Remote as necessary.
If the meter was purchased with this display, then it will come
calibrated from the factory for gallons “GAL” and litre “LTR”.
Field calibration is also available.
If the unit was purchased as an accessory or remote, the
calibration has not been entered and the end user will need
to configure and calibrate the display.
The GPI 4-20 mA Out with Display is a flow totalizer and rate
meter with industry standard current loop output. The unit is
loop powered, and provides a 4-20 mA analog output proportional to the frequency signal for communication with PLCs
and other customer equipment. The 4-20 mA (or 0-20 mA)
output is calibrated under actual flow conditions with simple
push-button calibration. Auxiliary output includes 0-5 VDC.
The microprocessor-based electronics have extremely low
power requirements and are completely powered by the
4-20 loop. The electronics provides the options of local (on
the meter) and/or remote (up to 5,000 feet) display. Flow total
and rate are displayed on a large 6-digit LCD readout with
two-point floating decimal for totals from .01 to 999,999. All
operations are easily accessed with the push buttons on the
display front panel.
CAUTION
This unit is not FM Approved. Therefore, use of this
transmitter with an approved metering system voids
FM Approval.
NOTE: This unit is loop powered, requiring an input power
supply of 8.5 to 35 volts (24 VDC is recommended).
NOTE: Setpoint calibration of the unit is required for the 4-20
mA, 0-20 mA, and 0-5 V output options.
• When measuring flammable liquids, observe precautions against fire or explosion.
• When working in hazardous environments, always
exercise appropriate safety precautions.
• When applying external power to the transmitter, use
DC power only.
• Disconnect external power to the transmitter before
detaching or attaching input or output wires.
• Ground loops between sensor and user equipment can
damage the transmitter and can be dangerous.
• If you cannot galvanically isolate the sensor from earth
ground, you may need to use the transmitter’s optically
isolated inputs.
• Be sure O-rings and seals are kept in good repair.
INSTALLATION
CAUTION
Installation should be performed only by qualified
personnel, and in accordance with local governing
regulations.
The following installation guidelines are separated by meter
series and mounting type.
Precision G Series:
• Local – The GX510 4-20 mA Out with Display mounts
directly to the 1 inch MNPT conduit connector.
• Remote – The GX500 4-20 mA Out with Display
connects via an output cable as shown in the Wiring
Diagram.
Industrial Grade G2 Series:
• Local – The GX510 4-20 mA Out with Display requires
the GPI Conduit Connector Kit (Part #113437-01) for
local mounting to the G2 series meter.
• Remote – The GX500 4-20 mA Out with Display
connects via an output cable as shown in the Wiring
Diagram.
Commercial Grade A1 Series:
• Local – The GX510 4-20 mA Out with Display requires
the GPI Conduit Connector Kit (Part #113437-01) for
local mounting to the A1 series meter.
• Remote – The GX500 4-20 mA Out with Display
connects via an output cable as shown in the Wiring
Diagram.
2
GM Oval Gear Series:
• Local – The 4-20 mA Out with Display is mounted
directly to the oval gear meter housing.
• Remote – The GX500 4-20 mA Out with Display connects via an output cable as shown in the Wiring Diagram.
Mount the GPI 4-20 mA Out with Display using bolts, screws
or standard U-bolts for pipes. Mounting options include:
• Wall
• Pipe
• Meter (1 inch FNPT conduit connection required)
WIRING
This manual refers to various models of GPI flowmeters.
Determine what type of input the electronics will receive and
what type of output, if any, you require. Use the diagrams
found in the wiring diagrams section (if the unit is not already
wired) to correctly wire the system.
The display is externally powered by the loop.
NOTE: Totals will be lost with loss of power on loop.
Environmental
Choose a mounting location suitable for the 4-20 mA Out with
Display. The ideal mounting location is where the:
• flowmeter is as close as possible.
• mounting surface has minimal vibration.
• ambient temperature is +32°F to +140°F (0°C to
+60°C).
• cable lengths are minimal.
Avoid mounting locations where the 4-20 mA Out with Display is:
• subject to constant exposure to water or other liquids
(occasional low-pressure splashing will not harm unit
if cable entry points are well-sealed).
• subject to > 5g shock loading.
• facing the sun directly for long periods of time.
• close to high voltage/current runs, DC motors, internal
combustion engines, or frequency inverters.
Cable Guidelines
4-20 mA Current Loop:
• The current loop itself is very resistant to electrical noise
pickup and shielded cable is seldom needed except in
very “noisy” (electrical) locations and/or when very long
runs (thousands of feet) are used.
Sensor Cabling:
• Some products come with 20 ft. of shielded cable.
• If you require a longer cable, a 100 ft. cable kit is available from GPI, or use Belden 9363 cable. When wiring
longer lengths of cable, be sure to connect the shield
to LOCAL-COM ONLY! (Multiple shield connections
may cause ground-loop problems).
• Some trial and error may be needed because of the wide
variety of user conditions. Try to keep cable lengths
short!
CAUTION
Determine maximum power supply voltage after determining maximum allowable voltage of all electronic
devices in the system.
The 4-20 mA Out with Display may come with 20 ft. of cable
to connect to the meter. The customer must supply the communication loop cable. Although the unit is usually powered
through the communication loop, there are some circumstances that might require external power.
Connecting the Equipment:
• Remove the faceplate by removing the four (4) corner
screws.
• Attach wiring from your equipment according to the
following terminal connections and wiring diagrams,
depending on your circumstances.
Terminal Connections
Remote Transmitter INPUTS / OUTPUTS
ISO-IN COM: Return for
isolated inputs
ISO-LF IN: Optically-Isolated
High-level Low-frequency
Input
ISO-HF IN: Optically-Isolated
High-level High-frequency
Input
HL-LF IN: High-level Low-
frequency Input. 150 Hz
maximum
COIL-A IN: Low-level
Sinewave Input
COIL-B IN: Low-level
Sinewave Input
HL-HF IN: High-level High-
frequency Input
EDM PWR: Local Vcc. Regu-
lated 5-VDC internal power.
This terminal can supply up
to approximately 2.5 mA,
continuously, to external
circuitry. Typical load/line regulation under ordinary conditions is about ± 10%
LOCAL COM: Local Common
0-5 V OUT: 0 to 5 V Voltage Output. Frequency to Analog Output.
PULSE OUT: Pulse-Out Frequency Output Signal. It is an “open-collector” output
(also known as “n-p-n” or “current-sinking”), referenced to transmitter Local-
Common
LOOP (–): 4 to 20 mA Current Loop – current into transmitter
LOOP (+): 4 to 20 mA Current Loop – current out of transmitter
ISO-IN COM
ISO-LF IN
ISO-HF IN
HL-LF IN
COIL-A IN
COIL-B IN
HL-HF IN
EDM PWR
LOCAL COM
LOCAL COM
0-5 V OUT
PULSE OUT
LOOP (–)
LOOP (+)
3
W I R I N G D I A G R A M 1
— 4-20 mA or 0-20 mA Output —
Customer Equipment with Built-in Power Supply
Input: Turbine Mounted Display or Conditioned Signal Sensor (Open Collector)
Output: Customer Equipment, 0-20 mA Sensing, Built-in Loop Power Supply
INPUTS OUTPUTS
Ext. Power
(Red)
GPI
Meter
Note Regarding Resistor “R”: R not generally required for distance up to 25 ft.
Use R = 10k (10000 ohms) for distance up to 50 ft.
Use R = 5.1k (5100 ohms) for distance up to 100 ft.
Use R = 2.7k (2700 ohms) for distance up to 250 ft.
Do not use R less than 2.4k (ohms)
Pulse Out
(White)
Common
(Black)
Shield recommended.
If used, connect to
transmitter’s local
com ONLY!
EDM Power
R
(See note)
HL-HF IN
Local Com
W I R I N G D I A G R A M 2
— 4-20 mA or 0-20 mA Output —
Customer Equipment With Built-in Power Supply – High Temp Applications
Input: Standard Remote Sensor (Variable Reluctance Pickup Coil)
Output: Customer Equipment, 0-20 mA Sensing, Built-in Loop Power Supply
4-20 mA Out
with Display
Loop (+)
(current)
Min. V = 8.5
Max. V = 35
Loop (–)
(current)
CAUTION: Whe n reassembling the f ac ep la te ,
make sure that the enclosure seal is not
crimped or twisted. Do not over-tighten
corner screws (hand tighten only). Faceplate can be rotated 90°.
Customer
Equipment
GPI Meter
Unpowered
Pickup Coil
Only
➤ Minimum signal amplitude required for normal operation approx. 15 mV P-P
➤ Recommended cable type – twisted pair with shield
➤ Recommended maximum cable length – 20 ft.
Coil-A
Coil-B
Shield recommended.
Connect shield to
transmitter’s local
com ONLY!
4
INPUTS OUTPUTS
4-20 mA Out
with Display
Coil-A
Coil-B
Local Com
Loop (+)
(current)
Min. V = 8.5
Max. V = 35
Loop (–)
(current)
CAUTION: Whe n reassembling the f ac ep la te ,
make sure that the enclosure seal is not
crimped or twisted. Do not over-tighten
corner screws (hand tighten only). Faceplate can be rotated 90°.
Customer
Equipment
W I R I N G D I A G R A M 3
— 4-20 mA or 0-20 mA Output —
Customer Equipment Without Built-in Power Supply
Input: Turbine Mounted Display or Conditioned Signal Sensor (See inputs from Diagram 1) Standard Remote Sensor (See inputs from Diagram 2)
Output: Customer Equipment, 0-20 mA Sensing, Separate Power Supply
Loop Power Supply
Typ 12 – 24 VDC
(+)
(current)
Min. V = 8.5
Max. V = 35
(current)
(–)
CAUTION: Whe n reassembling the f ac ep la te ,
make sure that the enclosure seal is not
crimped or twisted. Do not over-tighten
corner s crews (hand tighten only).
Faceplate can be rotated 90°.
Customer Equipment
Loop (+) Input
Loop (–) Input
Frequency-Generating
Input Device
NOTE: Minimum loop power supply voltage required:
8.5V + (Max - Customer - Equipment - Drop) +
(Wiring - IR - Drop)
INPUTS OUTPUTS
4-20 mA Out
with Display
W I R I N G D I A G R A M 4
Loop (+)
Loop (–)
— 0-5 V Output —
Customer Equipment Without Built-in Power Supply
Input: Turbine Mounted Display or Conditioned Signal Sensor (See inputs from Diagram 1) Standard Remote Sensor (See inputs from Diagram 2)
Output: Customer Equipment, 0-5 V Sensing, Separate Loop Power Supply
Frequency-Generating
Input Device
NOTE 1: Loop power supply electrically isolated
from customer equipment
NOTE 2: Actual value of loop current (mA) is
disregarded
INPUTS OUTPUTS
4-20 mA Out
with Display
Loop (+)
Loop (–)
0-5 V Output
Local Com
Loop Power Supply
Typ 12 – 24 VDC
(+)
(current)
(current)
(–)
CAUTION: Whe n reassembling the f ac ep la te ,
make sure that the enclosure seal is not
crimped or twisted. Do not over-tighten
corner screws (hand tighten only). Faceplate can be rotated 90°.
Customer Equipment
0-5 V Analog Input (+)
Analog In Return (–)
5
W I R I N G D I A G R A M 5
— Pulse Output —
Customer Equipment Without Built-in Power Supply
Input: Turbine Mounted Display or Conditioned Signal Sensor (See inputs from Diagram 1) Standard Remote Sensor (See inputs from Diagram 2)
Output: Customer Equipment, Frequency Sensing, Separate Loop Power Supply
INPUTS OUTPUTS
Frequency-Generating
Input Device
NOTE 1: Loop power supply electrically isolated
from customer equipment
NOTE 2: Actual value of loop current (mA) is
disregarded
Customer Equipment with Built-in Power Supply
Output: Customer Equipment, 0-20 mA Sensing, Built-in Loop Power Supply
Loop Power Supply
Typ 12 – 24 VDC
4-20 mA Out
with Display
W I R I N G D I A G R A M 6
Loop (+)
(current)
Loop (–)
(current)
Pulse Out
Local Com
(+)
(–)
CAUTION: Whe n reassembling the f ac ep la te ,
— 4-20 mA or 0-20 mA Output —
Input: Reed Switch
Customer Equipment
Open-Collector Pulse In
Pulse-In Return
make sure that the enclosure seal is not
crimped or twisted. Do not over-tighten
corner screws (hand tighten only). Faceplate can be rotated 90°.
GPI
Meter
* Optional to use HL-HF IN
Signal
Common
Black Blue Red
PCB Assembly
INPUTS OUTPUTS
* HL-LF IN
Local Com
GPI
4-20 mA Out
Pulse Out
EDM Pwr
with Display
Loop (+)
Loop (–)
(current)
Min. V = 8.5
Max. V = 35
(current)
CAUTION: Whe n reassembling the f ac ep la te ,
make sure that the enclosure seal is not
crimped or twisted. Do not over-tighten
corner screws (hand tighten only). Faceplate can be rotated 90°.
Customer
Equipment
6
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