GPI GM001, Руководство пользователя, Страница: 2 / 20

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• When measuring flammable liquids, observe precau-
tions 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 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.
GM Oval Gear Series:
•
Local
– The 4-20 mA Out with Display is mounted
directly to the oval gear meter housing.
GENERAL INFORMATION
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 ver-
sions. 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 propor-
tional 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.
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.
SAFETY INSTRUCTIONS
INSTALLATION
CAUTION
CAUTION