Avoid mounting locations where the Display is:
• subject to constant exposure to water or other liquids
(occasional low-pressure splashing will not harm unit).
• subject to > 5g shock loading.
• facing the sun directly for long periods of time.
Mount the GPI Display Remote using bolts, screws or standard
U-bolts for pipes. Mounting options include:
• Wall
• Pipe
• Meter (1 inch FNPT conduit connection required)
Some products come with 20 feet of shielded cable. GPI offers
an optional cable kit with 100 feet of cable (see spare parts
list). 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. Individual installation sites
vary widely, contact GPI Customer Service with questions
regarding your specific needs.
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. If the unit is not already
wired, use the diagrams found in the wiring diagrams section
to correctly wire the system.
Connecting the Equipment
1. Remove the faceplate by removing the four corner
screws.
2. Attach wiring from your equipment according to the
following terminal connections and wiring instructions,
depending on your circumstances. (See Terminal Con-
nections below)
The display may be powered by battery, externally powered
or both. When both are used (external power terminal as
primary with the battery terminal as back up) the batteries
should last up to 5 years. Connection and disconnection of
either power input, while the other is active will not interrupt
operation of the display.
Determine maximum power supply voltage after de-
termining maximum allowable voltage of all electronic
devices in the system.
WIRING
T E R M I N A L L O C A T I O N S
Battery, 6.5V to 20V
EXT_V(+)
External Power, 7V to 30V
COIL_B /
COIL_A
Any magnetic (variable-reluctance) pickup coil can
drive this input. Minimum signal amplitude is 10 mV
P-P. Maximum recommended signal amplitude is
1V P-P. Shielded cable may be used to increase
distance.
HI-F_IN
Either open-collector or active-drive signals are
accepted. If active-drive, signals of 5V to 12V P-P
amplitude are acceptable. Maximum frequency is
approximately 1000 Hz.
Note: Optional to route a
reed-switch signal directly to this input.
LO-F_IN
A reed switch may be connected directly between
this terminal and any
COM
terminal. Maximum
frequency is approximately 150 Hz.
OC_OUT
• This is an open-collector or current-sinking out-
put when NO JUMPER is attached at OUTPUT
P.U.R. location. It can sustain closed-circuit
current of up to 200 mA and open-circuit voltage
of up to 60V.
• This is an active-drive output when the JUMPER
(supplied) is attached at location OUTPUT P.U.R.
The JUMPER applies an internal 10K Ohm resis-
tor as a “pull-up” to the regulated power supply
of 5.5V.
• The output ground circuit may be connected to any
COM
terminal.
• Do not use JUMPER if operating from a battery;
it will cause significantly increased system
current consumption.
• CAUTION: Only use JUMPER when the receiving
equipment has a active-drive input with 5V or less.
COM
All COM terminals are internally connected and may
be used either as NEGATIVE power supply termi-
nals or return terminals for any inputs or outputs.
3
CAUTION