Tabla De Contenido; English; Important Notice - Omega FTB691A Guia Del Usuario

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E N G L I S H

IMPORTANT NOTICE

Use FTB690 Series meters with water and other
chemicals compatible with wetted components
(see Specifications Section). Do not use to
meter fuel or incompatible chemicals. FTB690
Series meters are available with either a local
electronic display, or a conditioned signal
output module to provide a digital signal to
customer interfacing equipment. FTB690
Series meters with computer display measure
in gallons or liters. Refer to the Calibration
Section for details.
These meters are not legal for trade applica-
tions.
FTB690 Series meters are very sensitive to
electric noise if operated within one to two
inches of some electric motors or other sources
of electronic noise.
INSTALLATION
Install your meter in-line either horizontally or
vertically or at the end of the hose adjacent to
the nozzle. Installation to metal connections is
not recommended. Install as follows:
1. Plan to install turbine with a minimum
straight pipe length as follows:
- Upstream from the turbine, allow a mini-
mum straight pipe length of 10 times
the internal diameter of the turbine.
- Downstream from the turbine, allow a
minimum straight pipe length of 5 times
the internal diameter of the turbine.
2. For NPT Fittings wrap all connections with
3 to 4 wraps of thread tape. Make sure the
tape does not intrude into the flow path.
3. Attach meter with arrow pointed in the
direction of flow.
4. For NPT Fittings - Hand tighten the meter
at the housing ends. Do not use a wrench
or similar tool to tighten. This can damage
the housing.
Conditioned Signal Output
Module Wiring
This conditioned signal output module can be
wired to provide an open collector signal output
or 6-volt square wave output.
When installing an FTB690 Series meter, the
correct K-factor must be entered into the readout
device. You can find the K-factor printed on the
turbine body. All K-factors on Omega flowmeters
are calculated in pulses per gallon (PPG).
Open Collector Signal Output
To achieve an open collector signal output,
reference Wiring Diagram 1. The terminal block
is located on the back side of the module. The
module is factory assembled for open collec-
tor signal output. Please provide the (820 ohm
minimum) resistor, if not supplied by receiving
equipment.
Ten feet (3m) of cable is provided with the
module. Trim it to desired length or extend it as
necessary. Distances up to 5,000 feet (1,524m)
can be achieved for open collector signal output.
Square Wave Output
To achieve square wave output, reference Wir-
ing Diagram 2 and use an FLSC790-BATT (sold
separately) for battery power. The terminal block
and battery location are located on the back
side of the module. Access as follows:
1. Remove the four Phillips-head screws from
the front of the module and lift the module
from the turbine.
2. To change terminal block connections,
loosen the appropriate screws. Reconnect
the wires in the proper positions and tighten
the screws.
1