Table Des Matières; English - Omega TM Serie Mode D'emploi

TABLE OF CONTENTS
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E N G L I S H
IMPORTANT NOTICE
Use TM Series meters with water and other
chemicals compatible with wetted components
(see Specifications Section). Do not use to
meter fuel or incompatible chemicals. TM
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. TM 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.
TM 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 TM 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 (3 m) of cable is provided with
the module. Trim it to desired length or
extend it as necessary. Distances up to 5,000
feet (1,524 m) can be achieved for open
collector signal output.
Square Wave Output
To achieve square wave output, reference
Wir-ing Diagram 2.
The terminal block and battery location are
located on the back side of the module
Access as follows:
1. Remove the four Philips 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