PN25080 Vortex Meter (TRIO-WIRL V) 3 - 5
TRIO-WIRL INSTRUCTION MANUAL
3.4 Installation
3.4.1 Inspection
All equipment should be inspected for damage that
may have occurred during shipment. All damage
should be reported to the shipping agent. If the equip-
ment is damaged to the extent that faulty operation
may result, contact ABB Inc. before installation. Always
reference the complete instrument serial number and
model number in all correspondence concerning the
equipment supplied.
3.4.2 Location & Mounting
3.4.2.1 Installation
The Vortex meter may be installed at virtually any loca-
tion in the pipeline. The meter may be installed at any
angle and is available in either a wafer-style or
flange-style body that mounts between adjacent pipe
sections of the process piping. Since the meter is unidi-
rectional, it must be oriented in accordance with the
direction of the process flow. A flow direction arrow is
provided on the meter body to assure correct orienta-
tion.
Take care to observe the following guidelines:
* Do not exceed the ambient temperature require-
ments
* Observe the recommended inlet and outlet straight
sections piping requirements (Refer to Figure 3-4).
* Make sure the flow direction corresponds to the
direction indicated by the arrow on the flowmeter
primary.
* Make sure that the required minimum distance for
removing the converter and exchanging sensors is
provided.
* The inside diameters of the flowmeter primary and
the pipeline should be identical.
* Pressure fluctuations at zero flowrate in long pipe-
lines should be eliminated by installing intermedi-
ate gate valves.
* Flow pulsations resulting from piston pump or com-
pressor operation should be reduced by using
appropriate dampeners.
* When metering liquids, the flowmeter primary must
always be completely filled with fluid and cannot
drain.
* For high fluid temperatures the flowmeter primary
is installed so that the electronic assembly is
mounted at the side or bottom of the flowmeter
(Refer to Figure 3-12).
* If the possibility of gas bubble formation exists, gas
separators should be provided.
* Assuming a properly supported pipeline and the
converter’s DSP signal processing technology,
vibration problems should not be encountered in
normal industrial applications. However, it is good
practice to minimize mechanical vibrations using
supports if required. When installing in long pipe-
lines which have a tendency to vibrate, eliminators
should be installed upstream and downstream of
the flowmeter.
* In vertical and sloping installations, the electrical
conduit entries should face downward to retard the
entry of condensation.
3.4.2.2 Recommended Inlet & Outlet Sections
Due to the measurement principles of the Vortex Flow-
meter it can be installed with minimal inlet and outlet
straight section lengths. Strainers and flow straighten-
ers are not required. Figure 3-4 shows the recom-
mended lengths for the inlet and outlet straight sections
for various installation conditions. No inlet and outlet
straight sections are required when single or double
elbows are installed upstream or downstream from the
flowmeter primary when the radius of the elbow is
greater than 1.8 x D.
To assure optimum meter performance, the meter
should be installed in accordance with the upstream
and downstream straight run piping requirements
shown in Figure 3-4. The straight run piping should be
schedule 80 or lighter pipe. Process flanges should be
raised face.
Remove the covers used to protect the meter inlet and
outlet surfaces from damage during shipment.
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