Sensia 3300 EFM, Инструкция по установке, эксплуатации и обслуживанию

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Installation Procedure—Remote Mount to Orifice Meter or Cone Meter
A MVT can be mounted remotely and connected to an orifice meter or cone meter with tubing for steam measurement.
The setup of the meter run and plumbing configurations can vary widely, depending upon the challenges existing on lo-
cation.
3/4 in. conduit
connection for
input/output &
communications
Condensate pot (pipe tee
with blowdown valve attached)
Long cold legs protect the
sensor from extreme process
temperatures
Hot legs, insulated to within 1 ft of condensate pot
(1/2 in. diameter recommended)
MVT vent
(use for for filling
cold legs)
Horizontal pole mount provides
clearance for block manifold
Cold legs connect to
manifold (slope to
eliminate air trap)
Figure 2.17 - Remote-mount steam run installation (shown here with a cone meter). The remote-mount method can be
used with an orifice meter as well.
CAUTION When measuring steam, process connections must be designed to eliminate air pockets. This is
achieved by making sure all tubing in the cold legs slopes upward. A side-port MVT and block man-
ifold (shown in
Figure 2.17
) is recommended to help prevent air bubbles from being trapped in the
sensor.
If a bottom-port transducer is used, the bottom process ports must be plugged or replaced with a
drain valve, and side vents must be used for process connections. A block manifold is not recom-
mended for use with bottom port transducers. Contact a Sensia field representative for assistance.
1. Verify that the meter is properly installed in the flow line (per manufacturer’s instructions).
2. Mount the MVT to a 2-in. pipe or to a flat, vertical surface using bolts and the mounting holes in the enclosure. A
horizontal pipe is recommended, as additional hardware may be required for a vertical pipe mount to provide clear-
ance for the manifold block.
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Section 2 Scanner 3300 EFM