Emerson 00809-0100-4102 manual Mounting Requirements, Liquid Flow Measurement

Section 3: Installation	Reference Manual
May 2013	00809-0100-4102, Rev AA

Mounting Requirements

Refer to Figure 3-11 on page 43 for examples of the following mounting configurations:

Liquid Flow Measurement

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Place taps to the side of the line to prevent sediment deposits on the process isolators.

Mount the transmitter beside or below the taps so gases vent into the process line.

Mount drain/vent valve upward to allow gases to vent.

Gas Flow Measurement

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Place taps in the top or side of the line.

Mount the transmitter beside or above the taps so to drain liquid into the process line.

Steam Flow Measurement

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Place taps to the side of the line.

Mount the transmitter below the taps to ensure that impulse piping will remain filled with condensate.

Fill impulse lines with water to prevent steam from contacting the transmitter directly and to ensure accurate measurement start-up.

Note

For steam or other elevated temperature services, it is important that temperatures at the Coplanar process flanges must not exceed 250 °F (121 °C) for transmitters with silicone fill, or 185 °F (85 °C) for inert fill. For vacuum service, these temperature limits are reduced to 220 °F (104 °C) for silicone fill and 160 °F (71 °C) for inert fill.

42 Installation