Emerson Process Management 2090 manual Impulse Piping, Rosemount 2088 and, Reference Manual

Rosemount 2088 and 2090

Reference Manual

00809-0100-4690, Rev EA March 2007

Impulse Piping

Figure 3-3. Transmitter Mounting Configurations for Liquids, Gases, and Steam

Impulse piping configurations depend on specific measurement conditions. Use the following information and Figure 3-3 as a guideline when installing impulse piping.

Liquids: Make the line tap on the side of the pipe to prevent sediment deposits from plugging the impulse line or transmitter. Mount the transmitter level with or below the tap so gases vent into the process line.

Gases: Make line taps on either the top or the side of the process line. Mount the transmitter level with or above the line tap so liquids drain into the process line.

Steam: Make line taps in the side of the process line. Mount the transmitter below the line tap to ensure that the impulse line remains filled with condensate.

NOTE

Installing a “T”-connection with a shut-off valve in the impulse line between the transmitter and the valve to the process line will allow you to vent the transmitter to atmosphere, thereby enabling calibration without removing the transmitter.

GAS OR LIQUID

SERVICE

LIQUID OR STEAM

SERVICE

GAS

SERVICE

NOTE

In steam or other high-temperature services, the temperature at the process connection must not exceed the process temperature limit of the transmitter, which is 250 °F (121 °C).

In steam service above 250 °F (121 °C), fill impulse lines with water to prevent steam from contacting the transmitter. Condensate chambers are not necessary since the volumetric displacement of the Rosemount 2088

is negligible.

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