Reference Manual
00809-0100-4004, Rev BA
August 2010
Rosemount 8800D
2-4
High-Temperature Installations
Install the meter body so the electronics are positioned to the side of the pipe
or below the pipe as shown in Figure 2-2. Insulation may be required around
the pipe to maintain an electronics temperature below 185 °F (85 °C).
Steam Installations
For steam applications, avoid installations such as the one shown in Figure
2-3. Such installations may cause a water-hammer condition at start-up due
to trapped condensate. The high force from the water hammer can over
stress the sensing mechanism and cause permanent damage to the sensor.
Upstream/Downstream Piping
The vortex meter may be installed with a minimum of ten diameters (D) of
straight pipe length upstream and five diameters (D) of straight pipe length
downstream.
Rated accuracy is based on the number of pipe diameter from an upstream
disturbance. No K-factor correction is required if the meter is installed with 35
D upstream and 5 D downstream. The value of the K-factor may shift up to
0.5% when the upstream straight pipe length is between 10D and 35D.
Please see Technical Data Sheet (00816-0100-3250) on Installation Effects
for optional K-factor corrections. This effect can be corrected for using the
Installation Effect Correction Factor (See page 4-7).
Figure 2-2. Examples of High-Temperature Installations
Figure 2-3. Avoid This Type of Installation for Steam Applications
The meter body installed with the
electronics to the side of the pipe.
(PREFERRED ORIENTATION)
The meter body installed with the
electronics below the pipe.
(ACCEPTABLE ORIENTATION)
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