Other Installation Considerations - Emerson Micro Motion Installation Manual

Planning
1.4

Other installation considerations

Numerous external factors can affect the meter's successful operation. To ensure that your
system works correctly, consider the factors covered in this section when designing your
installation.
1.4.1 Boundary effect
Boundary effect refers to the distortion in the wave forms in the process fluid that are
caused by reflections from the pipe wall. If the pipe wall is within the meter's effective
measurement region, the boundary effect produces measurement inaccuracy.
Figure 1-3:
A.
The factory calibration compensates for the boundary effect. The meter can be calibrated
for 2-inch, 2.5-inch, or 3-inch pipe. If the meter is installed in a pipe that does not match
the calibration size, the compensation will be inaccurate, and process measurement will
be inaccurate.
Verify that the meter was calibrated for the pipe size you plan to use.
4
Region of measurement boundary or sensitivity (plan view)
Sensitive, or effective, region
A
Micro Motion Fork Viscosity Meter