Mount With A Flow-Through Chamber - Emerson Micro Motion Installation Manual

2.4

Mount with a flow-through chamber

Flow-through chambers are manufactured by Micro Motion, and are available with either
weld-prepared ends or with flange or compression fittings for connection into the process
pipelines. They are available with 1- inch NB, 2-inch NB, or 3-inch NB inlet and outlet pipes.
Important
The length of the inlet and outlet pipes must not be altered, otherwise the temperature response
and stability of the fitting may be adversely affected.
Prerequisites
Installations in flow-through chambers are recommended for processes with the following
conditions:
Flow
Viscosity
Temperature
Pressure
Important
•
•
Procedure
See Figure 2-4
Installation Manual
Flow velocity at the pipe wall and fluid viscosity must be within the limits shown to ensure
that the fluid within the pocket is refreshed in a timely manner. This installation will not
respond as rapidly as the free-stream installation to step changes in viscosity.
The thermal mass of the flanges may affect the response time of the meter to temperature
changes.
for an example installation of a meter in a flow-through chamber.
Constant
• 10–30 l/min for 2-inch Schedule 40
calibration bore section
• 5–300 l/min for 3-inch Schedule 80
calibration bore section
0.5 to 1000 cP
–50 °C to 200 °C (–58 °F to 392 °F)
–40 °C to 200 °C (–40 °F to 392 °F) in hazardous
areas
70 bar @ 204 °C, subject to process connections
Mounting
15