Installing Wafer-Style Flowmeters - GE PanaFlow MV80 User Manual

Chapter 2. Installation

2.2.2 Installing Wafer-Style Flowmeters

Install the wafer-style meter between two conventional pipe flanges of the same nominal size as the flowmeter (see
Figure 6 below). If the process fluid is a liquid, make sure the meter is located where the pipe is always full. This may
require locating the meter at a low point in the piping system.
Note: Vortex flowmeters are not suitable for two-phase flows, such as liquid and gas mixtures.
For horizontal pipelines having a process temperature above 300° F, mount the meter at a 45 or 90-degree angle to
avoid overheating the electronics enclosure. To adjust the viewing angle of the enclosure or display/keypad, see
"Display/Keypad Adjustment (All Meters)" on page 30 and "Enclosure Adjustment (Series MV80 Only)" on page 31.
CAUTION!
hours at full gas flow before installing the flowmeter.
When installing the meter make sure the section marked with a flow arrow is positioned upstream of the outlet, with the
arrow head pointing in the direction of flow. (The mark is on the wafer adjacent to the enclosure mounting neck.) This
ensures that the sensor head is positioned downstream of the vortex shedder bar and is correctly aligned to the flow.
Installing the meter opposite this direction will result in completely inaccurate flow measurement.
12
Enclosure and
display/keypad
are adjustable to suit
most viewing angles.
Shedder bar (bluff body)
is positioned upstream
of the sensor.
FLOW
Figure 6: Wafer-Style Flowmeter Installation
When using toxic or corrosive gases, purge the line with inert gas for a minimum of four
Incorrect gasket position!
Do not allow any gasket
material to extend into
the flow profile.
PanaFlow™ MV80 & MV82 User's Manual