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F-2600 & F-2700 Vortex Flow Meter Manual 02/15 - 0808-7 / 19204 Page 22

2.2.1 Wafer-Style Flow Meter Installation

Install the wafer-style meter between two conventional pipe anges of the same nominal

size as the ow meter. If the process uid 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 ow meters are not suitable for two-phase ows (i.e., liquid and gas

mixtures). For horizontal pipelines having a process temperature above 300° F, mount the

meter at a 45 or 90 angle to avoid overheating the electronics enclosure. To adjust the

viewing angle of the enclosure or display/keypad, see page 34 and 35.

Figure 6. Wafer-Style Flow Meter Installation

When installing the meter make sure the section marked with a ow arrow is positioned

upstream of the outlet, with the arrow head pointing in the direction of ow. (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

ow. Installing the meter opposite this direction will result in completely inaccurate ow

measurement. To install the meter:

1. Conrm that the installation site meets the required minimum upstream and

downstream pipe diameters. Turn off the ow of process gas, liquid or steam. Verify

that the line is not pressurized.

2. Insert the studs for the bottom side of the meter body between the pipe anges. Place

the wafer-style meter body between the anges with the end stamped with a ow arrow

on the upstream side, with the arrow head pointing in the direction of ow. Center the

meter body inside the diameter with respect to the inside diameter of the adjoining

piping.

3. Position the gasket material between the mating surfaces. Make sure both gaskets are

smooth and even with no gasket material extending into the ow prole. Obstructions

in the pipeline will disturb the ow and cause inaccurate measurements.

4. Place the remaining studs between the pipe anges. Tighten the nuts in the sequence

shown in Figure 5. Check for leaks after tightening the ange bolts.

CAUTION

When using toxic or corrosive gases, purge the line with inert gas for a minimum of four hours at

full gas ow before installing the ow meter.

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