Mounting; Orientation; Figure 2-3. Recommended Piping Diagram - ABB 3000 Series Instruction Manual

Ac magnetic flowmeters design level a sizes 14 through 24 inches

Hide thumbs Also See for 3000 Series:

Table of Contents

10DS3111A INSTRUCTION MANUAL

2.4 Mounting

The meter may be installed in horizontal, vertical or sloping pipe runs. However, precautions must be

taken to assure that the metering tube is f~d at all times during measurement. A Vertical installation,

with the pipe line carrying liquid upwards assures a filled line under low flow rate conditions and also

minimizes wear on the meter lining by abrasive grit. Horizontal installations should be made with the

meter in the lower section of a pipeline to assure a filled meter condition.

For horizontal or sloping installations the meter should be placed so that the electronic housing of the

meter is on top. This will align the meter electrodes in a lateral plane. Positioning the meter in this

way eliminates the possibility of entrained air acting as an electrode insulator.

The meter must be oriented in accordance with the direction of process flow, as indicated by the

FLOW ARROW on the meter data tag. For accurate metering, a straight pipe run equivalent to a

minimum of three straight pipe diameters are required upstream of the meter, measured from the

center of the meter. See Figure 2-3 for recommended piping diagram.

If a control valve is required, it is recommended that it be placed downstream of the meter. Upstream

valves can create turbulence that result in air pockets and may affect the meter's accuracy or cause

its output to be noisy. A minimum of ten pipe diameters of straight pipe are required upstream

between the meter and a control valve or pump (refer to Figure 2-3).

2-4

Table of Contents

10ds3111