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Section IV
MAINTENANCE AND OPERATIION
4.0
INSTALLATION INSTRUCTIONS
Depending upon flow range to be tested, install appropriate sized flowmeter and flow straighteners into
test set-up per Figure 8. Although the transducer may be mounted at any attitude, the recommended installation
is horizontal, with the pick-off coil up, because this is the usual calibration position.
Twelve to fifteen pipe diameters of straight pipe run, upstream of the transducer, is recommended for
maximum accuracy. Five pipe diameters should be provided downstream. Additional straightening vane units
may be used where the straight run upstream must be reduced. Straighteners are provided with the Transfer Kit
to, eliminate any swirl caused by valving or piping configuration. Refer to Section 2.9 for recommended torque
values for installing kit units.
The transducer should be inspected to be certain it is clean, and to see that the rotor rotates freely and
easily. Install the meter in the direction of the flow as indicated on the housing. Over-speeding should be
avoided and prior to start up, check the meter flow rate shown on the data sheet against system flow rate or
pump capacity.
Where particles may be present in the fluid, a filter should be installed ahead of the meter. For 1/2"
meters, 170 mesh size is recommended, for 3/4" and 1", 45 mesh, and for 1 1/2" and larger, 18 mesh.
To protect the meter's internal parts against damage from foreign materials in the pipe line, it is advised
that a perforated metal screen strainer be installed.
Depending upon distance readout is to be made from test set-up, use 50' or 1 50' cable and mate the
flowmeter to the flow indicator per Figure 9. Test unit is now ready for set-up.
4-1

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