Section IV. MAINTENANCE AND OPERATIION

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.

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