Dynasonics 701_771C Series Insertion Ultrasonic Flow Meter - Manual (Page 19)

Rev. 12/97 -18- D77X
CAUTION: Do Not Force the Probe Tip Against the "Ball",
damage to the probe tip may result.
2. Replace the upper Jam Nuts ( 2 on each rod) and the
cotter pins. The nuts should be run down to the top side
of the retaining collar and the cotter pins replaced. Orient
the probe in the direction of flow as indicated on by the
FLOW direction arrow located on the top of the probe
flange. See Figure 5. Lock the probe in position with the
enclosed allen wrench.
CAUTION: The nuts on both ends of the retaining
rods must always be in place as a safety measure to
prevent possible probe blow out. Inserting cotter pins is a
further safety measure.
3. Slowly open the isolation valve. When the valve is fully
open, use the proper size wrench on the insertion nuts,
alternately tightening each nut about two complete turns
to avoid uneven seal loading.
NOTE: For some low pressure\low temperature (less
than 30 PSIG and less than 100 o F (38 o C) the probe may
be pushed in by hand to decrease the insertion time.
PART 2 - TRANSDUCER INSTALLATION
Figure 5