Curtis Dyna-Fog CyClone 2730 Operation And Maintenance Manual page 9

6. Hold the meter vertical and allow the liquid to flow through the brass
orifice at the outlet end of the meter into an appropriate container.
7. Using a stopwatch or a watch with a sweep second hand, determine
the FLOWABILITY TIME in seconds that it takes for the liquid level to
fall from the top line to the bottom line.
NOTE: Periodically calibrate the FLOWABILITY METER using plain
water. Water should flow through the orifice such that the time
between the top line and the bottom line is 32 ± 2 seconds.
8. Locate the FLOWABILITY TIME in seconds obtained in step 7 at the
top of Table 1.
9. In the column under the FLOWABILITY TIME, locate the desired
particle size and the corresponding MACHINE FLOW RATE.
10. Move horizontally to the left from the selected flow rate to obtain the MACHINE VALVE SETTING
in the left column.
EXAMPLE 1
The time for the level of the sample of liquid to change from the top line to the bottom line is 39
seconds. This is close enough to the 40 second column to obtain a reasonably accurate output. For
a liquid of this flowability, particle size distributions ranging from 8.1 MMD to 14.4 MMD can be
selected. If a MMD of 11 is selected, the corresponding flow rate is 1.24 ounces/minute. Moving to
the left the applicable MACHINE VALVE SETTING would be "6".
EXAMPLE 2
With the same flowability reading as in example 1, selecting a MMD of 14.4 microns and its
companion flow rate of 1.84 ounces/minute requires a valve setting of 10.
11. Locate the AMOUNT REQUIRED as determined in step 4 at the left of Table 3 and locate the
MACHINE FLOW RATE determined in step 9 at the top of Table 3.
12. Reading across the AMOUNT REQUIRED row and down the machine flow rate column,
determine the APPLICATION TIME in minutes and seconds.
EXAMPLE 1
The machine flow rate for a particular application is determined to be 1.24 ounces per minute. The
nearest value in Table 3 is 1.25 ounces per minute. If the AMOUNT REQUIRED is 6 fluid ounces,
the APPLICATION TIME is 4:48.
EXAMPLE 2
The machine flow rate for a particular application is determined to be 1.36 ounces per minute and the
amount required is 6.5 fluid ounces. The application time can be calculated by dividing the amount
required by the machine flow rate. (6.5 ÷ 1.36 = 4.77 minutes).
Curtis Dyna-Fog, Ltd. 2008
LINE N0. 1
COUNT SECONDS IT TAKES
FLUID TO DRAIN FROM
LINE NO. 1 TO LINE NO. 2
(FLOWABILITY TIME)
LINE NO. 2
Flowability Test
Meter
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