Neptune Technology TRICON SmartTrol, Руководство по установке и обслуживанию

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Changing Units of Times
You may choose to display the Rate of flow in another quantity of time such as hours. To
determine the proper K Factor, divide pulses per gallon by the flow rate in gallons per
hour, the calculation is:
Entering a K Factor of 0.0004444 displays the Rate in gallons per hour.
Changing Units of Volume
You may choose to display the Rate of flow in other units of volume such as cubic feet. Just
multiply the gallons K Factor by the appropriate value. In the example, determining the K
Factor for the 4” Trident Turbine Rate in gallons per minute, the K Factor is 0.02667. To
display Rate in cubic feet per minute, multiply by 7.4805, the number of gallons per cubic
foot. The calculation is:
Gallons / minute K Factor x 7.4805 = 0.02667 x 7.4805 = .1995
With the K Factor set to .1995, Rate is displayed in cubic feet per minute for the 4” Trident
Turbine.
Weight
This value represents how much the value of Rate changes as the SmartTrol re-samples
the input pulses to upgrade the Rate displayed. The value can range from 0.0 to 9.9 as the
weighting factor is increased. It is best to adjust this value to suit the application. Initially,
set this value to 0.0. If the display rate changes too often (jitters), then increase the value of
Weight in .1 increments.
Window
This quantity is the number of seconds the ratemeter samples input pulses before making
an update to the value of Rate displayed. The 2- to 24-second “window” selected at setup is
the maximum time the SmartTrol waits for sufficient pulses to make an accurate
calculation before it displays a Rate of “0”. This function is used in some applications with
low flow rates to prevent zero flow from displaying instead of the low value of the actual
flow. For most applications, set the Window value to 5.0.
28 TRICON
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SmartTrol™ Installation and Maintenance Guide
Chapter 9: Using the Worksheet