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Functions
7.1 Setting Liquid Parameters
FUH1010 IP65 NEMA 4X Precision Volume
88
Operating Instructions, 01/2013, A5E32122003-AA
5.
Use the keypad numeric keys to enter the desired LiquIdent Index Value.
6.
To enter the LiquIdent Index Value press <ENTER>.
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9LVFF6#
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.
.
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Each of the data points of a Site Liquid Table (maximum of 32) may be filled in by the user
as indicated in the menu screen shown above.
Index Value
The temperature-corrected sonic velocity (LiquIdent) which points to the output variables
forming the balance of the table entry. Below this you may enter the values associated with
that LiquIdent value.
S.G.
The specific gravity of the liquid at system Base Temperature; usually 15ºC (60ºF). Specific
gravity represents the ratio of the liquid density to the density of water at base temperature.
Viscosity
The kinematic viscosity of the liquid at system Base Temperature (units: centistokes).
Visc Slope
The exponent of the logarithmic expression used to project the liquid viscosity at measured
temperature. The default value (-0.0287) has been found to be adequate for many
hydrocarbons.
Viscn = e(VSLP x t + In (Viscb))
where:
γn = Kinematic viscosity at current measured temperature (cS)
e = Base of natural logarithms
VSLP = Viscosity Slope (i.e., -0.0287)
t = Current Measured Temperature minus Base Temperature (degrees F)
Viscb= Visc @ Base Temperature (cS)
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