Ronan X96S DENSITY GAGE - Manual (Page 20)

Density Gage Manual 012407 16
ITEM FUNCTION
Table Entry # Shows and allows the user to select an entry in the linearization table
Entry Used Shows if the entry is used or not.
Measured Shows and allows the user to set the measured value associated with this linearization
table entry. This is a value calculated by the X96S.
Actual Shows and allows the user to set the actual value associated with this linearization
table entry. This value is the result of a lab sample, and compares to the Measured
value above.
Set Entry This invokes a method that sets a table entry
Remove Entry This invokes a method that removes a table entry
Temp Comp Menu
Temperature compensation in the X96s is calculated as a quadratic function 4 . If temperature compensation is to be used, the
process temperature can be captured automatically for you during Referencing by enabling Temp Auto Cap. If you choose to
enter the temperature manually, the entered value should be the temperature of the process material during the Referencing
function.
Process temperature is typically read via platinum or nickel, 2 or 3-wire RTD attached to the X96S. In these cases, the X96S needs
no temperature calibration. You can optionally feed a 0-10volt or 4-20mA signal into the X96S from another source that
represents the range of temperature for your process. In this case, you will need to perform a Temp Ref to set the range of
measurement. You will also need to define the type of temperature device you are using in the Hardware Menu, Proc Temp
menus.
The Temp Comp menu is used to control the temperature compensation mechanism 4 . It contains the following items:
ITEM FUNCTION
Temp Comp Shows the current state of the temperature compensation mechanism (enabled or
disabled) and allows the user change the state.
Temp Units Shows and allows the user to set the temperature units used to by the temperature
compensation mechanism.
A Coeff Shows and allows the user to set the “A” coefficient that relates temperature to
changes in density.
B Coeff Shows and allows the user to set the “B” coefficient that relates temperature to
changes in density.
Enter Temp Shows and allows the user to set the process temperature at the time that the gage was
Referenced (if Auto Cap was ‘enabled’ during Referencing).
Temp Auto Cap This invokes a method that captures the process temperature automatically during gage
Referencing.
Last Ref Temp Shows the temperature of the process at the time the last reference was completed
Temp Units is one of the following:
ITEM MEANING
degC degrees Celsius
degF degrees Fahrenheit
degR degrees Rankine
Kelvin degrees Kelvin
Pressure Comp Menu
Pressure compensation is calculated based on the pressure input. The pressure-input range is selected in the Pressure Config
Menu, Hardware Menu, and the Pressure Reference Menu.
The Pressure Comp menu is used to control pressure compensation mechanism 5 . It contains the following items:
4 compensated density = uncompensated density + (A Coeff * temperature delta) + (B Coeff * temperature delta 2 )
5 compensated density = uncompensated density + (A Coeff * pressure delta)