PT_COMP quick config parameters

The absolute pressure conversion factor. The value required to convert the gauge pressure to absolute pressure, in engineering units. The default value is 14.7.

The absolute temperature conversion factor. The value required to convert the temperature to degrees Rankine or Kelvin. If the temperature is measured in degF, use 459.69; if degC, use 273.16. The default value is 459.69.

The compensation high limit. The default value is 1.1, which limits the maximum compensated flow to ten (10) percent higher than the measured flow.

The compensation low limit. The default value is 0.9, which limits the minimum compensated flow to ten (10) percent lower than the measured flow.

The compensation type. Can be either Pressure, Temperature, or both. The default is both Press-Temp.

The density intercept value. Represents the intercept of the density curve. Used in calculating the actual density of the liquid when the FLUID parameter is set to Liquid. The default value is 63.27. The default value is for water with temperature measured in degrees Fahrenheit (degF).

The density slope value. Represents the slope of the density curve. Used in calculating the actual density of the liquid when the FLUID parameter is set to Liquid. The default value is -0.015. The default value is for water with temperature measured in degrees Fahrenheit (degF).

The fluid type. Select either Gas or Liquid. The default value is Gas.

The flowmeter type. The default value is Differential Pressure (Diff Press). Select the flowmeter type as either Differential Pressure or Mass Flow. The compensation factor is a square root function whenever the meter type is Diff Press. You must linearize the flow prior to this block if the meter type is differential pressure, for example, either in the field device or AI function block.

The flowmeter calibration density. Enter the flowmeter calibration density. Temperature compensation of flow is done using a linear relationship between temperature and density. The actual density is calculated from temperature using the slope (DENSITY_M) and intercept DENSITY_B) of the linear relationship. The default values are for water with temperature measured in degrees Fahrenheit (degF). If the liquid is not water or units are not degF, enter values for the slope and intercept. The default value is 62.37.

The flowmeter calibration pressure. Enter the calibration pressure if the COMP parameter is set to Pressure or Press-Temp. This value is expected to be relative, for example, PSIG as opposed to PSIA. The calibration pressure should be in the same units as the measured pressure. The default value is 50.

The Flowmeter Calibration Temperature. Enter the calibration temperature if the COMP parameter is set to either Temperature or Press-Temp. This value is expected to be relative, for example, DEG C as opposed to DEG K. The flowmeter calibration temperature should be in the same units as the measured temperature. The default value is 60.