Thermo Scientific DensityPRO NAI Series, Руководство пользователя

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Density Calculation
Solution Material
C-26 DensityPRO User Manual Thermo Scientific
Solution
Calculation
When the process material is a solution the gauge will be able to calculate the density
of the material and provide information on the solvent and solute.
The density for a solution material should be calculated using Equation 4 . Initially, the
slope correction factor will be 1. When a second calibration point is used, use Equation
3 to calculate the slope correction factor. The user has the option to modify or
recalculate the slope correction factor at any time.
The parameters below are used to calculate the density of a solution material.
– Constants

G: Geometry factor (Default = 0.85) – The geometry factor does not have any
units. It is used to correct for the location of the source relative to the detector
with different source heads and mounting configurations. History has
determined that this value can be a constant.
– User Inputs

Material Type – The user has the option of selecting any of the following
material types.

Single-Phase

Slurry

Emulsion
 Solution
This section only applies to the selection of Solution for the material type.

Primary Measurement – When the user selects a material type of solution, the
following options are available for the primary measurement.
 Density – The density of the solution is calculated using equation (4).
The value shall be displayed in the unit’s selected from the list in
Units for
Measurement #1 . Some of the terms of Equation 4 are redefined for a
solution.

Dc – Density of the solvent

µc – Attenuation Coefficient of the solvent

Ds – Density of the solute

µs – Attenuation Coefficient of the solute

Solute content/volume – Solute content per volume is calculated using a
fourth order polynomial.

D = density of the solution from Equation 4 (g/cc)

Dc = density of solvent (g/cc)

Ddiff = difference in solution density and solvent density (g/cc)