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11-4. Setting Conc (User Scale)
In addition to the nD and Brix
(
CH1 to 3
)
scales, this unit is equipped with Conc mode.
This is the User Scale, the feature that allows the user to display the sample Concentration of their choice.
To program a user scale, create a conversion table showing the refractive index of the sample and the
Concentration at various temperatures.
Send the table from a computer to the display section via RS-232C port.
Only one user scale can be programmed in the PRM-
2000α display section at a time.
The user scale can be overwritten and re-programmed.
In case of delete of the user scale, transfer the data table filled with 0.0 in all cells.
The instructions below are for programming a user scale, using Windows XP, Windows Vi sta, Windows 7,
Windows 8 and Windows 10 for RS-232C data transmission.
Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10 are registered trade marks of
Microsoft Corporation in the United States and other countries.
(1)
Items to Prepare
Data table (the refractive index of the sample and the Concentration, according to different
temperatures)
To create a data table, first prepare sample solutions at different Concentrations.
Next, use an accurate refractometer to measure their refractive indices at different temperature points.
Process In-line Refractometer PRM-
2000α (detection section and display section)
Designated RS-232C cable (accessory available for purchase)
Computer (Operating System: Windows XP, Windows 7, Windows 8)
RS-232C-USB serial adapter (for computers without RS-232C ports).