Waters 2414, Overview And Maintenance Manual

Page: 72 / 130

June 11, 2015, 715004754 Rev. A
Page 72
Figure 5–6: Secondary functions of the RIU mode home screen
From the home screen, or by pressing the Next key, you can access the following
functions:
• RIU-FS (refractive index units full scale) – The refractive index output signal is
defined by the following relationship:
RIU OUT
=
Δ
n* (2 Volts / RIU FS)
The RIU-FS range is 500 to 1 µRIU (default is 500).
The RIU Full Scale setting is a parameter used to generate an analog output
voltage (detector output) with the appropriate scaling factor. The value,
expressed in µRIU, corresponds to the RI value at which the analog outputs will
saturate at their full scale values. A RIU-FS setting of 500 µRIU means that a
±500 µRIU signal will generate a ±2 V output signal. RIU-FS does not affect the
value displayed on the front panel.
Warning:
Changing the Refractive Index Units Full Scale (RIU-FS)
setting affects the 2-V Detector output.
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