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PR-23 instrucon manual
The veriication of the PR-23 sensor calibration is made using a set of standard refrac-
tive index liquids with the nominal values at 25 °C:
− 1.330
− 1.370
− 1.420
− 1.470
− 1.520
The accuracy of the certiied standard refractive index liquids is ±0.0002 and they can
be traced back to national standards: N.I.S.T Standards # 1823 and # 1823 II.
The repeatability of PR-23 sensor, i.e. the deviation from the latest n
D
calibration, is
within ±0.0002.
As the speciied accuracy of PR-23 is ±0.0002, then the representative level is the sum
of the three accuracy speciications, that is ±0.0004.
K-Patents provides a set of standard R.I. liquids, PR-2300, containing these ive liquids.
The set can be ordered directly from K-Patents or through your nearest K-Patents re-
presentative.
13.1.1 Handling the R.I. liquids
Use gloves and safety glasses or goggles. Make sure the ventilation is good, local venti-
lation is preferable. Please review the safety instructions and the MSDS shipped with
the liquids (valid inside R.I. range 1.30-1.57, safety markings valid in EU/EEA areas).
Do not put tissues or liquid bottles in household waste, dispose of waste according to
local regulations for chemical waste.
13.2 Vericaon procedure
To start the veriication process, select 1 VERIFICATION in the Main menu of your sensor.
The irst veriication display instructs you on the pre-veriication procedure:
Figure 13.2 Vericaon, pre-vericaton checks
When you are inished with the preparations, press CONTINUE (right-most soft key) to
start the veriication process.
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