K-Patents PR-21-S - Manual (Page 126)

120 PR-21-S instruction manual
checking that it is smooth and glossy without any scratches. Then go back to the
Verification step 2 by pressing soft key
REPEAT and repeat the whole verification
procedure.
You may want to double-check the following, as they are the most common reasons
for a failure of the verification:
− Insufficient cleaning of the prism.
− Too old calibration liquids
− Bad temperature control (changing temperature)
Figure 12.9 Verification failed
If verification fails even on the repetition of the verification procedure, fill in
the PR-21-S sensor verification form (available in Appendix
?? and send it to
K-Patents or your nearest K-Patents representative or email the collected infor-
mation to <[email protected]> and wait for further instructions.
For the sensor verification form, you need to collect data from the Verification step
2 display and the Verification results display. The sensor’s serial number is shown
in the upper right corner of each display. The measured n
D
(RI) is given when VERIFY
has been pressed in Verification step 2. The list of CCD and TEMP values are found on
the verification results display, see (Figure 12.10)
Figure 12.10 Finding verification information for PR-21-S sensor verification form