7. Troubleshooting
The following chapter discusses refractometer error messages and other error conditions. To
view the error messages you need Web user interface WI, Compact user interface CI, or
Multichannel user interface MI. The error messages are visible on the main page/display on the
user interface.
A status message is always shown. However, message
Normal operation
means
that there are no errors.
7.1 Diagnostic message priorities
The messages are listed in descending order of priority. For example, if both
NO
OPTICAL IMAGE
and
TEMP MEASUREMENT FAULT
are activated, only
NO
OPTICAL IMAGE
displays.
•
OUTSIDE LIGHT ERROR
•
NO OPTICAL IMAGE
•
TEMP MEASUREMENT FAULT
•
HIGH SENSOR HUMIDITY
•
HIGH SENSOR TEMP
•
NO SAMPLE
•
PRISM COATED
•
OUTSIDE LIGHT TO PRISM
•
LOW IMAGE QUALITY
•
Normal operation
The following sections list the diagnostic messages, their causes and corrective actions.
7.2 Hardware
The following table describes the hardware messages and their related actions.
Table 3 Hardware messages
Message
Description
Corrective action
HIGH INTERNAL
HUMIDITY
Tells that humidity measured inside
the refractometer exceeds 60 %
relative humidity. The reason may be
moisture leaking in through prism seal
or the cover being open.
Contact Vaisala.
PR-43 Series User Guide
M212455EN-B
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Summary of Contents for K-PATENTS PR-43
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