K-Patents PR-33-AC - Manual (Page 41)

8 Troubleshooting 35
© Copyright K-Patents 2014. All rights reserved.
8 Troubleshooting
8.1 Hardware
8.1.1 Message HIGH SENSOR HUMIDITY
Tells that humidity measured inside the instrument exceeds 60 % relative humidity. The
reason may be moisture leaking in through prism seal or the cover being open.
Action: Please contact K-Patents.
8.1.2 Message HIGH SENSOR TEMP
The temperature inside the instrument exceeds 65 °C (150 °F). To read this tempera-
ture, go to the diagnostics page (section 5.3). For action, see Section 3.1, “Choosing
the refractometer mounting location”.
8.2 Measurement
8.2.1 Message OUTSIDE LIGHT ERROR or OUTSIDE LIGHT TO PRISM
Cause: The measurement is not possible or is disturbed because outside light reaches
the camera.
Action: Identify the light source and block the light from getting to the prism at the
sensor tip. The amount of outside light can be seen at BGlight on the diagnostics page.
8.2.2 Message NO OPTICAL IMAGE
There are several possible causes to this message:
1. The prism is heavily coated. Remove sensor from line and clean prism manually.
2. There is moisture condensation in the sensor, see Section 8.1.1.
3. The sensor temperature is too high, see Section 8.1.2.