Campbell Scientific PWC100 Present Weather Sensor Calibrator - Manual (Page 11)

PWC100 Present Weather Sensor Calibrator
Step 2: Performing the visibility maximum limit check
• Remove the PWC100 visibility calibration disk and place it back into its
box.
• Place blanking plug into upper sensor head as shown in diagram above.
• At this point, LED L and LED C should be flashing slowly.
• Once you are ready, press START.
• LED L and LED C will be illuminated for the duration of the test. This
test will take approximately two minutes.
• Upon successful completion of the test, LED C will be flashing slowly.
This indicates the end of the visibility test.
• Remember to remove the blanking plug from the PWS before continuing.
(This is important!)
At this point, steps three through five can be ignored if only the visibility
calibrations are required.
To view the visibility test results alone, press the RESET/DONE button. This
will jump the unit to the end of the tests and will display the results in the
normal way detailed at the end of the calibration section (this is the only stage
in the tests where pressing the RESET/DONE button will not restart the tests).
Please remember to read the final section relating to tidying up and ensuring all
screws and fasteners are returned to their original positions.
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