Procedure For Cleaning And Balancing The Sensor Mirror - GE OptiSonde User Manual

October 2007
Procedure for Cleaning
and Balancing the Sensor
Mirror
5-2
When necessary, use the procedure below to clean and balance the
sensor mirror. To clean the mirror, you will require the MSK-2
Maintenance Kit, which includes essential supplies:
•
Cotton swabs
•
Screwdriver or hex driver for some sensors
•
Cleaning solution
1. From the OptiSonde analyzer, press the
Function window appears. Press the up arrow key to reach HEAT.
2. Allow the dew point temperature (mirror temperature) to attain the
maximum value.
3. To clean the mirror:
a. Remove the cap or open the cover of the chilled mirror sensor.
b. Put one drop of cleaning solution on a cotton swab.
c. Gently rub the cotton swab on the mirror in a circular motion
(spiral outwards) to clean the mirror.
d. Use a dry swab to dry and buff the mirror. The mirror should be
bright and shiny.
e. Discard the used swabs.
IMPORTANT:
If the contamination is severe, then solvents such as
alcohol, acetone or hexane may be used, followed by
a rinse of the cleaning solution then distilled water.
Be sure to dry and buff the mirror with a dry swab.
4. Observe the balance indicator. For a dry, clean, balanced mirror,
the bar should be at the midpoint of the scale, as shown in Figure
5-2a below. A wet mirror will have a bar similar to Figure 5-2b,
and a mirror requiring bias adjustment will appear similar to
Figure 5-2c below. Adjust the bias screw to move the gray block
as close as possible to the solid center block.
(a) Balanced Mirror
Figure 5-2: Balance Indicator for Various Mirror Conditions
ENT
key. The Select
(b) Wet Mirror
(c) Mirror Requiring
Bias Adjustment
Maintenance