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Instrument Maintenance
8.3.3.2. Checking the Function of the SO
8.3.3.3. Changing the SO
204
EXAMPLE: If the SO
2
Operational hours
=
Operational hours
=
Operational hours
=
To check to see if your SO
1. With the analyzer set of H
into the sample gas stream that includes SO
least 20% of the reporting range currently selected (see Section 4.4.4.3).
For example, if the analyzer is set for a Single Range & 500 ppb, a
concentration of 1000 ppb would be appropriate.
2. An increase of more than 2% in the H
efficiency of the scrubber is decreasing to the point that the absorbing
material should be replaced.
Scrubber Material
2
Input zero air for 5 minutes
1.
Turn off analyzer
2.
Locates the SO
scrubber cartridge in the front of the analyzer, looks like
3.
2
a big white cylinder (See Figure 3-9).
Undo the two 1/8 inch fittings on the top of the scrubber
4.
Remove the two screws holding the scrubber to the instrument chassis
5.
and remove the scrubber
Take the two Teflon fitting off the instrument.
6.
Empty the SO
scrubbing material in to a hazmat bin
7.
2
Fill each side of the scrubber with new SO
8.
an inch from the bottom of the thread lines so about ½ inches from the
top of the scrubber, do not fill it too high or the fitting will crush the
material.
Remove the Teflon tape from both of the removed fittings, and re-tape
9.
them with new Teflon tape.
10. Install both fittings back onto the scrubber.
11. Put the scrubber back into the analyzer and replace the two screws on
the bottom.
12. Screw the two 1/8 fittings back onto the top of the scrubber, they can be
hooked up either way.
13. Return analyzer to normal operation
concentration is 125 ppb:
1000 ppm/hr ÷ 0.125 ppm
1,000,000 ppb/hr ÷ 125 ppb
8000 hrs
Scrubber
2
scrubber is operating properly:
2
S measurement mode, introduce gas mixture
2
2
Teledyne ML - T101 Operation Manual
at a concentration of at
2
S reading is an indication that the
scrubber material until it is ½
2
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Troubleshooting
