Teledyne 6200E - Sulfides Analyzer - Manual (Page 195)

Model 6200E Instruction Manual Instrument Maintenance
M6200E Rev: A1 195
9. Measure the amount of SO
2
in the sample gas.
• If your M6200E has the multigas measurement options activated, this can be done by
following instructions found in Section 6.8.1 and selecting MEASURE MODE = SO
2
.
• Let the analyzer operate for 30 minutes, then note the SO
2
concentration.
10. Divide 1 000 by the SO
2
concentration.
EXAMPLE: If the SO
2
concentration is 125 ppb:
Operational hours = 1000 ppm/hr ÷ 0.125 ppm
Operational hours = 100 000 ppb/hr ÷ 125 ppb
Operational hours = 8000 hrs
9.3.3.2. Checking the Function of the SO
2
Scrubber
To check to see if your SO
2
scrubber is operating properly:
11. With the analyzer set of H
2
S measurement mode, introduce gas mixture into the sample gas
stream that includes SO
2
at a concentration of at least 20% of the reporting range currently
selected (see Section 6.7.3). For example, if the analyzer is set for a Single Range & 500 ppb,
a concentration of 1000 ppb would be appropriate.
12. An increase of more than 2% in the H
2
S reading is an indication that the efficiency of the
scrubber is decreasing to the point that the absorbing material should be replaced.
9.3.3.3. Changing the SO
2
Scrubber Material
1. Input zero air for 5minutes
2. Turn off analyzer
3. Locates the SO2 scrubber cartridge in the front of the analyzer, looks like a big white cylinder
(See Figure 3-9).
4. Undo the two 1/8 inch fittings on the top of the scrubber
5. Remove the two screws holding the scrubber to the instrument chassis and remove the
scrubber
6. Take the two Teflon fitting off the instrument.
7. Empty the SO 2
scrubbing material in to a hazmat bin
8. Fill each side of the scrubber with new SO2 scrubber material until it is ½ an inch from the
bottom of the thread lines so about ½ inches from the top of the scrubber, do not fill it to high
or the fitting will crush the material.
9. Remove the Teflon tape from both of the removed fittings, and re-tape them with new Teflon
tape.