Teledyne 102E Additional and Updated Maintenance Procedures, Maintaining the SO2 Scrubber, Rev A1

INSTRUMENT MAINTENANCE	M102E/M501 TRS
	(Addendum to M101E Manual - P/N 04740 Rev A)

8.1. Additional and Updated Maintenance Procedures

The following procedures need to be performed regularly as part of the standard maintenance of the Model 102E.

8.1.1. Maintaining the SO2 Scrubber

This section REPLACES Section 9.3.3 of the M101E Manual - P/N 04740 Rev A.

Unlike the M101E which includes an internal scrubber to remove SO2 from the sample gas before the H2S Æ SO2 conversion takes place, the M102E relies on the SO2 scrubber of the M501-TRS to perform the same function.

The SO2 scrubber of your M501-TRS utilizes a consumable compound to absorb SO2 from the sample gas before the TRS is converted to SO2. This material must be replaced periodically in order for the analyzer to continue measuring TRS accurately and reliability.

This material is capable of efficiently scrubbing SO2 for up to 1000 ppm-hours. This means that if the SO2 content of the sample gas is typically around 100 ppb, the scrubber will function for approximately 10,000 hours, a little over 13 months. If, however, the typical ambient SO2 level of the sample gas is 250 ppb, the scrubber would only last for approximately 4000 hours or about 5 ½ months.

8.1.1.1. Predicting When the SO2 Scrubber Should Be Replaced.

To determine how long the SO2 scrubber will operate efficiently:

1.Measure the amount of SO2 in the sample gas.

•If your M102E has the multigas measurement options activated, this can be done by following instructions found in Section 6.8.1 of the M101E Manual (P/N 04740 Rev A) and selecting MEASURE MODE = SO2.

•Let the analyzer operate for 30 minutes, then note the SO2 concentration.

2.Divide 1 000 by the SO2 concentration.

EXAMPLE: If the SO2 concentration is 125 ppb:

Operational hours	=	1000 ppm/hr ÷ 0.125 ppm
Operational hours	=	100 000 ppb/hr ÷ 125 ppb
Operational hours	=	8000 hrs

40 05514 Rev A1