Teledyne 501 TRS, Operation Manual, Page: 71 / 111

Teledyne API - T102/501 TRS, Addendum to T101 Operation Manual TROUBLESHOOTING and REPAIR
69
3. Supply a gas with a known concentration of SO
2
to the sample gas inlet
of the analyzer.
4. Wait until the analyzer’s output concentration measurement stabilizes.
This can be determined by setting the analyzer’s display to show the
TRS STB test function (see the Test Functions section in the T101
Manual - PN 07266). TRS STB should be 0.5 ppb or less before
proceeding.
5. Record the stable SO
2
concentration (although the concentration is
labeled TRS, we are measuring SO
2
).
6. Supply a gas with a concentration of H
2
S equal to that of the SO
2
gas
used in steps 2 through 5 above, to the sample gas inlet of the
analyzer.
7. Wait until the analyzer’s output concentration measurement stabilizes.
This can be determined by setting the analyzer’s display to show the
TRS STB test function (see Section 6.2.1 of the T101 manual). TRS
STB should be 0.5 ppb or less before proceeding.
8. Record the stable TRS concentration.
9. Divide the TRS concentration by the SO
2
concentration.
EXAMPLE: If the SO
2
and TRS concentration of the two test gases used
is 500 ppb:
Measured SO
2
concentration = 499.1 ppb
Measured TRS concentration = 490.3 ppb
Converter Efficiency = 490.3 ÷ 499.1
Converter Efficiency = 0.982 (98.2%)
07267B DCN6485