Teledyne T101 Manuel d'utilisateur Page 46

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Getting Started Teledyne API – T101 Operation Manual
44
Table 3-9. NIST-SRM's Available for Traceability of H
2
S & SO
2
Calibration Gases
NIST-SRM
4
TYPE
NOMINAL
CONCENTRATION
2730
2731
Hydrogen sulfide in N
2
Hydrogen sulfide in N
2
5000 ppb
20 ppm
1693a
1694a
1661a
Sulfur dioxide in N
2
Sulfur dioxide in N
2
Sulfur dioxide in N
2
50 ppm
100 ppm
500 ppm
ZERO AIR
Zero air is similar in chemical composition to the earth’s atmosphere but without the gas
being measured by the analyzer, in this case H
2
S. If your analyzer is equipped with an
IZS or external zero air scrubber option, it is capable of creating zero air.
For analyzers without these options, a zero air generator such as the Teledyne API Model
701 can be used.
Once the appropriate pneumatic connections have been made, check all pneumatic fittings
for leaks using a procedure similar to that defined in Section 9.5.1.
07266B DCN6485
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