Connections With Internal Valve Options Installed; Figure 4-3. Basic Pneumatic Connections For Units With Zero/Span Valve Option; Table 4-2. Nist-Srm's Available For Traceability Of H2S & So2 Calibration Gases - Teledyne T102 Operation Manual

Pneumatic Connections
Table 4-2. NIST-SRM's Available for Traceability of H2S & SO2 Calibration Gases
NIST-SRM
ZERO AIR

4.1.1.1. Connections with Internal Valve Options Installed

Figure 4-3. Basic Pneumatic Connections for Units with Zero/Span Valve Option

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Teledyne API - T102/501 TRS, Addendum to T101 Operation Manual
4
2730 Hydrogen sulfide in N
2731 Hydrogen sulfide in N
Zero air is similar in chemical composition to the earth's atmosphere but without the
gas(es) being measured by the analyzer, in this case total reduced sulfur (TRS). While
TRS typically includes Hydrogen sulfide (H
disulfide (CH ) S and Methyl mercaptan (MeSH), CH
3 2 2
category as well. Other interferent gases may be present in ambient air as well.
To ensure that high quality zero air is available, a zero air generator such as the TAPI
Model 701 should be used.
If your analyzer is equipped with an IZS option, it is capable of creating zero air that is
adequate for performing informal calibration checks, but a zero air generator such as the
TAPI Model 701 is still recommended for performing formal calibration operations.
Once the appropriate pneumatic connections have been made, check all pneumatic
fittings for leaks using a procedure similar to that defined in the Detailed Pressure Leak
Check section in the T101 Manual - PN 07266.
If your analyzer is equipped with either the zero/span valve option (Option 50) or the
internal zero/span option (Option 51), the pneumatic connections should be made as
shown in Figure 4-3, Figure 4-4, and Figure 4-5.
NOMINAL
TYPE
CONCENTRATION
2
2
S), Dimethyl sulfide (CH
2
5000 ppb
20 ppm
) , Dimethyl
3 2
S many other gases fall into this
4
07267B DCN6485