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Getting Started
Table 3-12: NIST-SRM's Available for Traceability of SO
3.5.7.3. SPAN GAS CONCENTRATION ADJUSTMENTS
3.6. INITIAL OPERATION
66
measurements made with the Teledyne ML T100 UV Fluorescence SO
recommended that you use a span gas with a SO
measurement range for your application.
EXAMPLE: If the application is to measure between 0 ppm and 500 ppb, an appropriate
span gas concentration would be 450 ppb SO
Cylinders of calibrated SO
specifications (also referred to as SRM's or EPA protocol calibration gases) are
commercially available. Table 3-12 lists specific NIST-SRM reference numbers for
various concentrations of SO
NIST-SRM
1693a
1694a
1661a
1
2659a
2626a
2
2745
1
Used to calibrate optional O
2
Used to calibrate optional CO
Some applications, such as EPA monitoring, require a multipoint calibration procedure
where span gases of different concentrations are needed. We recommend using a bottle
of calibrated SO
gas of higher concentration in conjunction with a gas dilution
2
calibrator such as a Teledyne Model T700 (Figure 3-17) This type of calibrator
precisely mixes a high concentration gas with zero air (both supplied externally) to
accurately produce span gas of the correct concentration. Linearity profiles can be
automated with this model and run unattended over night.
If you are unfamiliar with the T100 theory of operation, we recommend that you read
Section 9. For information on navigating the analyzer's software menus, refer to the
menu trees described in Appendix A.1
GENERAL SAFETY HAZARD
Do not look at the UV lamp while the unit is operating. UV light can case eye
damage. Always use safety glasses made from UV blocking material. (Generic
plastic glasses are not adequate).
Teledyne ML - T100 UV Fluorescence SO2 Analyzer
concentration equal to 80% of the
2
.
2
gas traceable to NIST-Standard Reference Material
2
.
2
Calibration Gases
2
Type
Sulfur dioxide in N
2
Sulfur dioxide in N
2
Sulfur dioxide in N
2
O
in N
2
2
CO
in N
2
2
CO
in N
2
2
sensor.
2
sensor.
2
CAUTION
Analyzer, it is
2
Nominal Concentration
50 ppm
100 pp
500 ppm
21% by weight
4% by weight
16% by weight
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