Teledyne 100E Instruction Manual page 34

Getting Started
In applications where the sample gas is received from a pressurized manifold, a vent
must be provided to equalize the sample gas with ambient atmospheric pressure before
it enters the analyzer. The vented gas needs to be routed outside the immediate area or
shelter surrounding the instrument.
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-Hg
above ambient pressure and ideally should equal ambient atmospheric
Attach zero air and span gas supply lines as appropriate (5s 3-5 & 3.7). For this type of
analyzer, zero air and span gas are defined as follows:
Zero air and span gas inlets should supply their respective gases in excess of the 700
3
cc /min demand of the analyzer. Supply and vent lines should be of sufficient length and
diameter to prevent back diffusion and pressure effects.
SPAN GAS
A gas specifically mixed to match the chemical composition of the type of gas being
measured at near full scale of the desired measurement range. In the case of SO
measurements made with the T-API Model 100E 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
(also referred to as SRM's or EPA protocol calibration gases) are commercially available.
Table 3-5 lists specific NIST-SRM reference numbers for various concentrations of SO
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 calibrator
2
such as a T-API Model 700. This type of calibrator precisely mixes a high concentration
gas from 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.
Zero Air
A gas that is similar in chemical composition to the earth's atmosphere but without the
gas being measured by the analyzer, in this caseSO
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 T-API Model 701
can be used..
32
CAUTION
pressure.
gas traceable to NIST-Standard Reference Material specifications
2
Model 100E Instruction Manual
concentration equal to 90% of the
2
in N .
2 2
. If your analyzer is equipped with
2
,
2
Analyzer it is
2
.
2
045150102 Rev XB1