Measurement Interferences; Figure 6-4. Pneumatic Flow During The Auto Zero Cycle; Table 6-1. List Of Interferents - Teledyne T200 User Manual

M
EASUREMENT
Interferences in the chemiluminescence method come from a number of sources. The
analyzer has been successfully tested for its ability to reject interference from most of these
sources. Table 6-1 lists the most common types of interferents that could affect the
analyzer's performance.

Table 6-1. List of Interferents

GAS INTERFERENCE TYPE
Dilution: Viscosity of CO
collect in aperture of Critical Flow Orifice altering flow
rate of NO.
CO
2
3 rd Body Quenching: CO
NO * molecules absorbing excess energy kinetically
2
and preventing emission of photons.
083730200A DCN7962

Figure 6-4. Pneumatic Flow during the Auto Zero Cycle

I
NTERFERENCES
molecules causes them to
2
molecules collide with
2
Teledyne API T200 NO/NO
REJECTION METHOD
If high concentrations of CO
special calibration methods must be performed to
account for the effects of the CO
Contact Teledyne API's Technical Support
Department (Section 5.9) for details.
/NO Analyzer with NumaView™ Software
2 x
are suspected,
2
.
2
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