Teledyne 201A Manuel d'utilisateur télécharger pdf (Page 11)

Teledyne API Model 201A NH

Analyzer Instruction Manual, 04689, Rev. B1

2.0 CALIBRATION PROCEDURE

Calibration of the M201A is done by first calibrating the TN and TNx channels with NO

span gas diluted with zero air. In the second phase of calibration, ammonia span gas is

introduced to measure the overall system efficiency for NH3 conversion. Unlike NOx

analysis, the NH3 converter efficiency must be measured because it is considerably

lower than 100% and may change as the converter ages.

If the instrument is configured as a basic model, all zero/span gasses are introduced

through the sample port. If the Zero/Span valves option or the ECO option is ordered,

the zero/span gas is introduced through the zero/span valves. There are several ways

of automating the calibration or span check process, they are covered in Section 7 of

the M200A manual. After reviewing the procedure described below, it should be simple

to adapt the procedures in Section 7 to the M201A, if necessary.

2.1 Zero/Span Calibration – Basic Instrument

Since the zero gas concentration is defined as 0 ppb, it is not necessary to enter the

expected zero value.

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Teledyne 201A Manuel d'utilisateur Page 11