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Calibration Procedures
5.4. CALIBRATION CHECKS
STEP ONE:
STEP TWO:
Analyzer display
continues to cycle
through all of the
available gas
measurements
throughout this
procedure.
Wait until NOX STB
falls below 0.5 ppm.
This may take several
minutes.
192
Informal calibration checks, which only evaluate but do not alter the analyzer's response
curve, are recommended as a regular maintenance item and in order to monitor the
analyzer's performance. To carry out a calibration check rather than a full calibration,
follow these steps.
Connect the sources of zero air and span gas as shown in Figure 5-2 or Figure 5-3.
Perform the zero/span calibration check procedure:
SAMPLE
A1:NXCNC1=100PPM
< TST
TST >
CAL
Toggle TST> button until ...
SAMPLE
NOX STB= XXX.X PPM
< TST TST >
CAL
Allow zero gas to enter the sample port
at the rear of the analyzer.
Record NO
Allow span gas to enter the sample port
at the rear of the analyzer.
Record NO
Teledyne API - Model T200H/T200M Operation Manual
NOX=XXX.X
NOX=XXX.X
, NO, NO
or O
zero point
X
2
2
readings
, NO, NO
or O
span point
X
2
2
readings
Set the Display to show
the NOX STB test
SETUP
function.
This function calculates
the stability of the NO/NO
measurement
SETUP
Wait until NOX STB
falls below 0.5 ppm.
This may take several
minutes.
The ZERO and/or SPAN
keys will appear at various
points of this process.
It is not necessary to press
07270D DCN7141
x
them.
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