Table 7-12: Zero Calibration - Teledyne 200A Instruction Manual

Teledyne API Model 200A NO
7.8.5.1 Zero Calibration Procedure
Since the zero gas concentration is defined as 0 ppb, it is not necessary to enter the expected zero
value. The following Table 7-12 details the zero calibration procedure.
Table 7-12: Zero Calibration Procedure
Step Number
1.
2.
3.
4.
5.
7.8.5.2 NO/NO
Adjust the NO concentration to approximately 80% of the URL of the NO channel. The expected
NO and NO span concentrations can be determined by measuring the cylinder and diluent flows
x
and computing the resulting concentrations. If there is any NO
it should be taken into account when the NO
channel calibration. This is done by ADDING the impurity concentration to the NO
concentration to get the NO
concentrations as follows:
F
[NO =
]
OUT
procedure in Table 7-13. The expected span concentrations need not be re-entered each time a
calibration is performed unless they are changed.
Enter the expected NO
Analyzer Instruction Manual, 02246, Rev. F1
X
Action
Press CAL
Wait 10 min
Press ZERO
Press ENTR
Press EXIT
Calibration Procedure
x
concentration for calibration. Calculate the exact NO and NO
x
x [NO
]
NO
STD
Equation 7-8 Enter the respective concentrations using the
F
T
and NO span gas concentrations:
x
Comment
The M200A enters the calibrate mode from sample mode.
NOTE:
The analyzer does not operate the zero/span valves in this mode,
the zero gas enters through the sample port.
Wait for reading to stabilize at the zero value.
If you change your mind after pressing ZERO, you can still
press EXIT here without zeroing the instrument.
Pressing ENTR actually changes the calculation equations.
M200A returns to the SAMPLE mode.
concentration is entered during the NO/NO
x
7-22
impurity in the NO standard gas
2
x
x