Calibrate The No Channel To The No Calibration Gas - Thermo Scientific 42i Instruction Manual

Calibration
Calibration
Calibrate the NO Channel to the
NO Calibration Gas
Calibrate the NO Channel to the
x
NO Calibration Gas
x
4-12 Model 42i Trace Level Instruction Manual
Use the following procedure to calibrate the NO channel to the NO
calibration gas.
1. Allow the analyzer to sample the NO calibration gas until the NO,
NO , and NO readings have stabilized.
2 x
2. When the responses stabilize, from the Main Menu, choose Calibration
> Cal NO Coefficient.
The NO line of the Calibrate NO screen displays the current NO
concentration. The SPAN CONC line of the display is where you enter
the NO calibration gas concentration.
Use to move the cursor left and right and use
to increment and decrement the numeric character at the cursor.
3. Press to calculate and save the new NO coefficient based on the
entered span concentration.
The NO recorder response will equal:
Recorder R esponse
Where:
URL = Nominal upper range limit of the NO channel, ppm
4. Record the [NO]
OUT
indicated by the recorder response.
Use the following procedure to calibrate the NO
calibration gas.
1. Press to return to the Calibration menu, and choose Cal NOx
Coefficient.
2. Verify that the NO
NO calibration gas concentration plus any known NO
The NO line of the Calibrate NO
x
concentration. The SPAN CONC line of the display is where you enter
the NO calibration gas concentration.
x
[NO
(% scale) =
URL
concentration and the analyzer NO response as
calibration gas concentration is the same as the
x
screen displays the current NO
x
]
OUT
x 100 +
Z
NO
channel to the NO
x
impurity.
2
Thermo Fisher Scientific
x
x