Teledyne 9110EH - Nitrogen Oxides Analyzer - Manual (Page 130)

Calibration Procedures Model 9110EH Instruction Manual
Step three is to perform the converter efficiency calculation procedure:
M-P CAL CONVERTER EFFICIENCY MENU
NO
2
CAL SET EXIT
M-P CAL CE FACTOR: 1.0000 GAIN
1. 0 0 0 0 ENTR EXIT
3x EXIT to return to the
main SAMPLE display.
Wait until the
reading
stabilizes and
the ENTR
button is
displayed
ACTION:
Supply NO
2
span gas to the instrument.
NOTE:
The converter efficiency must be
between 0.9600 and 1.0200,
otherwise the NO
2
converter
needs to be replaced.
When ENTR is pressed, the ratio
of observed NO
2
concentration to
expected NO
2
concentration is
calculated and stored.
Continue from the
CONVERTER EFFICIENCY MENU
(step two above)
M-P CAL CONVERTER EFFICIENCY MENU
NO
2
CAL SET EXIT
M-P CAL CONVERTER EFFICIENCY MENU
NO
2
CAL SET EXIT
M-P CAL CE FACTOR: 0.9852 GAIN
0. 9 8 5 2 ENTR EXIT
SAMPLE RANGE = 500.0 PPB NOX=X.X
< TST TST > ENTR
EXIT
7.2. Manual Calibration
The following section describes the basic method for manually calibrating the Model 9110EH
NO
X
analyzer.
A note on the difference between a calibration and calibration check: pressing the ENTR key
during the following procedures recalculates the stored values for OFFSET and SLOPE
(instrument response curve) and alters the instrument’s calibration. Alternatively, you can
check on the current values and response and then EXIT out of any menu before pressing
the final ENTR key to leave all settings intact (Section 7.3).
116 M9110EH Rev 0