Teledyne 9110EH - Nitrogen Oxides Analyzer - Manual (Page 138)

Calibration Procedures Model 9110EH Instruction Manual
• Perform the zero/span check. Zero and span checks using the zero/span valve or
IZS option are similar to that described in Section 7.3, except:
On units with an IZS option installed, zero air is supplied to the analyzer through the zero
gas inlet and the same gas stream is used to create span gas internally using the permea-
tion device.
On units with a zero/span valve option installed, zero air and span gas are supplied to the
analyzer through the zero gas and span gas inlets from two different sources.
The zero and calibration operations are initiated directly and independently with dedicated
keys CALZ and CALS.
Note that there is no option to use a dedicated span gas port if the IZS option is installed.
Span gas from a gas tank would need to be supplied through the Sample port or through
one of the auxiliary ports available on the rear panel (with modified internal plumbing),
although the user could modify the plumbing to have the span gas go through the IZS oven
(without the permeation tube installed).
Wait until NOX
STB falls below
0.5 ppb. This may
take several
minutes.
The value of NOX
STB may jump
significantly. Wait
until NOX STB falls
below 0.5 ppb. This
may take several
minutes.
SPAN CAL M NOX STB=XXX.X PPB NOX=X.XX
< TST TST > ZERO SPAN CONC EXIT
SAMPLE NOX STB=XXX.X PPB NOX=X.X
< TST TST > CAL CALZ CALS SETUP
ZERO CAL M NOX STB=XXX.X PPB NOX=X.X
< TST TST > ZERO CONC EXIT
SAMPLE NOX STB=XXX.X PPB NOX=X.X
< TST TST > CAL CALZ CALS SETUP
EXIT returns to the main
SAMPLE display
ACTION:
Record the
NO
X
, NO
2
& NO
readings presented in
the upper right corner
of the display.
ACTION:
Record the
NO
X
, NO
2
& NO
readings presented in
the upper right corner
of the display.
SAMPLE RANGE = 500.0 PPB NOX=X.XX
< TST TST > CAL CALZ CALS SETUP
Scroll to the NOX
STB test function.
7.7. Calibration With Independent or AUTO Ranges
Additional considerations apply when calibrating a Model 9110EH with reporting ranges set to
AUTO (automatic) or IND (independent) mode (Sections 6.5.4 and 6.5.5).
7.7.1. Calibration in AUTO Range Mode
If the analyzer is operated in AUTO range mode, the high and low ranges must be indepen-
dently calibrated. After pressing the CAL, CALZ or CALS keys, the user is prompted for the
range to be calibrated as seen in the zero calibration example below.
124 M9110EH Rev 0