Teledyne 9110EH - Nitrogen Oxides Analyzer - Manual (Page 72)

Operating Instructions Model 9110EH Instruction Manual
• Select the range: Use the procedures in Section 6.6. Make sure that the SPAN value
entered is the maximum expected concentration of the undiluted calibration gas and
that the span gas is either supplied through the same dilution inlet system as the
sample gas or has an appropriately lower actual concentration. For example, with a
dilution set to 100, a 1 ppm gas can be used to calibrate a 100 ppm sample gas if
the span gas is not routed through the dilution system. On the other hand, if a
100 ppm span gas is used, it needs to pass through the same dilution steps as the
sample gas.
• Set the dilution factor as a gain (e.g., a value of 20 means 20 parts diluent and 1
part of sample gas):
SAMPLE RANGE = 500.0 PPB NOX=X.X
< TST TST > CAL SETUP
SETUP C.3 PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP C.3 RANGE CONTROL MENU
MODE SET UNIT DIL EXIT
DIL only appears
if the dilution ratio
option has been
installed
SETUP C.3 DIL FACTOR: 1.0 GAIN
0 0 0 1 .0 ENTR EXIT
Toggle these keys to
set the dilution factor.
This is the number by
which the analyzer will
multiply the NO, NO
2
and NO
x
concentrations
of the gas passing
through the reaction
cell.
SETUP C.3 DIL FACTOR: 20.0 GAIN
0 0 2 0 .0 ENTR EXIT
EXIT ignores the
new setting.
ENTR accepts the
new setting.
The analyzer multiplies the measured gas concentrations with this dilution factor and
displays the result.
Calibrate the analyzer. Once the above settings have been entered, the instrument needs to
be recalibrated using one of the methods discussed in Chapter 7.
58 M9110EH Rev 0