Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 199)

Calibration Procedures Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 179
STEP TWO:
Set Expected NO and NO
X
Span Gas Concentrations.
Set the expected NO and NOx span gas concentration. These should be 80% of range of
concentration values likely to be encountered in this application. The default factory
setting is 100 ppm. If one of the configurable analog outputs is to be set to transmit
concentration values, use 80% of the reporting range set for that output.
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL CALZ CALS SETUP
SAMPLE GAS TO CAL:NOX
NOX O2 ENTR EXIT
SPAN CAL M A1:NXCNC1 =100PPM NOX=X.XXX
<TST TST> ZERO SPAN CONC EXIT
SAMPLE RANGE TO CAL:LOW
LOW HIGH ENTR EXIT
SPAN CAL M CONCENTRATION MENU
NOX NO CONV EXIT
SPAN CAL M NOX SPAN CONC:80.0 Conc
0 0 8 0 .0 ENTR EXIT
The NO
X
& NO span concentration
values automatically default to
80.0 Conc.
If this is not the the concentration of
the span gas being used, toggle
these buttons to set the correct
concentration of the NO
X
and NO
calibration gases.
EXIT ignores the new
setting and returns to
the previous display.
ENTR accepts the new
setting and returns to
the
CONCENTRATION
MENU.
If using NO span gas
in addition to NO
X
repeat last step.
Note The expected concentrations for both NO
X
and NO are usually set to the
same value unless the conversion efficiency is not equal to 1.000 or not
entered properly in the conversion efficiency setting. When setting
expected concentration values, consider impurities in your span gas
source (NO often contains 1-3% NO
2
and vice versa).