Teledyne T300, Руководство по эксплуатации, Страница: 110 / 426

Setup Menu Teledyne API – Model T300/T300M CO Analyzer
108
5.4.5. DILUTION RATIO (OPTION)
This feature is a optional software utility that allows the user to compensate for any
dilution of the sample gas that may occur before it enters the sample inlet. Typically this
occurs in continuous emission monitoring (CEM) applications where the sampling
method used to remove the gas from the stack dilutes it.
Using the dilution ratio option is a 4-step process:
1. Select the appropriate units of measure (see Section 5.4.4).
2. Select the reporting range mode and set the reporting range upper limit (see Section
5.4.3).
•
Ensure that the upper span limit entered for the reporting range is the maximum
expected concentration of the
UNDILUTED gas.
3. 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=50.0 PPM CO=XX.XX
<TST TST> CAL SETUP
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP X.X RANGE CONTROL MENU
MODE SET UNIT DIL EXIT
SETUP X.X O2 DIL FACTOR:1.0 Gain
0 0 0 0 1 .0 ENTR EXIT
Toggle these buttons to
select dilution ratio gain
factor for CO gas.
Default = 1 (e.g. 1:1).
EXIT discards the new
setting.
ENTR accepts the
new setting.
SETUP X.X CO DIL FACTOR:1.0 Gain
0 0 0 0 1 .0 ENTR EXIT
Toggle these buttons to select dilution
ratio gain factor for CO
2
or O
2
gas.
NOTE
Display only appears if the optional
CO
2
or O
2
Sensor is installed.
4. Calibrate the analyzer.
•
Make sure that the calibration span gas is either supplied through the same dilution
system as the sample gas or has an appropriately lower actual concentration.
EXAMPLE: If the reporting range limit is set for 100 ppm and the dilution ratio
of the sample gas is 20 gain, either:
•
a span gas with the concentration of 100 ppm can be used if the span gas passes
through the same dilution steps as the sample gas, or;
•
a 5 ppm span gas must be used if the span gas IS NOT routed through the dilution
system.
06864B DCN6314