Teledyne T100 Manuale Utente

98 

The dilution ratio is a software option that allows the user to compensate for any dilution 
of the sample gas before it enters the sample inlet. Once the degree of dilution is known, 
add an appropriate scaling factor to the analyzer’s SO2 concentration calculation so that 
the measurement range and concentration values reflect the undiluted values when 
shown on the instrument’s front panel display screen and reported via the analog and 
serial outputs. 

Using the dilution ratio option is a 4-step process: 

1.  Select reporting range units: Follow the procedure in Section 5.4.4 

2.  Select the range: Use the procedures in Section 5.4. Ensure 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. 

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 = 500.000 PPB        SO2 =XXX.X     
 

 < TST  TST >  CAL  

 

 

 

 

 

 

SETUP 

 

      

 

  

 

 CFG  DAS

  RNGE  

PASS  CLK  MORE  

EXIT

 

 

 

 

SETUP    

 

 

 

 MODE

 

 

 

 

SET  UNIT

  

 

EXIT

 

 only appears 

if the dilution ratio 

option has been 

installed 

 

 

 

SETUP  

 

 

             

  

EXIT

 

Toggle to set the dilution factor. 

 

This is the number by which the 

analyzer will multiply the SO

2

 

concentrations of the gas passing 

through the reaction cell. 

 

 

 

SETUP    

 

 

 

 

 

 0          0          2         0         .0 

             

 

 

 ignores the 

new setting. 

accepts the 

new setting. 

SAMPLE          

 

 

        

 

                      

  

 EXIT

 

 

06807C DCN6650