Teledyne 9110T instruction manual Teledyne Analytical Instruments 298

Model 9110T NOx Analyzer Troubleshooting & Service

PART 3: PERFORM THE SIMPLIFIED GPT CALCULATION.

12.Generate the same 450 ppb NO gas & input 400 ppb of O3 (or generate 450 ppb NO & 400 ppb NO2, if that’s what your calibrator says).

13.Allow the instrument to stabilize for 10 minutes.

14.Write down the NOx value on line 6 & the NO value on line 9.

15.Subtract line 6 from line 6 & put that onto line 7.

16.Subtract line 8 from line 7 & put that onto line 10.

17.Write the number from line 7 into the blank next to letter A on line 11 & put the number from line 10 into the blank next to letter B on line 11.

18.Divide A by B & multiply it by 100.

19.Write this value it into the blank next to letter C on lines 11 and 12.

20.Subtract that value from 100 & write it in the blank next to the letter D on line 12.

21.This is the converter efficiency.

∙This value should be >96%.

∙For CEMS applications, a converter efficiency of <96% might be acceptable, depending on application & the guideline set up by the regulatory agency.

∙In any application, check with your regulatory agency (agencies) to see what the minimum CE factor is before replacing the converter.

Teledyne Analytical Instruments 298