§1065.360. FID optimization and verification. — Inbound Citations

(iii) Note that if you adjust these flow rates on a THC FID to meet the O2 interference verification, you have reset RFCH4 for the next RFCH4 verification according to § 1065.360. Repeat the O2 interference verification after adjustment and determine RFCH4.

(3) Confirm that the FID analyzer meets all the specifications of § 1065.360.

(2) For an NMC, calculate xNMHC using the NMC's penetration fractions, response factors, and/or combined penetration fractions and response factors as described in § 1065.365, the THC FID's CH4 response factor, RFCH4[THC-FID], from § 1065.360, the initial THC contamination and dry-to-wet corrected THC concentration, xTHC[THC-FID]cor, as determined in paragraph (a) of this section, and the dry-to-wet corrected CH4 concentration, xTHC[NMC-FID]cor, optionally corrected for initial THC contamination as determined in paragraph (a) of this section.

(i) Use the following equation for an NMC configured as described in § 1065.365(d):

Eq. 1065.660-2

Example:

(ii) Use the following equation for penetration fractions determined using an NMC configuration as outlined in § 1065.365(e):

Example:

(iii) Use the following equation for an NMC configured as described in § 1065.365(f):

Example:

(1) SAE 770141, 1977, Optimization of Flame Ionization Detector for Determination of Hydrocarbon in Diluted Automotive Exhausts, Glenn D. Reschke, IBR approved for § 1065.360(c).

(i) Humidify the CH4 span gas as described in § 1065.365(g) and repeat the steps in paragraphs (d)(7) through (9) of this section until measurements are complete for each setpoint in the selected range.

(i) Humidify the CH4 span gas as described in § 1065.365(g) and repeat the steps in paragraphs (d)(7) through (9) of this section until measurements are complete for each setpoint in the selected range.

(i) Humidify the CH4 span gas as described in § 1065.365(g) and repeat the steps in paragraphs (d)(7) through (9) of this section until measurements are complete for each setpoint in the selected range.