40 CFR 1065.284 - Zirconium dioxide (ZrO2) air-fuel ratio and O2 analyzer.

Regulations last checked for updates: Nov 25, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024

View all text of Subpart C [§ 1065.201 - § 1065.298]

§ 1065.284 - Zirconium dioxide (ZrO2) air-fuel ratio and O2 analyzer.

(a) Application. You may use a zirconia (ZrO2) analyzer to measure air-to-fuel ratio in raw exhaust for continuous sampling. You may use O2 measurements with intake air or fuel flow measurements to calculate exhaust flow rate according to § 1065.650.

(b) Component requirements. We recommend that you use a ZrO2 analyzer that meets the specifications in § 1065.205. Note that your ZrO2-based system must meet the linearity verification in § 1065.307.

[70 FR 40516, July 13, 2005, as amended at 76 FR 57443, Sept. 15, 2011; 79 FR 23762, Apr. 28, 2014; 89 FR 29797, Apr. 22, 2024]

authority: 42 U.S.C. 7401-7671q.

source: 70 FR 40516, July 13, 2005, unless otherwise noted.

cite as: 40 CFR 1065.284