eCFR Reference Browser

---

title: "40 CFR §1065.250"

source: "https://www.ecfr.gov/current/title-40/section-1065.250"

title_number: "40"

volume_number: "37"

chapter_number: "Unknown"

subchapter_code: "U"

subchapter_subject: "AIR POLLUTION CONTROLS"

part_code: "1065"

part_subject: "ENGINE-TESTING PROCEDURES"

subpart_code: "C"

subpart_subject: "Measurement Instruments"

section_number: "1065.250"

section_subject: "Nondispersive infrared analyzer."

cfr_reference: "40 CFR 1065.250"

title_name: "Title 40"

title_subject: "Protection of Environment"

parts_covered: "Part 1060 to End"

revised_date: "Revised as of July 1, 2019"

publication_date: "As of July 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

(a)Application. Use a nondispersive infrared (NDIR) analyzer to measure CO and CO2 concentrations in raw or diluted exhaust for either batch or continuous sampling.

(b)Component requirements. We recommend that you use an NDIR analyzer that meets the specifications in Table 1 of § 1065.205. Note that your NDIR-based system must meet the calibration and verifications in §§ 1065.350 and 1065.355 and it must also meet the linearity verification in § 1065.307.

§1065.250 - Nondispersive infrared analyzer.