Nondispersive infrared analyzer.

(a) Application. Use a nondispersive infrared (NDIR) analyzer to measure CO and CO 2 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. [76 FR 57442, Sept. 15, 2011, as amended at 79 FR 23761, Apr. 28, 2014]