Code of Federal Regulations Title 40. Protection of Environment § 40.89.311 Analyzer calibration frequency

(a) Prior to initial use and after major repairs, bench check each analyzer (see § 89.315).

(b) Calibrations are performed as specified in §§ 89.319 through 89.324.

(c) At least monthly, or after any maintenance which could alter calibration, the following calibrations and checks are performed.

(d) Verify that all NDIR analyzers meet the water rejection ratio and the CO₂ rejection ratio as specified in § 89.318.

(e) Verify that the dynamometer test stand and power output instrumentation meet the specifications in Table 3 in appendix A of this subpart.