Code of Federal Regulations > Title 40 > Chapter I > Part 1065 > Subpart C - Subpart C—Measurement Instruments

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

MEASUREMENT OF ENGINE PARAMETERS AND AMBIENT CONDITIONS

§ 1065.210 - Work input and output sensors.

§ 1065.215 - Pressure transducers, temperature sensors, and dewpoint sensors.

§ 1065.201 - Overview and general provisions.

§ 1065.202 - Data updating, recording, and control.

§ 1065.205 - Performance specifications for measurement instruments.

FLOW-RELATED MEASUREMENTS

§ 1065.220 - Fuel flow meter.

§ 1065.225 - Intake-air flow meter.

§ 1065.230 - Raw exhaust flow meter.

§ 1065.240 - Dilution air and diluted exhaust flow meters.

§ 1065.245 - Sample flow meter for batch sampling.

§ 1065.247 - Diesel exhaust fluid flow rate.

§ 1065.248 - Gas divider.

CO AND C02 MEASUREMENTS
HYDROCARBON, H2, AND H2O MEASUREMENTS

§ 1065.250 - Nondispersive infrared analyzer.

§ 1065.255 - H2 measurement devices.

§ 1065.257 - H2O measurement devices.

HYDROCARBON MEASUREMENTS

§ 1065.260 - Flame-ionization detector.

§ 1065.265 - Nonmethane cutter.

§ 1065.266 - Fourier transform infrared analyzer.

§ 1065.267 - Gas chromatograph with a flame ionization detector.

§ 1065.269 - Photoacoustic analyzer for ethanol and methanol.

§ 1065.270 - Chemiluminescent NOX analyzer.

§ 1065.272 - Nondispersive ultraviolet NOX analyzer.

§ 1065.274 - Zirconium dioxide (ZrO2) NOX analyzer.

§ 1065.275 - N2O measurement devices.

§ 1065.277 - NH3 measurement devices.

§ 1065.280 - Paramagnetic and magnetopneumatic O2 detection analyzers.

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

PM MEASUREMENTS

§ 1065.290 - PM gravimetric balance.

§ 1065.295 - PM inertial balance for field-testing analysis.

§ 1065.298 - Correcting real-time PM measurement based on gravimetric PM filter measurement for field-testing analysis.