Division 8.1.2 Summary of calibration and verification
United Kingdom
Table 6.4 summarizes the calibrations and verifications described in section 8 and indicates when these have to be performed.
Table 6.4
Summary of Calibration and Verifications
| Perform calibrations and verifications more frequently, according to measurement system manufacturer instructions and good engineering judgment. | |
| The CVS verification is not required for systems that agree within ± 2 % based on a chemical balance of carbon or oxygen of the intake air, fuel, and diluted exhaust gas. | |
| Type of calibration or verification | Minimum frequencyf1 |
|---|---|
| 8.1.3: accuracy, repeatability and noise | Accuracy: Not required, but recommended for initial installation. Repeatability: Not required, but recommended for initial installation. Noise: Not required, but recommended for initial installation. |
| 8.1.4: linearity verification | Speed: Upon initial installation, within 370 days before testing and after major maintenance. Torque: Upon initial installation, within 370 days before testing and after major maintenance. Intake air, dilution air and diluted exhaust gas flows and batch sample flow rates: Upon initial installation, within 370 days before testing and after major maintenance, unless flow is verified by propane check or by carbon or oxygen balance. Raw exhaust gas flow: Upon initial installation, within 185 days before testing and after major maintenance, unless flow is verified by propane check or by carbon or oxygen balance. Gas dividers: Upon initial installation, within 370 days before testing and after major maintenance. Gas analyzers (unless otherwise noted): Upon initial installation, within 35 days before testing and after major maintenance. FTIR analyser: Upon installation, within 370 days before testing and after major maintenance. PM balance: Upon initial installation, within 370 days before testing and after major maintenance. Stand-alone pressure and temperature: Upon initial installation, within 370 days before testing and after major maintenance. |
| 8.1.5: Continuous gas analyzer system response and updating-recording verification — for gas analyzers not continuously compensated for other gas species | Upon initial installation or after system modification that would affect response. |
| 8.1.6: Continuous gas analyzer system response and updating-recording verification — for gas analyzers continuously compensated for other gas species | Upon initial installation or after system modification that would affect response. |
| 8.1.7.1: torque | Upon initial installation and after major maintenance. |
| 8.1.7.2: pressure, temperature, dew point | Upon initial installation and after major maintenance. |
| 8.1.8.1: fuel flow | Upon initial installation and after major maintenance. |
| 8.1.8.2: intake flow | Upon initial installation and after major maintenance. |
| 8.1.8.3: exhaust gas flow | Upon initial installation and after major maintenance. |
| 8.1.8.4: diluted exhaust gas flow (CVS and PFD) | Upon initial installation and after major maintenance. |
| 8.1.8.5: CVS/PFD and batch sampler verificationf2 | Upon initial installation, within 35 days before testing, and after major maintenance. (Propane check) |
| 8.1.8.8: vacuum leak | Upon installation of the sampling system. Before each laboratory test according to point 7.1: within 8 hours before the start of the first test interval of each duty cycle sequence and after maintenance such as pre-filter changes. |
| 8.1.9.1: CO2 NDIR H2O interference | Upon initial installation and after major maintenance. |
| 8.1.9.2: CO NDIR CO2 and H2O interference | Upon initial installation and after major maintenance. |
| 8.1.10.1: FID calibration HC FID optimization and HC FID verification | Calibrate, optimize, and determine CH4 response: upon initial installation and after major maintenance. Verify CH4 response: upon initial installation, within 185 days before testing, and after major maintenance. |
| 8.1.10.2: raw exhaust gas FID O2 interference | For all FID analyzers: upon initial installation, and after major maintenance. For THC FID analyzers: upon initial installation, after major maintenance, and after FID optimization according to 8.1.10.1. |
| 8.1.11.1: CLD CO2 and H2O quench | Upon initial installation and after major maintenance. |
| 8.1.11.3: NDUV HC and H2O interference | Upon initial installation and after major maintenance. |
| F18.1.11.4: Sample dryer NO 2 penetration (chiller) | Upon initial installation and after major maintenance. |
| 8.1.11.5: NO2-to-NO converter conversion | Upon initial installation, within 35 days before testing, and after major maintenance. |
| 8.1.12: Sample dryer verification | For thermal chillers: upon installation and after major maintenance. For osmotic membranes: upon installation, within 35 days of testing and after major maintenance. |
| 8.1.13.1: PM balance and weighing | Independent verification: upon initial installation, within 370 days before testing, and after major maintenance. Zero, span, and reference sample verifications: within 12 hours of weighing, and after major maintenance. |
Annotations
Textual amendments
Footnotes
- f1
-
Perform calibrations and verifications more frequently, according to measurement system manufacturer instructions and good engineering judgment.
- f2
-
The CVS verification is not required for systems that agree within ± 2 % based on a chemical balance of carbon or oxygen of the intake air, fuel, and diluted exhaust gas.