1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Principles of opacimeters
5.1 General
5.2 Measurement of light absorption
coefficient
5.3 Conditions of use
6 Specifications of opacimeters for measurement
of opacity
6.1 Basic specifications
6.2 Design specifications
7 Additional specifications for opacimeters to
measure light absorption coefficient
7.1 Reference conditions
7.2 Basic specifications
7.3 Design specifications
8 Measurement of transients
8.1 General
8.2 Response of the opacimeter
8.3 Physical delay time, td
8.4 Temperature response time, tT
8.5 Peak hold
9 Specifications concerning specific opacimeters
and their installation
9.1 Sampling opacimeter
9.2 In-line full-flow opacimeter
9.3 End of line (plume-type) opacimeter
9.4 Opacimeter for free-acceleration tests
9.5 Installation of opacimeters in a test
bench
10 Data and instrumentation requirements
10.1 Example of specific requirements for
sampling opacimeters
10.2 Data requirements
10.3 Instrumentation requirements
11 Verification of opacimeter types
11.1 Introduction
11.2 General considerations
11.3 Data supplied by the manufacturer
11.4 Instrumentation requirements
11.5 Instrument verification
11.6 Verification of basic and design
specifications
11.7 Verification of response characteristics
12 Verification of in-service conformity of
opacimeters
12.1 General
12.2 Items to be checked
12.3 Details of checks
13 Test report of opacimeter verification
13.1 Data and instrumentation requirements
13.2 Results of instrument verification
13.3 Results of verification of basic and
design specifications (see 11.6)
13.4 Verification of response characteristics
(see 11.7)
Annex A (normative) Determination of the "mean exhaust
gas temperature" in the smoke
chamber of an air-scavanged
opacimeter
Bibliography