ISO/PAS 3930:2009
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Instruments for measuring vehicle exhaust emissions Metrological and technical requirements; Metrological control and performance tests
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
20-03-2019
English
15-12-2009
Important note : Users cannot be edited or removed once added to your Multi user PDF.
ISO/PAS 3930:2009 specifies the metrological and technical requirements and tests for digital measuring instruments that serve to determine the volume fractions of certain components of the exhaust gases emanating from motor vehicles. The conditions with which such instruments shall comply in order to meet any OIML performance requirements are also established.
ISO/PAS 3930:2009 is applicable to instruments, particularly those used according to the procedure defined in ISO 3929, intended for the inspection and maintenance of in-use motor vehicles with spark ignition engines. These instruments are used to determine the volume fraction of one or more of the following exhaust gas components:
- carbon monoxide (CO),
- carbon dioxide (CO2),
- hydrocarbons (HC, in terms of n-hexane), and
- oxygen (O2)
at the moisture level of the sample as analysed.
In addition to the measurement of these components, ISO/PAS 3930:2009 specifies the lambda calculation for the instruments provided with a facility to determine the value of air/fuel ratio in the exhaust gases.
ISO/PAS 3930:2009 applies to instruments whose principle of detection is based on infrared absorption in gases for CO, CO2 and HC. Oxygen is generally measured with a fuel cell.
ISO/PAS 3930:2009 does not exclude any other types of instruments that, although based on other principles of detection, meet the specified metrological and technical requirements and satisfy the associated tests.
ISO/PAS 3930:2009 defines three accuracy classes of the instruments: Class 00, Class 0 and Class I.
ISO/PAS 3930:2009 does not apply to equipment for on-board diagnostics incorporated in motor vehicles.
| DocumentType |
Standard
|
| Pages |
42
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Supersedes |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.