# The Measuring Instruments Regulations 2016, Paragraph 14


If the exhaust gas analyser is capable to operate with different fuels (e.g. petrol or liquefied gas), there shall be the possibility to select the suitable coefficients for the Lambda calculation without ambiguity concerning the appropriate formula.
CONFORMITY ASSESSMENT The conformity assessment procedures specified in the modules in Schedule 1B applicable to exhaust gas analysers that the manufacturer can choose between are:
(a) B and F;
(b) B and D; o
(c) H1.

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Source: https://www.legislation.gov.uk/uksi/2016/1153/schedule/1J/paragraph/14 (the official version)
Page: https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1J/paragraph-14
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.