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Reference gas

C.1 General
The REFERENCE GAS tables given below are provided to allow the customer to compare the
performances measured by himself, obtained with his own natural gas, with the performances
advertised by the manufacturer, obtained with the manufacturer's natural gas. When a
manufacturer and an increasing number of customers test the same equipment with different
natural gases (and publish their test results), a database of adjustment factors can be
progressively established to distinguish between natural gases. Eventually, a new customer
should be able to find the adjustment factor in order to correct the advertised performances to
his particular gas composition by referring to the closest REFERENCE GAS .

C.2 Reference gases for natural gas and propane gas

A set of 14 REFERENCE GASES for natural gas is provided in Table C.1, and a set of 17 reference
gases for propane in Table C.2.
When a TEST GAS is used, the REFERENCE GAS closest to the test gas should be mentioned in report.

м.б.
reference gas-эталонный газ
test gas-тестируемый/испытуемый газ?

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