CSA C837-16

1.1 Inclusions This Standard is intended to be used for compressed air systems with the following characteristics: a) electrically driven three-phase air compressors equal to or greater than 5 horsepower; b) positive displacement stationary air compressors and associated equipment; c) operating pressures between 2.5 and 17 bar(g) (36 and 250 psi(g)); and d) industrial and commercial applications of compressed air. 1.2 Exclusions The Standard is not intended to be used for the following purposes or systems: a) electrically driven single phase compressors; b) bench testing, measurement, or certification of the performance of an air compressor; c) measurement of heat recovery; d) process compressors for gases other than air; e) energy or water measurements for the mechanical cooling of water-cooled air compressors; f) compressors driven by energy sources other than electric motors; and g) compressors that are regulated by transportation standards. 1.3 Dual dimensions The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. Note: In the compressed air industry, both metric and imperial units are found in common practice and so are both used extensively in this Standard. 1.4 Terminology In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.