CSA C900.4:21 (R2026)

Description

CSA Preface This is the third edition of CSA C900.4, Thermal energy meters — Part 4: Pattern approval tests , which is an adoption, with Canadian deviations, of the identically titled CEN (European Committee for Standardization) Standard EN 1434-4 (edition 3:2015 consolidated with Amendment 1:2018). It supersedes the previous edition, published in 2013 as CAN/CSA-C900.4 (adopted EN 1434-4:2007), Heat meters — Part 4: Pattern approval tests. For brevity, this Standard will be referred to as “CSA C900.4” throughout. This Standard is one of a group of Standards on Thermal energy meters being adopted by CSA Group, which consists of the following: a) CSA C900.1 (adopted EN 1434-1) — Part 1: General requirements; b) CSA C900.2 (adopted EN 1434-2) — Part 2: Constructional requirements; c) CSA C900.3 (adopted EN 1434-3) — Part 3: Data exchange and interfaces; d) CSA C900.4 (adopted EN 1434-4) — Part 4: Pattern approval tests; e) CSA C900.5 (adopted EN 1434-5) — Part 5: Initial verification tests; and f) CSA C900.6 (adopted EN 1434-6) — Part 6: Installation, commissioning, operational monitoring and maintenance. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was reviewed for Canadian adoption by the CSA Technical Committee on Thermal Energy Meters, under the jurisdiction of the CSA Strategic Steering Committee on Fuels and Appliances, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope This European Standard specifies pattern approval tests for thermal energy meters. Thermal energy meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The thermal energy meter indicates the quantity of heat in legal units. Electrical safety requirements are not covered by this European Standard. Pressure safety requirements are not covered by this European Standard. Surface mounted temperature sensors are not covered by this European Standard. This standard covers meters for closed systems only, where the differential pressure over the thermal load is limited.