CSA C900.1:21 Thermal energy meters — Part 1: General requirements

CSA C900.1:21 Thermal energy meters — Part 1: General requirements. 2 Normative references [Add the following] In this Standard, any reference to European or International Standards shall be replaced by the relevant National Standard of Canada. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. The following National Standards of Canada, published by CSA Group, are adoptions of CEN and IEC Standards. The requirements of these CSA Group Standards shall take precedence over the European or International Standards on which they are based. Any reference within CSA C900.1 to the European or International Standard shall be replaced by a reference to the equivalent Canadian Standard. CSA Group CAN/CSA-C22.2 No. 61010-1:12 (R2017) Safety requirements for electrical equipment for measurement, control, and laboratory use – Part 1: General requirements [Replaces EN 61010-1] CSA C900.2:21 Thermal energy meters — Part 2: Constructional requirements [Replaces EN 1434-2:2015+A1:2018] CSA C900.4:21 Thermal energy meters — Part 4: Pattern approval test [Replaces EN 1434-4:2015+A1:2018] 6 Technical characteristics 6.1 Materials and construction 6.1.5 [Replace this Clause with the following] The maximum pressure loss at q p shall not exceed 0.25 bar [3.63 psi*]. * psi = pounds per square inch. 6.5 Supply voltage 6.5.1 [Replace this Clause with the following] AC mains operated thermal energy meters or subassemblies shall have a rated voltage, 196 V < U n < 253 V or 98 V < U n < 127 V. 11 Thermal energy meter specification 11.2 Flow sensor [Replace the sixth dashed item in the first paragraph with the following] — Maximum admissible working pressure (PS in bar or psi); 11.3 Temperature sensor pair [Replace the fifth dashed item with the following] — Maximum admissible working pressure for direct mounted sensors (PS in bar or psi); 11.5 Complete meters [Replace the tenth dashed item with the following] — Maximum admissible working pressure for flow sensors (PS in bar or psi); CSA C900.1 pdf download.