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Heat meters - Part 2: Constructional requirements
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Available format(s): Hardcopy, PDF
Superseded date: 12-06-2019
Language(s): Spanish, Castilian, English
Published date: 21-09-2016
Publisher: Asociacion Espanola de Normalizacion
Foreword1 Scope2 Normative references3 Temperature sensors 3.1 General 3.2 Mechanical design 3.2.1 Materials of temperature probe sheath and pocket 3.2.2 Dimensions of direct mounted short probes (Type DS) 3.2.3 Dimensions of direct mounted long probes (Type DL) 3.2.4 Dimensions of direct mounted long probes (Type PL) 3.2.5 Dimensions of temperature pocket 3.2.6 Design of short probes with respect to installation 3.2.7 Design of long probes with respect to installation 3.3 Platinum temperature sensor 3.3.1 Specialized definitions for 2-wire temperature probes 3.3.2 Resistance characteristics 3.3.3 Signal leads 3.3.4 Temperature sensors for the 2-wire method 3.3.5 Temperature sensors for the 4-wire method 3.3.6 Thermal response time 3.4 Other temperature sensors4 Flow sensors 4.1 Maximum admissible working pressure, MAP 4.2 Sizes and dimensions 4.3 Test signal output 4.4 Adjusting device5 Calculators 5.1 Mechanical dimensions for calculators for domestic use 5.2 Terminals - specification and identification 5.2.1 Terminals for signal leads 5.2.2 Terminals for connection to the mains supply 5.3 Batteries 5.4 Dynamic behaviour 5.5 Test signal output 5.6 24 hours interruption in supply voltage6 Complete meter7 Interfaces between sub-assemblies 7.1 Definitions for pulse device interfaces 7.1.1 Electrical connection 7.1.2 Classification of pulse output devices 7.1.3 Timing and electrical parameters for pulse output devices (other than test signals) 7.1.4 Classification of pulse input devices 7.1.5 Timing and electrical parameter for pulse input devices 7.1.6 Compatibility8 Marking and security seals 8.1 Marking 8.1.1 Temperature sensor pairs 8.1.2 Flow sensor 8.1.3 Calculator 8.1.4 Complete meter 8.2 Sites for marking 8.3 Security sealsAnnexesA (informative) - Examples of temperature sensorsB (normative) - Input and output test signalsC (informative) - Low voltage power supply for heat meters and their sub-assembliesFiguresTables
Defines the constructional requirements and applies to heat meters, that is to instruments intended for measuring the heat which, in a heat-exchange circuit, is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid.
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