Foreword
1 Scope
2 Normative references
3 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 sensors
4 Flow sensors
4.1 Maximum admissible working pressure, MAP
4.2 Sizes and dimensions
4.3 Test signal output
4.4 Adjusting device
5 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 voltage
6 Complete meter
7 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 Compatibility
8 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 seals
Annexes
A (informative) - Examples of temperature sensors
B (normative) - Input and output test signals
C (informative) - Low voltage power supply for heat meters
and their sub-assemblies
Figures
Tables