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BS 7234-1:1990

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Heat meters Specification: general requirements

Available format(s)

Hardcopy , PDF

Superseded date

15-09-1997

Language(s)

English

Published date

30-03-1990

€231.38
Excluding VAT

Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Technical characteristics
3.1 Design
3.2 Meter size and dimensions
3.3 Working parameters
3.4 Indicating device
3.5 Supplementary indicating devices
3.6 Materials and construction
3.7 Heat meter power supplies and the use of batteries
3.8 Electrical performance and safety requirements
3.9 Strainers
3.10 Protection against fraud
3.11 Marking
3.12 Storage conditions
4. Metrological characteristics
4.1 Metrological classes
4.2 Maximum permissible errors
5. Pressure loss
6. Compliance criteria and testing
6.1 Compliance criteria
6.2 Principles for the measurement error testing of
     combined heat meters
6.3 Principles for the measurement error testing of
     complete heat meters
7. Pattern approval
7.1 Procedure
7.2 Pattern approval tests
7.3 Certificate of pattern approval
8. Initial verification
8.1 Procedure
8.2 Initial verification tests
Tables
1. Table of threaded end connections: range of sizes
     and thread lengths
2. Table of maximum permissible errors +/- E of heat
     meters
3. Table of mains borne transient types
Figures
1. Length of threaded connection and clearance length
2. Waveshape of a single type 1 transient
3. General graph of a type 1 and type 2 fast transient

Establishes definitions, and specifies electrical and mechanical compatibility, accuracy, testing, pattern approval, and initial verification requirements for heat meters for charging for heat supplied (normally in the form of hot water) to domestic or small commercial premises from centralised heat and power systems for district heating purposes.

BS 7234-2:1990 Heat meters Specification for installation
BS 7234-3:1990 Heat meters Methods of test for pattern approval and initial verification

BS 5728-3:1984 Measurement of flow of cold potable water in closed conduits Methods for determining principal characteristics of single meters (including test equipment)
IEC 60801-4:1988 Electromagnetic compatibility for industrial-process measurement and control equipment - Part 4: Electrical fast transient/burst requirements
BS 7234-3:1990 Heat meters Methods of test for pattern approval and initial verification

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