• BS EN 27726:1994

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Thermal environments. Instruments and methods for measuring physical quantities

    Available format(s):  Hardcopy, PDF

    Superseded date:  06-11-2001

    Language(s):  English

    Published date:  15-01-1994

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Cooperating organizations
    National foreword
    Foreword
    Specification
    0. Introduction
    1. Scope and field of application
    2. Reference
    3. General
    4. Specifications relating to the measuring instruments
    5. Specifications relating to measuring methods
    Annexes
    A. Measurement of air temperature
    B. Measurement of the mean radiant temperature
    C. Measurement of radiant temperature asymmetry
    D. Measurement of the absolute humidity of the air
    E. Measurement of air velocity
    ZA. (normative) Normative references to international
         publications with their relevant European publications
    Tables
    1. Main independent quantities involved in the analysis
         of a thermal environment
    2. Characteristics of measuring instruments
    3. Standard environmental conditions for the determination
         of time constants of sensors
    4. Measuring positions for the physical quantities of an
         environment
    5. Projected area factors
    6. Wet thermometer - Length of thermometer covered by the
         wet wick
    Figures
    1. Mean value of angle factor between a seated person
         and a vertical rectangle (above or below his centre)
         when the person is rotated around a vertical axis
    2. Mean value of angle factor between a seated person
         and a horizontal rectangle (on the ceiling or on
         the floor) when the person is rotated around a
         vertical axis
    3. Mean value of angle factor between a standing person
         and a vertical rectangle (above or below his centre)
         when the person is rotated around a vertical axis
    4. Mean value of angle factor between a standing person
         and a horizontal rectangle (on the ceiling or on the
         floor) when the person is rotated around a vertical
         axis
    5. Analytical formula relating to the calculation of
         the shape factor in the case of a small plane element
         perpendicular to a rectangular surface
    6. Analytical formula relating to the calculation of
         the shape factor in the case of a small plan element
         parallel to a rectangular surface
    7. Chart for the calculation of the shape factor in the
         case of a small plane element perpendicular to a
         rectangular surface
    8. Chart for the calculation of the shape factor in the
         case of a small plane element parallel to a
         rectangular surface
    9. Psychrometric chart - Example of the determination
         of the absolute humidity of the air
    10. Principle of operation of a psychrometer
    11. Saturated water vapour pressure above water and above
         a standard lithium chloride solution, as a function
         of the temperature
    12. Range of measurement of absolute humidity for lithium
         chloride hygrometers
    13. Diagram of the principle of a lithium chloride humidity
         detector
    14. Hot bulb anemometer - Example showing the effect of the
         direction of movement of the air on the measurement of
         air velocity
    15. Hot wire anemometer - Example showing the effect of the
         direction of movement of the air on the measurement of
         the air velocity
    National annexes
    NA. (informative) Committees responsible
    NB. (informative) Cross-reference

    Abstract - (Show below) - (Hide below)

    Specifies the minimum characteristics of appliances for measuring physical quantities characterising an environment as well as the methods for measuring the physical quantities of this environment. Also gives detailed tables, diagrams and annexes.

    General Product Information - (Show below) - (Hide below)

    Committee PH/9
    Development Note DRAFT FOR COMMENT 82/37523 DC
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 7963:2000 Ergonomics of the thermal environment. Guide to the assessment of heat strain in workers wearing personal protective equipment
    BS 3375-5:1997 Management services Guide to determination of exposure limits, recovery times and relaxation times in work measurement
    BS 7915:1998 Ergonomics of the thermal environment. Guide to design and evaluation of working practices for cold indoor environments

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 7243:2017 Ergonomics of the thermal environment — Assessment of heat stress using the WBGT (wet bulb globe temperature) index
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