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BS EN 27726:1994
Superseded
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Thermal environments. Instruments and methods for measuring physical quantities
Hardcopy , PDF
06-11-2001
English
15-01-1994
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
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