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BS EN 17690-1:2023

BS EN 17690-1:2023

$167.15

Components for BAC control loop. Sensors – Room temperature sensors

Published By Publication Date Number of Pages
BSI 2023 44
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This document specifies requirements and test methods for room temperature sensors used to control the room temperature. This document is applicable to wall mounted and flush mounted room temperature sensors. The following aspects are not covered by this document: – pendulum temperature sensors; – ceiling mounted temperature sensor; – extract air temperature sensors. NOTE The measured value available at the output of the sensor is influenced by the place where the sensor device is located and factors such as air velocity, wall temperature, self/waste heating of the device and the air temperature. The perceived temperature, which is important for the well-being of a person, depends among other factors on air temperature, temperature of the surrounding walls and air flow rate as indicated in EN ISO 7730. The temperature sensor element can be combined with other sensors in one device. This document only deals with the room temperature sensing of this devices. Other sensors are not covered except of their influence on the room temperature sensing (e.g. self-heating). This document specifies sensor characteristics contributing to the determination of the control accuracy of individual zone controller according to EN 15500 1.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 European foreword
7 Introduction
Figure 1 — Control loop
8 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols, units, subscripts and abbreviations
Table 1 — Symbols and units
11 Table 2 — Subscripts
Table 3 — Abbreviations
5 Room temperature sensor device
12 6 Requirements
6.1 Electrical requirements
6.1.1 Electromagnetic compatibility
6.1.2 Degree of protection
6.2 Declarations by the manufacturer
6.2.1 General
6.2.2 Protection class
6.2.3 Measuring range
6.2.4 Sensor (device) accuracy
13 Table 4 — Example of accuracy declaration
6.2.5 Time constant t63
Table 5 — Example of declaration for Time constant τ
6.2.6 Wall coupling coefficient kW
14 Table 6 — Example of declaration for wall coupling kW
6.2.7 Self-heating compensation
6.2.8 Output signals
Table 7 — Analogue signals
Table 8 — Example of digital signals
15 6.2.9 Power supply
Table 9 — Power supply types
6.2.10 Power consumption of the device
6.2.11 Electrical connection
6.2.12 Dimensions
6.2.13 Weight
6.2.14 Environmental conditions
7 Test set-up
7.1 Test equipment
7.1.1 Climatic chamber
17 Figure 2 — Principle of the climatic chamber
7.1.2 Wall modules
7.1.2.1 Wall module for measuring sensor device accuracy and time constant
18 Figure 3 — Wall module for surface mounted sensor devices
19 Figure 4 — Wall module for the wall integrated sensor devices
7.1.2.2 Wall module for measuring wall coupling
20 Figure 5 — Wall module for measuring the wall coupling and an example of an adapter plate
21 Figure 6 — Example of a wall module for measuring the wall coupling of surface mounted sensor devices
7.2 Test installation
7.2.1 Mounting of the Device Under Test (DUT)
7.2.2 Wiring of the room sensor devices
7.2.3 Reference sensor position
22 Figure 7 — Reference sensor position, side view
Figure 8 — Reference sensor position, front view
23 Figure 9 — Reference sensor position, top view
7.3 Temperature homogeneity
Figure 10 — Top view of the test section with measurement points
24 7.4 Determination of the mean air velocity
Table 10 — Required air volume flow in the Venturi nozzle
7.5 Homogeneity of air velocity
25 8 Test methods
8.1 Sensor accuracy
8.1.1 General
8.1.2 Test conditions sensor accuracy test
8.1.2.1 Mounting of the Device Under Test (DUT)
8.1.2.2 Load conditions
8.1.2.3 Measurement tolerance
8.1.2.4 Steady-state condition
Table 11 — Steady-state conditions
8.1.2.5 Time constant of reference sensor
26 8.1.2.6 Temperature homogeneity
8.1.3 Impact of temperature variation Δϑtvar
8.1.4 Impact of air velocity variation Δϑairvel
27 8.1.5 Impact of power supply of the device Δϑpsup
8.2 Time constant
8.2.1 General
28 Figure 11 — Time constant t63
8.2.2 Test conditions
8.2.2.1 Mounting of the Device Under Test (DUT)
8.2.2.2 Load conditions
8.2.2.3 Measurement tolerance
8.2.2.4 Steady-state condition
29 Table 12 — Steady-state conditions
8.2.2.5 Time constant of reference sensor
8.2.2.6 Temperature step for time constant measurement
8.2.2.7 Sampling time
8.2.2.8 Temperature homogeneity
8.2.2.9 Mean air velocity
8.3 Wall coupling
8.3.1 General
30 8.3.2 Test conditions
8.3.2.1 Mounting of the Device Under Test (DUT)
8.3.2.2 Load conditions
8.3.2.3 Measurement tolerance
8.3.2.4 Steady-state condition
Table 13 — Steady-state conditions
8.3.2.5 Time constant of reference sensor
31 8.3.2.6 Temperature homogeneity
8.3.2.7 Mean air velocity
8.4 Power consumption measurement
8.4.1 General
8.4.2 Average active power
8.4.2.1 General
8.4.2.2 Test conditions
32 8.4.3 Average apparent power
8.4.3.1 General
8.4.3.2 Test conditions
8.4.4 Inrush peak current and periodic peak current measurement
8.4.4.1 General
8.4.4.2 Test conditions
9 Marking and documentation
9.1 Marking
33 9.2 Documentation
Table 14 — Documentation required
34 Annex A (informative) Measurements
A.1 24 V power supply / 0 V to 10 V sensor output
Figure A.1 — 24 power supply / 0 V to 10 V sensor output
35 A.2 24 V power supply / 4 mA to 20 mA sensor output
Figure A.2 — 24 V power supply / 4 mA to 20 mA sensor output
36 A.3 24 V power supply (4 mA to 20 mA in the loop), 4 mA to 20 mA sensor output
Figure A.3 — 24 V power supply (4 mA to 20 mA in the loop), 4 mA to 20 mA sensor output
37 A.4 24 V power supply, sensor output: Bus signal (e.g. KNX)
Figure A.4 — 24 V power supply, sensor output: Bus signal (e.g. KNX)
38 A.5 24 V power supply: bus powered, sensor output: Bus signal (e.g. KNX)
Figure A.5 — 24V power supply: bus powered, sensor output: Bus signal (e.g. KNX)
A.6 Inrush and periodic peak current measurement
39 Figure A.6 — Inrush and periodic peak current measurement
A.7 Correction factor air velocity inside the test chamber
40 Figure A.7 — Air velocity profile inside the test chamber
41 Table A.1 — Determination of correction factor fcorr
43 Bibliography

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BS EN 17690-1:2023
$167.15