4
Description
Sensor KNX AQS/TH-B-UP
• as of software 3.1 • Status: 24.09.2014 • Technical changes reserved. Errors reserved.
* Mind the notes on
The product conforms with the provisions of EC guidelines
•
EMC Directive 2004/108/EC
•
Low Voltage Directive 2006/95/EC
The following standards and/or technical specifications have been applied:
•
EN 50491-5-1: 2010
•
EN 50491-5-2: 2011
•
EN 60730-1: 2011
1.1.1. Accuracy of the measurement
Measurement variations from sources of interference (see chapter
Installation
position
) must be corrected in the ETS in order to ensure the specified accuracy of the
sensor (offset). To ensure a correct CO
2
measurement, the device must be installed in
a windproof socket.
The indicated
accuracy of the CO
2
measurement
will be achieved after a run-in
period of 24 hours (without interruption of the bus voltage) if the sensor has been in
contact with fresh air (350…450 ppm) at least once in this period.
After this, the CO
2
sensor will recalibrate every two weeks by defining the lowest
measured value captured during that period (without interruption of the bus voltage)
as a reference for fresh air.
The guarantee the accuracy on a sustained basis, the sensor should be provided with
fresh air at least once in two weeks. This occurs normally during room ventilation.
When
measuring temperature
, the self-heating of the device is considered by the
electronics. The heating is compensated by reducing the measured temperture by the
self-heating of 1.8°C. The indicated indoor temperature measured value approches the
actual room temperature during a 2 hours heating period.
Temperature measurement
range
-30…+60°C
Temperature resolution
0.1°C
Temperature accuracy*
± 0,9°C at 25°C
Humidity measurement
range
0…100%
Humidity resolution
0.1%
Humidity accuracy
0…20 % = ± 5% R. H.
20…80 % = ± 3% R. H.
80…100 % = ± 5% R. H.
Humidity drift
± 0.5% R. H. per year in normal air
