7
Installation and commissioning
Sensor KNX AQS/TH-B-UP
• as of software 3.1 • Version: 01.03.2017 • Technical changes and errors excepted.
* Mind the notes on
The product conforms with the provisions of EU guidelines.
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. During the warm-up
phase the reading may not be displayed at all or wrongly, or remain frozen at 2001.
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.
2.
Installation and commissioning
2.1. Installation notes
Installation, testing, operational start-up and troubleshooting should
only be performed by an electrician.
CAUTION!
Live voltage!
There are unprotected live components inside the device.
•
National legal regulations are to be followed.
•
Ensure that all lines to be assembled are free of voltage and take
precautions against accidental switching on.
Humidity measurement
range
0% RH …95% RH
Humidity resolution
0.1%
Humidity accuracy
±7,5% RH at 0...10% RH
±4,5% RH at 10...90% RH
±7,5% RH at 90...95% RH
Humidity drift
± 0.5% R.H. per year in normal air
Summary of Contents for KNX AQS TH-B-UP
Page 5: ...4 Clarification of signs...
