Functions; Measuring - Siemens QMX3.P37 Technical Principles

Temperature
(All Types)
Relative humidity
(QMX3.P70, QMX3.P74)
CO concentration
2
(QMX3.P70, QMX3.P74)
Air quality indication
(QMX3.P70)
Siemens
Building Technologies
5.5

Functions

The room operator units with control functions can be integrated in a KNX network.
The control functions for room temperature and ventilation allow for immediate
control of suitable actuators to control heating, cooling, and ventilation.
5.5.1

Measuring

The room operator units measure the room temperature via an integrated sensing
element. The room temperature can be transmitted to other bus members and
serves in KNX S-Mode as control variable of the integrated room temperature
controller.
The room operator units acquire the relative humidity in the room with the aid of a
humidity sensing element integrated in the front module. The relative room
humidity can be transmitted to other bus members and serves in KNX S-Mode as
control variable of the integrated ventilation controller.
The room operator units determine the CO
measurement (NDIR). The sensor provides exact measurements at all times and
does not require maintenance or recalibration thanks to an integrated, stable
reference light source. The CO
members and serves in KNX S-Mode as control variable of the integrated
ventilation controller.
The background-lit symbol informs on the current level of CO
colors green / orange /
poor air quality. The display can be switched on or off by another bus member, e.g.
switch or timer.
Wall-mounted sensors and room operator units for KNX S-Mode and KNX LTE-Mode CM2N1602en_01
Functionality / Use
concentration via infrared absorption
2
concentration can be transmitted to other bus
2
red of the background lighting indicate
in the room. The
2
good / moderte /
19 / 40
2013-07-04