User Manual

Ordering and delivery
When ordering, please give name and type reference, e.g.:
Duct temperature sensor QAM2161.040
The sensor is supplied complete with mounting flange AQM63.0 and cable entry gland
M16.
Equipment combinations
All systems or devices capable of acquiring and handling the sensor’s DC 0...10 V or
4...20 mA output signal.
Function
The sensor acquires the air temperature via its sensing element whose resistance
value changes as a function of the temperature. This change is converted to a
DC 0...10 V or 4...20 mA output signal, depending on the type of sensor. The output
signal corresponds to the selected temperature range.
Output signal, terminal I1
0 10 20 30 40
700
400
300
800
900
600
500
100
0
200
Burden [Ohm]
[DC V]
Operating voltage
Admissible
range
Inadmissible
range!
1762D02en
Mechanical design
The duct temperature sensor consists of housing, printed circuit board, connection
terminals and probe.
The 2-sectional housing is comprised of base and removable cover (snap-on design).
The measuring circuit and the setting element are located on the printed circuit board
inside the cover, the connection terminals on the base.
Cable entry is made via the M16 cable entry gland (IP 54) supplied with the sensor
which can be screwed into the housing. Probe and housing are rigidly connected.
The sensor is designed for screwed or flanged mounting.
It can be fitted as follows:
• With the mounting flange supplied with the sensor (recommended), which is to be
fitted to the sensor and then secured in accordance with the required immersion
length, or
• Without mounting flange (making use of the maximum immersion length). For that
propose, the housing has 4 holes for fitting the sensor directly to the air duct
1 2 3
1 2 3
1762Z01
Range
10 V
5 V
0 V
5 V
U1
20 mA
12 mA
4 mA
12 mA
I1
Measuring range
Test function active
Burden diagram
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Setting element
2/6
Siemens Duct temperature sensors QAM2161.040, QAM2171.040 CE1N1762en
Building Technologies 2014-07-30