User Manual

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Siemens Immersion temperature sensors QAE26.9... CM1N1790en
Building Technologies 2017-12-01
Engineering notes
The permissible electrical line lengths depend on the controller. Refer to the respective
controller's data sheet for more information.
Mounting and installation notes
To mount the immersion temperature sensor, weld a T-junction or a threaded fitting
with a cylindrical pipe thread for a sealing connection inside the thread (Rp ¼) so that
the immersion stem faces the direction of the flow.
In order to ensure temperature acquisition along the entire immersion stem, the
immersion length for the QAE26.9 must be at least 25 mm and 15 mm for QAE26.90,
QAE26.91, QAE26.93 , QAE26.95 and QAE1020.024.
If the connection cable needs to be extended, use a branching box.
Internal diagram
1790G01
The internal diagram applies to all types.
The connections are interchangeable.
Dimensions (in mm)
ca. 310
R ¼
1790M01
1200
40
ø 4
12
min. 25, max. 260
SW 14 SW 14
ø 6
R ¼
1790M02
2000
40
ø 4
12
SW 14 SW 12
L1
L2
Typ
QAE26.90
max.min.
L2
L1
65
125
15
ca. 100
QAE26.91
QAE26.93
QAE26.95
240
465
15
15
15
ca. 160
ca. 275
ca. 500
QAE1020.024
24015
ca. 275
QAE26.9
QAE26.90, QAE26.91
QAE26.93, QAE26.95
QAE1020.024