Data Sheet for Product

ManualsBrandsSiemens ManualsSensors TemperatureEU Declaration of Conformity QAxxx (passive senors)

745

Room Temperature

Sensors

QAA20...

• Passive sensors for acquiring the temperature in rooms.

• Range of use 0…50 °C / <85 % r. h.

Use

In heating, ventilation and air conditioning plants for acquiring the room temperature.

Type summary

Type reference

Sensing element

Range of use Time constant

QAA2010

Pt 100 0...50 °C Approx. 7 min

QAA2012

Pt 1000

0...50 °C Approx. 7 min

QAA2030

NTC 10k

0...50 °C Approx. 7 min

Ordering

When ordering, please give name and type reference, e.g.:

Room temperature sensor QAA2010

Equipment combinations

The room temperature sensors are suited for use with all types of controllers that can

handle analog, passive sensor signals.

1745P01

CE1N1745en

2014-07-30

Building Technologies

Summary of content (4 pages)

PAGE 1
1745P01 745 Room Temperature Sensors QAA20... • Passive sensors for acquiring the temperature in rooms. • Range of use 0…50 °C / <85 % r. h. Use In heating, ventilation and air conditioning plants for acquiring the room temperature. Type summary Type reference Sensing element Range of use Time constant QAA2010 Pt 100 0...50 °C Approx. 7 min QAA2012 Pt 1000 0...50 °C Approx. 7 min NTC 10k 0...50 °C Approx. 7 min QAA2030 Ordering When ordering, please give name and type reference, e.g.
PAGE 2
Function The sensor acquires the room temperature via its sensing element. The resistance of the sensing element changes as a function of the ambient temperature. The resistance value is used for further handling by a suitable controller. Characteristic: Pt 100 (class B) Accuracy: ∆ϑ [K] R [Ω] 0.8 1745D01 140 1745D02 Sensing element 0.6 0.4 0.2 120 0.0 −0.2 100 −0.4 80 −10 10 20 30 40 50 60 ϑ [°C] −10 0 ϑ [°C] 10 20 30 40 50 60 ∆ϑ [K] R [Ω] 0.
PAGE 3
Mechanical design The units have been designed for wall mounting. They are suited for use with most types of commercially available recessed conduit boxes. The cables can be introduced from the rear (concealed wiring) or from below or above (surface-run wires) through knock-out openings. The units consist of 2 major sections: Housing and base. Both snap together but can be detached again. The base carries the connection terminals.
PAGE 4
Directives and Standards Transport Climatic condition Temperature Humidity Mechanical environmental conditions to IEC 60721-3-2 class 2K3 −25...+65 °C <95 % r. h. class 2M2 Product standard EN 60730-1 Automatic electrical controls for household and similar use EU Conformity (CE) 8000073890 *) UL UL873 http://ul.