qae21_n1781

CE1N1781en 13.02.2008 Building Technologies

1781

Symaro™ Immersion Temperature

Sensors QAE21...

Passive sensors for acquiring the water temperature in pipes and tanks. Use

The QAE21… immersion temperature sensors are for use in ventilation and air condi-tioning plants for: • Controlling or limiting the flow temperature • Limiting the return temperature • Controlling the DHW temperature

Type summary

Typ Outfit Immersion length

Nominal pressure

Sensing element

Degree of protection

QAE2110.010 Including protection pocket with threaded nipple G ½ A 100 mm PN 10 Pt 100 IP 54 QAE2110.015 Including protection pocket with threaded nipple G ½ A 150 mm PN 10 Pt 100 IP 54 QAE2111.010 With clamp for protection pocket 1) 100 mm PN 4) Pt 100 IP 42 (IP 54) 3) QAE2111.015 With clamp for protection pocket 1) 150 mm PN 4) Pt 100 IP 42 (IP 54) 3)

QAE2112.010 With clamp for protection pocket 1) 100 mm PN 4) Pt 1000 IP 42 (IP 54) 3) QAE2112.015 With clamp for protection pocket 1) 150 mm PN 4) Pt 1000 IP 42 (IP 54) 3) QAE2120.010 Including protection pocket with threaded nipple G ½ A 100 mm PN 10 LG-Ni 1000 IP 42 (IP 54) 3) QAE2120.015 Including protection pocket with threaded nipple G ½ A 150 mm PN 10 LG-Ni 1000 IP 42 (IP 54) 3) QAE2121.010 With clamp for protection pocket 1) 100 mm PN 4) LG-Ni 1000 IP 42 (IP 54) 3) QAE2121.015 With clamp for protection pocket 1) 150 mm PN 4) LG-Ni 1000 IP 42 (IP 54) 3) QAE2122.013 Including compression fitting with threaded nipple G ½ A max. 130 mm 2) PN 16 LG-Ni 1000 IP 42 (IP 54) 3)

QAE2130.010 With clamp for protection pocket 1) 100 mm PN 4) NTC 10k IP 42 (IP 54) 3)

QAE2130.015 With clamp for protection pocket 1) 150 mm PN 4) NTC 10k IP 42 (IP 54) 3) QAE2140.010 Including protection pocket with threaded nipple G ½ A 100 mm PN 10 T1 IP 42 (IP 54) 3)

1) Protection pocket required (not included as standard) 2) Adjustable immersion length 3) IP 54 with cable entry gland M16 (not included as standard) 4) Depending on the type of protection pocket used

1781

P01

2/6

Siemens Immersion temperature sensors QAE21... CE1N1781en Building Technologies 13.02.2008

Ordering

When ordering, please give name and type reference, e.g. : Immersion temperature sensor QAE2120.010 or protection pocket ALT-SS100

Equipment combinations

All systems or devices capable of acquiring and handling the sensor's passive output signal.

Function

The sensor acquires the medium temperature via its sensing element whose resistance value changes as a function of the temperature. The signal is delivered for further handling by a suitable controller.

Characteristic Accuracy

−40 −30 −20 −10 0 10 20 30 40 50 60 70 80 90 100 110 120 130

1800

1600

1400

1200

1000

800

600

R [Ω]

ϑ

1781

D01

[°C] −40 −30 −20 −10 0 10 20 30 40 50 60 70 80 90 100 110 120 130

1.5

1.0

0.5

0.0

−0.5

−1.0

−1.5

∆ϑ [K]

ϑ

1781

D02

[°C] Characteristic Accuracy

−40 −30 −20 −10 0 10 20 30 40 50 60 70 80

140

120

100

80

R [Ω]

[°C]

1781

D03

ϑ100 110 120 130

160

90 −40 −30 −20 −10 0 10 20 30 40 50 60 70 80

0.8

0.4

0.0

−0.4

∆ϑ [K]

ϑ

1781

D04

[°C]

−0.8

100 110 12090 130 Characteristic Accuracy

−40 −30 −20 −10 0 10 20 30 40 50 60 70 80

1400

1200

1000

800

R [Ω]

[°C]

1781

D07

ϑ100 110 120 130

1600

90 −40 −30 −20 −10 0 10 20 30 40 50 60 70 80

0.8

0.4

0.0

−0.4

∆ϑ [K]

ϑ

1781

D08

[°C]

−0.8

100 110 12090 130

Sensing elements

LG-Ni 1000

Pt 100 (class B)

Pt 1000 (class B)

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−30 −20 −10 0 10 20 30 40 50 60 70 80

3000

2600

2200

1800

3400

R [Ω]

[°C]

1781

D05

ϑ

3600

2000

2400

2800

3200

90 100 110 120 130 −30 −20 −10 0 10 20 30 40 50 60 70

5.0

2.0

0.0

−3.0

−5.0

∆ϑ [K]

[°C]

1781

D06

ϑ80

1.0

3.04.0

−1.0

−2.0

−4.0

90 100 110 120 130


1847

D09

100

1000

10000

100000

1000000

-30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 [°C]ϑ

R [Ω]

[°C]ϑ-1.8

-1.6-1.4-1.2-1.0-0.8-0.6-0.4-0.20.00.20.40.60.81.01.21.41.61.8

-30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130

∆ϑ [K]

1847

D08

R Resistance value in Ohm ϑ Temperature in degrees Celsius ∆ϑ Temperature differential in Kelvin

Mechanical design

The immersion temperature sensors consist of the following components: • Two-sectional plastic housing comprised of base with connection terminals and re-

movable cover (snap-on design) • Immersion rod complete with sensing element The connection terminals can be accessed after removing the cover. With the QAE2110.010 and QAE2110.015, cable entry is made via a cable entry gland M16. With the other types of sensors, cable entry is via a grommet which, if required, can be replaced by a cable entry gland M16 (IP 54).

Accessories (not included in standard delivery)

Name Material Nominal pressure

Type of sealing Immersion length

Type reference

Compression fitting V4A (1.4571) PN 16 Threaded with sealing means --- AQE2102 Protection pocket Brass (CuZn37) PN 10 Threaded with sealing means 100 mm ALT-SB100 Protection pocket Brass (CuZn37) PN 10 Threaded with sealing means 150 mm ALT-SB150 Protection pocket V4A (1.4571) PN 16 Threaded with sealing means 100 mm ALT-SS100 Protection pocket V4A (1.4571) PN 16 Threaded with sealing means 150 mm ALT-SS150 Protection pocket V4A (1.4571) PN 40 With flange for flat seal 100 mm ALT-SSF100 Protection pocket V4A (1.4571) PN 40 With flange for flat seal 150 mm ALT-SSF150

For other protection pocket accessories, refer to Data Sheet N1194.

T1 (PTC)

NTC 10k

Legend

4/6


Engineering notes

Protection pockets made of Brass may not be used with nominal pressures over PN 10 or at temperatures over 130° C. For higher nominal pressures or temperatures up to max. 135 °C the protection pocker is to omit (max. PN 16) or a protection pocket made of stainless steel (V4A) is required (see table accessories).

The max. media temperature for the QAE2130.xx is 125 °C!

Mounting and installation notes

Depending on use, the sensor should be located as follows:

• For flow temperature control: In the heating flow: – Directly after the pump if the pump is located in the flow – 1.5 to 2 m after the mixing valve if the pump is located in the return

• For return temperature limitation: In the return at a location where the temperature can be correctly acquired

The sensor should be installed in an elbow such that the immersion rod or the protec-tion pocket faces the direction of flow. The water must be well mixed where the tem-perature is acquired. This is downstream from the pump or, if the pump is mounted in the return, at least 1.5 m after the mixing point.

The sensor should be mounted such that the cable does not enter from the top.

With all types of sensors, the immersion length must be a minimum of 60 mm!

The sensor must not be covered by lagging.

To fit the sensor, a threaded fitting or T-piece G ½ must be welded into the pipe.

permitted: not permitted:

1781

Z02

min.60 mm

1781

Z01

a b

c d

G ½

• For sensors with non-sealing threaded nipples G ½, sealing means must be used with the threaded connection (e.g. hemp, Teflon tape or similar)

• Tighten compression fitting AQE2102 on the sensor's immersion rod – When tightening for the first time:

Turn the nut about 1 ½ turns until strong resistance is felt. Then, slightly loosen the nut again and retighten ¼ turn

– For premounted compression fittings or repeated fitting: Screw the nut on until finger-tight. Then, tighten with a spanner ¼ turn for the final fit

Mounting Instructions are printed on the packaging.

.

.

.

.

.

Mounting positions

Mounting

Note!

.

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Technical data

Measuring range −30...+125 °C for NTC-Type −30...+130 °C other types

Sensing element refer to "Type summary" Time constant

With protection pocket Without protection pocket

approx. 30 s approx. 8 s

Measuring accuracy refer to "Function" Immersion length refer to "Type summary" Nominal pressure refer to "Type summary" Degree of protection of housing refer to "Type summary" Safety class III to EN 60 730 Screw terminals for 1 x 2.5 mm2 or x 1.5 mm2 Cable entry via

Grommet Cable entry gland

for 5.5...7.2 mm dia. cable M 16 x 1.5

Perm. cable lengths refer to Data Sheet of controller Operation

Climatic condition Temperature (housing) Humidity (housing)

to IEC 721-3-3 class 3K5 –40...+70 °C 5...95 % r.h.

Transport Climatic condition Temperature Humidity Mechanical environmental conditions

to EC 721-3-2 class 2K3 –25...+70 °C <95 % r.h. class 2M2

Base polycarbonate, RAL 7001 (silver-grey)

Cover polycarbonate, RAL 7035 (light-grey)

Immersion rod stainless steel to DIN 17 440, steel 1.4571

Protection pocket brass (CuZn37) Compression fitting stainless steel 1.4404, 1.4435,

1.4571 Cable entry gland M 16 x 1.5 PA, RAL 7035 (light-grey) Packaging corrugated cardboard Incl. Packaging

QAE2110.010 QAE2110.015 QAE2111.010 QAE2111.015 QAE2112.010 QAE2112.015 QAE2120.010 QAE2120.015 QAE2121.010 QAE2121.015 QAE2122.013 QAE2130.010 QAE2130.015 QAE2140.010

approx. 0,21 kg approx. 0,23 kg approx. 0,13 kg approx. 0,15 kg approx. 0,13 kg approx. 0,15 kg approx. 0,21 kg approx. 0,23 kg approx. 0,13 kg approx. 0,14 kg approx. 0,19 kg approx. 0,13 kg approx. 0,15 kg approx. 0,21 kg

Functional data

Protective data

Electrical connections

Environmental conditions

Materials and colors

Weight

6/6


Internal diagram

B M 1781

G01

The internal diagram is identical for all types of immersion temperature sensors cov-ered by this Data Sheet. The connecting wires are interchangeable.

Dimensions (in mm)

SW 2

2

60

80

ø 5,5 ... 7,2

1781

M01

G½

A

ø 9

1331

45,5 L

28M16 x 1,5

Typ L

QAE2120.015 150 mmQAE2120.010 100 mmQAE2110.015 150 mmQAE2110.010 100 mm

QAE2140.010 100 mm(IP 54)

60

80

ø 5,5 ... 7,2

1781

M02

SW

22

G½

A

ø 9

1331

45,5 L

ø 6,

5

Typ L

QAE2112.015 150 mm

QAE2111.015 150 mm

QAE2130.015 150 mm

QAE2112.010 100 mm

QAE2130.010 100 mm

QAE2111.010 100 mm

QAE2121.010 100 mmQAE2121.015 150 mm

SW 1

4SW

22 max. 130

ø 6,

5

14

40

G½

A

60

80

ø 5,5 ... 7,2

1781

M03

31,5

31

QAE2110.010 QAE2110.015 QAE2120.010 QAE2120.015 QAE2140.010

QAE2111.010 QAE2111.015 QAE2112.010 QAE2112.015 QAE2121.010 QAE2121.015 QAE2130.010 QAE2130.015

QAE2122.013 AQE2102

© 2004 – 2008 Siemens Switzerland Ltd. Subject to alteration

qae21_n1781

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