Honeywell T7414C User Manual

STRAP-ON/OUTSIDE TEMPERATURE SENSOR

T7414C

outdoor-mounted

T7414C
strap-on

GENERAL

The Strap-on Temperature Sensor is used to detect the
supply or return water flow temperature on the pipe work.

The Outside Air Temperature Sensor is used in heating,
ventilating and air conditioning systems to detect the outside
temperature for reset of the main setpoint in weather­dependent control systems.

MODELS

OS-No.

T7414C1004

T7414C1012

type / sensing

element

strap-on /

outdoor / Pt1000

strap-on /

outdoor / NTC20

mounted using

clamp band /

screws

clamp band /

screws

T7414C

PRODUCT DATA

FEATURES

• Pt1000 / NTC20 temperature sensing element

• Small size

• Easy mounting

• Fully encapsulated housing

SPECIFICATIONS

Ambient limits

Operating temperature

- Strap-on -30...+110 °C (-22...+230 °F)

- Outdoor -30...+70 °C (-22...+158 °F)

)

Transport / storage temp. -30...+70 °C (-22...+158 °F
Humidity 5...95%rh, non-condensing

Safety

Protection standard IP65 as per EN60529
Flame-retardant housing V1 as per UL94

Housing Plastic

Dimensions See page 2

Weight 60 g

Mounting Pipe and wall

Cable length approx. 1 m

Temperature sensor

Sensing element Pt1000, NTC20kΩ

Sensing range

- Strap-on -30...+110°C (-22...+230°F)

- Outdoor -30...+70°C (-22...+158°F)

Response time

- Strap-on Pt1000

- Strap-on NTC20kΩ

- Outdoor Pt1000

- Outdoor NTC20kΩ

Sensitivity

-Pt1000 ≈ 3.85Ω / K

-NTC20kΩ 20 kΩ at 25 °C, non-linear

Accuracy

- Pt1000 DIN IEC751 Class B
∆T/K = 0.3 + 0.005 • ⎪t⎪ (t = °C)

- NTC20kΩ 0,3 K at 25 °C

Resistance

-Pt1000 1000Ω at 0 °C

-NTC20kΩ 20kΩ at 25 °C

τ

≈ 36 s

0.5

τ

≈ 45 s

0.5

τ

≈ 240 s

0.5

τ

≈ 300 s

0.5

® U.S. Registered Trademark EN0B-0475GE51 R0907

Copyright © 2007 Honeywell Inc. • All rights reserved

T7414C STRAP-ON /OUTSIDE TEMPERATURE SENSOR

DIMENSIONS

20

5

48

7.3

15

18.5

18.5 18.5

Fig. 2. T7414C outdoor-mounted

50

Fig. 1. Dimensions (in mm)

MOUNTING AND INSTALLATION

OUTDOOR

The outdoor air temperature sensor should be mounted on
the wall of buildings having windows of the main occupancy
rooms or on the coldest side (N-NW side).

It should not be subjected to direct sunshine and be mounted
on an open facade so that it can detect all weather conditions.

The mounting height should be 2/3 of the way up wall on up
to three-story buildings or between the second or third floor
on taller buildings.

Avoid mounting the sensor above windows, doors, air
extractors or other heat sources, under a balcony, the eaves,
or in a wall niche.

The cable conduit through the wall must be sealed to prevent
measurement errors by warm air circulation.

Fasten the sensor with the two supplied screws at the
selected place on the wall as shown in Fig. 2.

STRAP-ON

The strap-on temperature sensor consists of a sensor
housing and a clamp band with an adjustable lock for
mounting on pipes up to a diameter of 28 mm.

The sensor is equipped with a 1 m-long two-lead connecting
cable.

The strap-on sensor must be mounted onto the water pipe
with the clamp band at a minimum distance of 1.5 m from the
mixing valve. Avoid mounting the sensor near heat sources,
as its measurement could then be influenced by warm air
circulation. Fasten the sensor as shown in Fig. 3.

Fig. 3. T7414C strap-on mounted

Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell GmbH
Böblinger Straβe 17
D-71101 Schönaich
Phone: [phone]
Fax: [phone]
http://ecc.emea.honeywell.com

Subject to change without notice. Printed in Germany

EN0B-0475GE51 R0907