Honeywell T7414C User Manual

T7414C

STRAP-ON/OUTSIDE TEMPERATURE SENSOR

PRODUCT DATA

FEATURES

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.		type / sensing		mounted using
			element
	T7414C1004		strap-on /		clamp band /
			outdoor / Pt1000		screws
	T7414C1012		strap-on /		clamp band /
			outdoor / NTC20		screws

•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	-30...+110°C (-22...+230°F)
- Strap-on
- Outdoor	-30...+70°C (-22...+158°F)
Response time	τ0.5 ≈ 36 s
- Strap-on Pt1000
- Strap-on NTC20kΩ	τ0.5 ≈ 45 s
- Outdoor Pt1000	τ0.5 ≈ 240 s
- Outdoor NTC20kΩ	τ0.5 ≈ 300 s
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

® 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

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.

Fig. 2. T7414C outdoor-mounted

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