Honeywell T7412B, T7412C, T7412D, T7412A, T7412E PRODUCT DATA

T7412A,B,C,D,E

ROOM TEMPERATURE SENSOR

PRODUCT DATA

Hon eywe ll

Hon eywe ll

°C

20

25

15

30

Hon eyw el l

-

°C

+

GENERAL

The T7412A,B,C,D,E Room Temperature Sensors are used
for room temperature measurement and remote control-point
adjustment (CPA) or remote setpoint adjustment (SPA) in
heating, ventilating and air conditioning systems.

Models are available with PT1000, PT100, NTC 20kΩ, or
BALCO 500 sensing elements and with or without remote
control or setpoint adjustment.

They are suitable for the following control systems:

• Excel IRC

• Excel Plus and High Performance Excel Plus

• Excel EMC

• Excel 5000

• Excel Classic

• MicroniK 100 and MicroniK 200

or other systems using PT1000, PT100, NTC 20kΩ, or
BALCO 500 sensing elements.

As a passive product, this sensor is not subject to the
requirements of CE.

FEATURES

• PT1000, PT100, NTC20kΩ, or BALCO 500

temperature sensing element

• Sensing range 0...50 °C (32...122 °F)

• High-precision sensor elements

• Attractive housing

• Occupied/unoccupied slide switch

• Fan speed switch

• Push-button for time extension or other purposes and

LED for status indication

SPECIFICATION

Ambient Limits

Operating temperature 0...50 °C (+32...+122 °F)
Transport and storage temp. -25...+70 °C (-13...+158 °F)
Humidity 5...95%rh, non-condensing

Safety

Protection class II
Protection standard IP30
Flame retardant housing V0
Housing Plastic (ABS)
Dimensions (H x W x D) 130 x 80 x 34 mm

(5.12 x 3.15 x 1.34”)
Weight 100 g
Mounting Wall, surface, or European

outlet box

Connections

Screw terminals for 2x1.5 mm

Potentiometer/Switches

CPA/SPA potentiometer circuit see Fig. 1 on page 3
Occupancy switch or extend
push-button Potential-free contact

Occupancy

- occupied closed < 100Ω

- unoccupied open > 40kΩ
Fan speed switch Resistor Network

- auto-OFF-I-II-III

2

conductors

® U.S. Registered Trademark EN0B-0240GE51 R1009
Copyright © 2009 Honeywell Inc. • All rights reserved

T7412A,B,C,D,E ROOM TEMPERATURE SENSOR

Temperature Sensor

Order Numbers

Sensing element PT1000, PT100, BALCO 500,

NTC 20kΩ

Characteristic see EN0B-0476GE51 for

characteristic

Sensing range 0...+50 °C (+32...+122 °F)
Response time τ

≈ 2.5 min

0.5

Resistance

PT1000 1000Ω at 0 °C
PT100 100Ω at 0 °C
BALCO 500 500Ω at 23.3 °C
NTC 20kΩ 20kΩ at 25 °C

Sensitivity

PT1000 ≈ 3.85Ω / K
PT100 ≈ 0.385Ω / K
BALCO 500 ≈ 2Ω / K
NTC 20kΩ non-linear characteristic

Accuracy

PT1000 / PT100 DIN IEC 751 Class B

0.3 K + 0.5% • ⏐t⏐(t in °C)

BALCO 500 ±1Ω at 23.3 °C
NTC 20kΩ 0.3 K at 25 °C

OS no. temperature sensing element*

T7412A1000

T7412A1018 PT1000

T7412A1026 BALCO 500

T7412A1059 PT100

T7412B1008

T7412B1016 PT1000 + CPA

T7412B1024 BALCO 500 + SPA 15...30 °C

T7412B1040 PT1000 + SPA 15...30 °C

T7412B1057 PT1000 + CPA

T7412C1006

T7412C1030 PT1000 + CPA and occ./unoccupied switch

T7412D1004

T7412E1001

T7412E1027

For potentiometer values and circuits, see Fig. 1.
* Other temperature sensing elements and different housing

colors are available, upon request.

Models

NTC 20kΩ

NTC 20kΩ + CPA

NTC 20kΩ + CPA + occ./unoccupied switch

NTC 20kΩ + CPA + Fan Speed Switch
NTC 20kΩ + push-button + C-Bus

connector
NTC 20kΩ + push-button + indication LED

model no. / function

T7412A T7412B T7412C T7412D T7412E

temperature sensor

Ho neyw el l Ho neyw el l

remote setpoint

adjustment

°C

2520

30

15

Ho neyw el l

-

control-point adjustment

occupied/

unoccupied switch

Ho neyw el l

°C

+

-

fan speed switch

Ho neyw el l

auto

0123

°C

+

°C

-

+

occupancy extend

push-button

LED or PIT C-Bus

connector

Ho neyw el l

EN0B-0240GE51 R1009

2

T7412A,B,C,D,E ROOM TEMPERATURE SENSOR

INSTALLATION

• Mount these units at the inside wall of the room to be

heated or air conditioned, away from doors, windows, and
heat sources.

• They should be located approx. 1.5 m above the floor and

at minimum 50 cm away from the nearest wall.

• Do not mount in niches, book shelves, behind cabinets or

curtains, or where it could be exposed to solar radiation.

• Seal the conduit opening to avoid false temperature

measurement due to draft from the conduit.

NOTE: Use shielded wiring in areas with high EMI. Keep

15 cm (5.9’’) minimum distance between sensor lines
and 230 Vac power lines.

wiring run maximum length

sensor to controller 200 m (660 ft)

Connections for T7412A:

T7412A1000

1

NTC

20kohm

2

T7412A1018

1

PT1000

2

T7412A1026

1

BALCO

500

2

The offset due to wire resistance per 10 m of distance from
the sensor to the controller is stated in the following table:

type of wire

0.5 mm2

(AWG20)

1.0 mm2

(AWG17)

1.5 mm2

(AWG15)

PT1000 PT100 BALCO 500

0.18 °C

(0.324 °F)

0.09 °C

(0.162 °F)

0.06 °C

(0.108 °F)

temperature offset

1.8 °C

(3.24 °F)

0.9 °C

(1.62 °F)

0.6 °C

(1.08 °F)

0.3 °C

(0.54 °F)

0.15 °C

(0.27 °F)

0.1 °C

(0.1 °F)

T7412A1059

1

PT100

2

Connections for T7412B: Connections for T7412C:

T7412B1016

1

PT1000

2

953 ohm

4

CPA

100 ohm

5

T7412D1004

3

NTC20kohm

4

fan-speed switch

auto-OFF-I-II-III

5

6

1

BALCO

500

2

4

5

6

T7412B1024

10k ohm

SPA

10k ohm

11k ohm

15 °C

30 °C

1

PT1000

2

4

5

6

T7412B1040

10k ohm

SPA

10k ohm

11k ohm

15 °C

30 °C

T7412B1008 (NTC)

T7412C1057 (PT1000)

3

PT1000

or

NTC20kohm

4

CPA

100k ohm

6

Connections for T7412E:Connections for T7412D:

T7412E1001

3

NTC20kohm

*

5

6

7

A

C-bus

B

8

10

*occupancy extend push-button

connector

T7412C1006 (NTC)

T7412C1030 (PT1000)

3

PT1000

or

NTC20kohm

4

CPA

100k ohm

*

5

6

*occupancy switch

T7412E1027

1

LED

2

3

NTC20kohm

4

*

5

6

*occupancy extend push-button

Fig. 1. Connections

3

EN0B-0240GE51 R1009

T7412A,B,C,D,E ROOM TEMPERATURE SENSOR

,C,D,E

12

1 2 3 4 5 6

T7412A

MOUNTING AND DIMENSIONS

80 (3.15”)

130 (5.12”)

Fig. 3. Mounting and dimensions

Fig. 2. Connector positions

20

(0.79”)

34 (1.34”)

Five mounting holes with
a diameter of 4 mm (0.16”)
for three (two) 3.5-mm
(0.14”) screws mounted
in positions 1 (preferred)
or 2.

11

(0.43”)

T7412B

1 1

2

60 (2.36”)

1, 2

30 (1.18”)

60 (2.36”)

2

107 (4.21”)

Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell GmbH
Böblinger Strasse 17
71101 Schönaich, Germany
Phone: [phone]
Fax: [phone]
http://ecc.emea.honeywell.com

Subject to change without notice. Printed in Germany
EN0B-0240GE51 R1009