Honeywell KTF20, DKF20, T7415A User Manual
Fig. 1. The KTF20
GENERAL
The T7415A//KTF2/DKF20 Cable-type Bulb Temperature
Sensor can be used as
• immersion sensors
• return air sensors
The sensors can be employed for hot and cold water
installations in the following control systems:
• Excel 5000
• MicroniK 200
• MicroniK 100
• Excel Classic
• Excel Plus
• High Performance Excel Plus
• Excel EMC
or other systems using PT1000 or NTC 20kΩ temperature
sensing elements.
T7415A / KTF20 / DKF20
CABLE-TYPE BULB
TEMPERATURE SENSORS
PRODUCT DATA
FEATURES
• PT1000 or NTC 20kΩ temperature sensing element
• Wide sensing range
• High accuracy
Models
OS no. description sensing range
T7415A1007
T7415A1015
KTF20
DKF20
KTF20-B Bulk shipment of 50 KTF20 see above
Cable-type Bulb PT1000
Temperature Sensor
Cable-type Bulb PT1000
Temperature Sensor
Cable-type Bulb NTC20kΩ
Temperature Sensor
Cable-type Bulb NTC20kΩ
Mean value Sensor
SPECIFICATION
Nominal value
PT1000 1000 Ω at 0 °C
NTC20kΩ 20 kΩ at 25 °C
Accuracy
PT1000 IEC751 Class B
0.3 K +0.5% • |t| (t in °C)
NTC20kΩ 0.3 K at 25 °C
Sensitivity
PT1000 ≈ 3.85 Ω / K
NTC20kΩ ≈ -934.5 Ω / K at 25 °C (non-linear)
Response time
immersion well app.
duct application
of 1 m/s (3.3 ft/s)
Electrical connection
T7415A/KTF20 2 m cable, 2-core
DKF20 2 m cable, 3-core
Ambient Limits (wiring box)
Storage temperature -25...+70 °C (-13…+158 °F)
Humidity 5…95% rh, non-condensing
Safety IP64 as per EN 60529
Dimensions see Fig. 2 on page 2
τ
≈ 10 s
0.5
τ
≈ 2 min at air velocity
0.5
-20...+100 °C
(-4...+212 °F)
-20...+300 °C
(-4...+572 °F)
-20...+100 °C
(-4...+212 °F)
-20...+100 °C
(-4...+212 °F)
® U.S. Registered Trademark EN0B-0362GE51 R0907
Copyright © 2007 Honeywell Inc. • All rights reserved
T7415A / KTF20 / DKF20 CABLE-TYPE BULB TEMPERATURE SENSORS
6.5
DIMENSIONS
Cable-Type Bulb Sensor
(0.26”)
brass bulb
60.5 (2.38”)
2000 (78.74”)
Fig. 2. Dimensions of the cable-type bulb sensor in mm (inches)
INSTALLATION
wiring run max. length
Sensor to controller 200 m (660 ft)
Offset due to wire resistance per 10 m of distance from
sensor to controller, when using the T7415A (PT100):
type of wire temperature offset PT100
0.5 mm2 (AWG20)
1.0 mm2 (AWG17)
1.5 mm2 (AWG15)
0.18 °C (0.324 °F)
0.09 °C (0.162 °F)
0.06 °C (0.108 °F)
INSTALLATION OF KTF20/DKF20
Fig. 3. KTF20 / DKF20 mounting into the immersion well
PVC cable with identifier
6
(0.24”)
30 (1.18”)
WIRING OF DKF20
controller no. 1
controller no. 2
white (3)
green (2)
brown (1)
Fig. 4. Sensor branching for two separate controllers
with DKF20
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: (49) 7031 63701
Fax: (49) 7031 637493
http://ecc.emea.honeywell.com
Subject to change without notice. Printed in Germany
EN0B-0362GE51 R0907
NOTE: Use shielded wiring in areas with high EMI.
Keep 15 cm (5.9’’) minimum distance between
sensor lines and 230 Vac power lines.
Fig. 5. Averaging with 2 x DKF20
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