T7414A / VF20A / WPF20A
STRAP-ON TEMPERATURE SENSORS
PRODUCT DATA
GENERAL
The T7414A/VF20A/WPF20A Strap-on Temperature Sensors are used for temperature measurement on warm/hot water pipes or solar collectors.
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.
FEATURES
•PT1000 or NTC 20kΩ temperature sensing element
•Wide sensing range
•High accuracy
Models
OS no. |
|
description |
|
sensing range |
T7414A1008 |
|
Strap-on PT1000 |
|
0...+110 °C |
|
Temperature Sensor |
|
(+32...+230 °F) |
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VF20A |
|
Strap-on NTC20kΩ |
|
0...+110 °C |
|
Temperature Sensor |
|
(+32...+230 °F) |
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WPF20A |
|
Two strap-on NTC20kΩ |
|
0...+110 °C |
|
Temperature Sensors |
|
(+32...+230 °F) |
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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 |
τ0.5 ≈ 1 minute |
Electrical connection |
|
T7414A/VF20A |
terminals for 2 x 1.5 mm² cable |
WPF20A |
terminals for 4 x 1.5 mm² cable |
Ambient Limits (wiring box) |
|
Transport and |
-35...+70 °C (-31...+158 °F) |
storage temperature |
|
Humidity |
5…95% r.h., non-condensing |
Safety (terminal box) |
|
Protection standard |
IP54 as per EN60529 (T7414) |
|
IP30 (VF20, WPF20) |
Flame retardant |
V1 as per UL94, Plastic (PC) |
Housing |
|
Dimensions |
See Fig. 1 on page 2 |
Weight |
100 g |
® U.S. Registered Trademark |
|
EN0B-0364GE51 R0608 |
Copyright © 2008 Honeywell Inc. • All rights reserved |
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