T7411A / LF20 / LF20-C / C7068
DUCT TEMPERATURE SENSORS
PRODUCT DATA
T7411A |
C7068 |
LF20-C |
|
LF20 |
|||
|
|
GENERAL
The T7411A/LF20/LF20-C/C7068 Duct Temperature Sensors are used in ventilating and air conditioning systems to measure discharge, return, or outside air temperature. They are designed for duct mounting. The T7411A is available with two different probe lengths.
These sensors are used 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 PT100, PT1000, or NTC 20kΩ temperature sensing elements.
Further, the C7068 is also suitable for installation in fancoil units or at air outlets.
® U.S. Registered Trademark
Copyright © 2007 Honeywell Inc. • All rights reserved
FEATURES
•PT100, PT1000, or NTC20kΩ temperature sensing element
•Wide sensing range
•High accuracy
•Stainless steel probe
SPECIFICATION
Nominal value |
100 Ω at 0 °C |
|
PT100 |
||
PT1000 |
1000 Ω at 0 °C |
|
NTC20kΩ |
20 kΩ at 25 °C |
|
Accuracy |
|
|
PT100 / PT1000 |
IEC751 Class B |
|
NTC20kΩ |
0.3 K +0.5% • |t| (t in °C) |
|
0.3 K at 25 °C |
||
Sensitivity |
|
|
PT100 |
≈ 0.385 Ω / K |
|
PT1000 |
≈ 3.85 Ω / K |
|
NTC20kΩ |
≈ -934.5 Ω / K at 25 °C |
|
|
(non-linear) |
|
Response time (at air velocity of 5 m/s [16.4 ft/s]) |
||
LF20, LF20-C |
τ0.5 |
≈ 42 s |
T7411 |
τ0.5 |
≈ 45 s |
C7068 |
τ0.5 |
≈ 4 min (at 1 m/s [3.3 ft/s]) |
Electrical connection |
|
|
T7411A/LF20 |
terminals for 2 x 1.5 mm² cable |
|
LF20-C |
5 m cable, 2-core, |
|
|
seawater-resistant, |
|
|
conduit M16x1,5 |
|
C7068 |
1.5-m cable, 2-core |
|
C7068-5m |
5-m cable, 2-core |
|
Ambient Limits |
|
|
Storage temperature |
-35...+70 °C (-31…+158 °F) |
|
Humidity (T7411, LF20) 5…95% rh, non-condensing |
||
Safety (terminal box) |
|
|
Protection standard |
|
|
T7411A |
IP54 |
|
LF20 |
IP30 |
|
LF20-C |
IP65 |
|
C7068 |
IP54 |
|
Flame retardant |
V1 as per UL94 |
|
|
Plastic (PC) |
|
Dimensions |
See Fig. 1 on page 2 |
|
EN0B-0361GE51 R0907
T7411A / LF20 / LF20-C / C7068 DUCT TEMPERATURE SENSORS
Models
|
OS number |
|
sensor type |
|
sensing range |
|
length in mm (inches) |
||
|
|
|
|
L1 |
|
T1 |
|||
|
|
|
|
|
|
|
|
||
|
LF20 |
|
NTC20kΩ |
|
-40...+80 °C |
338 (13.30) |
305 |
(12.00) |
|
|
LF20-C |
|
NTC20kΩ |
|
-40...+80 °C |
305 |
(12.00) |
-- |
|
|
T7411A1001 |
|
PT1000 |
|
-40...+80 °C |
185 |
(7.28) |
152 |
(5.98) |
|
T7411A1019 |
|
PT1000 |
|
-40...+80 °C |
338 |
(13.30) |
305 |
(12.00) |
|
T7411A1043 |
|
PT100 |
|
-40...+80 °C |
185 |
(7.28) |
152 |
(5.98) |
|
C7068A1007 |
|
NTC20kΩ |
|
0...+70 °C |
|
cable length: 1.5 m |
||
|
C7068A1007-5m |
|
NTC20kΩ |
|
0...+70 °C |
|
cable length: 5 m |
||
DIMENSIONS OF T7411A / LF20
47 (1.85) |
L1 |
|
23 (0.91) |
max. 275 mm |
|
(10.8 in.) |
||
|
||
|
LF20-C |
|
0 |
6 (0.23) |
|
3 |
|
|
6 |
|
|
4 |
19.5 |
|
(0.75) |
||
8 |
|
|
|
T7411A, LF20 |
55 (2.17) |
|
|
|
|
50 (1.97) |
L1 |
|
33 (1.3) |
|
6 (0.23) |
65
(2.55)
|
|
|
|
|
|
|
|
|
19.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(0.75) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
T1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
case hole diameter |
|
|
|
||||||||
|
7 (0.28) |
|
|
|
|
|
||||||||||
|
|
|
allows Pg9 cable |
|
|
|
|
|||||||||
|
|
|
|
|
||||||||||||
|
|
|
|
|||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Fig. 1. Dimensions of T7411A / LF20 and LF20-C in mm (inches)
EN0B-0361GE51 R0907 |
2 |
Loading...