User manual HONEYWELL LF20
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Manual abstract: user guide HONEYWELL LF20
Detailed instructions for use are in the User's Guide.
[. . . ] T7411A / LF20 / LF20-C / C7068
DUCT TEMPERATURE SENSORS
PRODUCT DATA
FEATURES
· PT100, PT1000, or NTC20k temperature sensing element · Wide sensing range · High accuracy · Stainless steel probe
T7411A LF20
C7068
LF20-C
SPECIFICATION
Nominal value PT100 PT1000 NTC20k Accuracy PT100 / PT1000 100 at 0 °C 1000 at 0 °C 20 k at 25 °C IEC751 Class B 0. 3 K +0. 5% · |t| (t in °C) 0. 3 K at 25 °C
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. [. . . ] · All rights reserved
EN0B-0361GE51 R0907
T7411A / LF20 / LF20-C / C7068 DUCT TEMPERATURE SENSORS
Models
OS number LF20 LF20-C T7411A1001 T7411A1019 T7411A1043 C7068A1007 C7068A1007-5m sensor type NTC20k NTC20k PT1000 PT1000 PT100 NTC20k NTC20k sensing range -40. . . +80 °C -40. . . +80 °C -40. . . +80 °C -40. . . +80 °C -40. . . +80 °C 0. . . +70 °C 0. . . +70 °C length in mm (inches) L1 T1 338 (13. 30) 305 (12. 00) 305 (12. 00) -185 (7. 28) 152 (5. 98) 338 (13. 30) 305 (12. 00) 185 (7. 28) 152 (5. 98) cable length: 1. 5 m cable length: 5 m
DIMENSIONS OF T7411A / LF20
47 (1. 85) 23 (0. 91) L1 max. 275 mm (10. 8 in. )
LF20-C
30
6 (0. 23)
6
4 8 55 (2. 17) 50 (1. 97)
19. 5 (0. 75)
T7411A, LF20
L1 33 (1. 3) 6 (0. 23)
19. 5 (0. 75)
65 (2. 55)
T1 7 (0. 28) case hole diameter allows Pg9 cable
Fig. Dimensions of T7411A / LF20 and LF20-C in mm (inches)
EN0B-0361GE51 R0907
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T7411A / LF20 / LF20-C / C7068 DUCT TEMPERATURE SENSORS
INSTALLATION
wiring run sensor to controller max. length 200 m (660 ft)
INSTALLATION OF C7068
The temperature offset due to wire resistance per 10 m distance from sensor to controller, when using the T7411A (PT100 / PT1000) is stated in the following table:
type of wire PT1000 2 0. 5 mm (AWG20) 0. 18 °C (0. 324 °F)
1. 0 mm (AWG17) 0. 09 °C (0. 162 °F) 1. 5 mm (AWG15) 0. 06 °C (0. 108 °F)
2 2
PT100 1. 8 °C (3. 24 °F)
0. 9 °C (1. 62 °F) 0. 6 °C (1. 08 °F)
NOTE: Use shielded wiring in areas with high EMI. [. . . ] Installation of the C7068 in mm (inches)
3
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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 Strae 17 D-71101 Schönaich Phone: (49) 7031 63701 Fax: (49) 7031 637493 http://ecc. emea. honeywell. com Subject to change without notice. [. . . ]
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