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[. . . ] T7413A / VF20 / WPF20
IMMERSION TEMPERATURE SENSOR
PRODUCT DATA
FEATURES
· · · · PT1000 or NTC20k temperature sensing element Wide sensing range High accuracy Choice of two different immersion well lengths
SPECIFICATION
Nominal value PT1000 NTC20k Accuracy PT1000 NTC20k Sensitivity PT1000 NTC20k Response time with brass well 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 3. 85 / K -934. 5 / K at 25 °C (non-linear)
GENERAL
These Immersion temperature sensors are used in the following hot or cold water control systems · · · · · · · Excel 5000 MicroniK 200 MicroniK 100 Excel Classic Excel Plus High Performance Excel Plus Excel EMC
or other systems using PT1000 or NTC20k temperature sensing elements. [. . . ] VF20T VF20L VF20NT VF20LN T7413A1009 sensor type length in mm (inches) L1 T1 185 (7. 28) 152 (5. 98) -25. . . +130 °C 338 (13. 30) 305 (12. 00) 185 (7. 28) 152 (5. 98) -25. . . +130 °C* 338 (13. 30) 305 (12. 00) sensing range -25. . . +130 °C 193 (7. 59) 160 (6. 29) 152 (5. 98) 305 (12. 00) 152 (5. 98) 305 (12. 00) immersion well VFHT VFL VFNT VFLN VFHT not included VFHT VFL
NTC 20 k
PT1000 T7413A1041 185 (7. 28) -25. . . +130 °C* T7413A1058 338 (13. 30) WPF20T 185 (7. 28) -25. . . +130 °C NTC 20 k (two sensors) WPF20L 338 (13. 30) *When a stainless steel immersion well is used. Maximum permitted temperature: 150 °C.
Immersion Well
OS-no. VFHT VFL VFNT VFLN length mm (inch) T2 135 (5. 31) 300 (11. 81) 135 (5. 31) 300 (11. 81) immersion well brass, R1/2" / BSP1/2", PN16 stainless steel, R1/2" / BSP1/2" PN25 Pmax 15 bar 25 bar max. flow rate 8 m/s 3 m/s 15 m/s 6 m/s
DIMENSIONS
50 (1. 97)
L1 6 (0. 23)
33 (1. 3)
65 (2. 55) T1
7 (0. 28)
case hole diameter allows Pg9 cable
Fig. Immersion temperature sensor, dimensions in mm (inches)
SW 22
12 (0. 47)
T2
25 (0. 98)
Fig. Immersion wells, dimensions in mm (inches)
EN0B-0363GE51 R0907
2
T7413A / VF20 / WPF20 IMMERSION TEMPERATURE SENSORS
INSTALLATION
wiring run Sensor to controller max. length 200 m (660 ft) type of wire 0. 5 mm2 (AWG20) 1. 0 mm2 (AWG17) 1. 5 mm (AWG15)
2
temperature offset PT1000 0. 18 °C (0. 324 °F) 0. 09 °C (0. 162 °F) 0. 06 °C (0. 108 °F)
Offset due to wire resistance per 10 m of distance from sensor to controller, when using the T7413A (PT1000):
NOTE: Use shielded wiring in areas with high EMI. Keep 15 cm (5. 9'') minimum distance between sensor lines and 230 Vac power lines.
ELECTRICAL CONNECTION
The wiring of the temperature sensor must be in accordance with the overall wiring circuit diagram. [. . . ] WPF20 wiring
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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