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[. . . ] Fast Temperature Sensors for Industrial and HVAC Applications
STF
PRODUCT DATA AND MOUNTING INSTRUCTIONS
SPECIFICATIONS
Nominal value STF21 (PT100) STF31 (PT1000) Accuracy STF21/31 Sensitivity STF21 (PT100) STF31 (PT1000) Response time Well Pressure rating PN16 (nominal) 3-wire type 0. 385 / K 3. 85 / K IEC751 Class A ±(0. 15 K +0. 2% · |t|) (t in °C) 100 at 0 °C 1000 at 0 °C
0. 5 = 2. 5 seconds
FEATURES
· · · · · Cost-effective high-accuracy solution. Materials in contact with medium are made of stainless steel. [. . . ] STF21-75 STF21-220 STF31-75 STF31-220 sensor type / length PT100 / 75 mm PT100 / 220 mm PT1000 / 75 mm PT1000 / 220 mm -20. . . +260 °C (-4. . . +500 °F) sensor temp. Using a hexagonal wrench, screw the R1/2" screwing connection into the process line or the immersion well until snug. With the nut still loose, slide the sensor to the desired depth. Tighten the nut as tightly as possible by hand. Now use an open-end wrench to rotate the nut another min. ½ of a rotation.
ELECTRICAL CONNECTION
Wire the temperature sensor in accordance with Fig. The terminals are insensitive to polarity. STF sensors are 3-wire types; thus, if the controller is suitably equipped, the influence of cable lengths can be compensated for. However, if the controller does not support 3-wire connection, the sensors can also be used in a 2-wire manner (connect 1-3). In order to minimize the influence of EMC, keep wiring to the controller as short as possible.
2 1 3 4
Fig. [. . . ] Box 1254 D-71099 Schönaich Phone: (49) 7031-637-02 Fax: (49) 7031-637-850 http:/honeywell. de/fema Subject to change without notice. Printed in Germany
EN0B-0474GE51 R1105 [. . . ]
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