TFL 201
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Catalog excerpts

TFL 201 - 1

22.030/1 TFL 201: Frost-protection monitor/limiter with capillary-tube sensor How energy efficiency is improved Demand-led, large-scale monitoring of installation parts as required, without auxiliary energy. Areas of application Temperature monitoring in air heaters, water pipes and air ducting. Especially suitable for compact applications. Features • Temperature range: –5 to +15 °C • Contact rating: 4 mA, 6 V to 10 A, 250 V • Gold-plated silver contacts • Switching point and switching difference can be adjusted • Sealable • 2 s time constant in water at 0.5 m/s • 1.5, 3 or 6 m copper capillary tube Technical description • Transparent cover made of impact-resistant thermoplastic • Ambient temperature: –5 to +70 ° C • IP 65 • Active from 10 cm capillary length in switching temperature • Standard housing-mounted plug with cable connector for cables of 6 to 10 mm in diameter min. as gold contacts 2) min. Time constant in air 0.3 m/s in water 0.5 m/s Active length of capillary tube 3) Wiring diagram Factory setting Tolerance of switching difference Perm. temp. at head of instrument 4) Degree of protection Protection class XSd = fixed XSd = variable limiter Setting range Contact rating as silver contacts 1) Switching difference (Average values) K Permissible sensor temp. monitor limiter Dimension drawing Fitting instructions Declaration on materials Variants (otherwise as standard version) TFL 201 F101 TFL 201 F601 Capillary tube, 1.5 m long; with 3 holders, Xsd = fixed Capillary tube, 6.0 m long; with 5 holders, Xsd = fixed Accessories 0296936 000* Bracket for rail: top-hat rail EN 50022, 35 × 7.5 or 35 × 15 0303167 000* Five additional holders for capillary tube *) Dimension drawing or wiring diagram are available under the same number If under inductive load, take RC circuit into account. If the contacts are ever loaded higher than 160 mA, 50 V, the gold plating will be damaged. The contacts are then classed only as silver contacts, since they lose the characteristics of gold contacts. The monitor always reacts to the coldest place (minimum length is 10 cm). The head of the instrument must be fitted at a place which is warmer than that of the sensor. Operation Normally, contacts 1-3 are closed. Whenever the temperature falls below the lower switching point (set value), the contacts switch over from 1-3 to 1-2. When the temperature exceeds the upper switching point, the contacts switch back from 1-2 to 1-3. F021 limiter with mechanical lock When the temperature has again risen by the switching difference XSd, the contacts can be reset manually from 1-2 to 1-3 (

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TFL 201 - 2

22.030/2 TFL Explanation of type codes F Y (Function) 0 = Xsd = fixed 1 = Xsd = variable 2 = limiter Additional technical data CE conformity complies with: Low-Voltage Directive 2006/95/EC EMC Directive 2004/108/EC Technical notes Wiring diagram Monitor Dimension drawing Sauter Components RC circuit under inductive load For the optimum RC circuitry, refer to the specifications supplied by the manufacturers of the relays, contactors etc. If these are not available, the inductive load can be reduced by applying the following rule of thumb (not binding): • Capacity of the RC circuitry (µF) ≥...

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TFL 201 - 3

Sauter Components Printed in Switzerland Right of amendment reserved © Fr. Sauter AG, CH-4016 Basle 7122030003 07

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