ifm electronic has introduced the new TK Series temperature switch for temperature monitoring. The compact TK Series switch and its 316 stainless steel RTD probe measure only 72 mm and are directly mounted into the pipe.
Two mechanical setup dials rotate to quickly establish the set and reset point temperatures. The switch’s high accuracy assures that the set-point does not drift and calibration is not required. Two bright LEDs indicate switching and operating status.
The units are fitted with a locking device to prevent unintentional set-point changes
With no moving parts to stick in the process or break, the TK Series temperature switch maintains high performance and long term stability. Electrical connection is achieved with an industry standard Micro DC connector.
The operating temperature range is -25 to 140deg;C with two models available: PNP, (NO/NC) output with adjustable hysteresis and PNP, (2xNO) output with fixed hysteresis.
ifm’s temperature switch uses a Pt1000 RTD for temperature measurement. The Pt1000 RTD is a platinum resistor that exhibits a resistance of 1000 at 0°C. Platinum is used because of its optimal linearity and stability with temperature. Temperature is sensed by measuring the change in resistance of the RTD. As temperature increases, the resistance of the RTD also increases. The signal from the RTD is evaluated by a microprocessor inside the temperature control monitor. The microprocessor, along with electrical components, is mounted on a flexible, temperature-stable polyamide film. RTDs do not require the cold junction compensation of a thermocouple and are shock and vibration resistant.
For more information contact Celia de Beer, ifm electronic SA, 086 143 6772, www.ifm.com/za
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