Sensing element is 3 or 6 meters long to permit attaching across the surface of a coil to guard against freezing at any point. When any 30 cm or more of this element senses a temperature as low as the control setpoint, it will ΓÇ£switch offΓÇ¥. A special version is available with bulb and 2 m capillary, range 24/+18 ┬░C for clamp on or immersion purposes. SPDT change over contacts permit the use of an alarm signal.
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