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Thermatel® Model TG1 Thermal Dispersion Switch Thermatel TG1 provides a two-wire, intrinsically safe circuit between the probe and remote din rail enclosure. The switch is suitable for liquid or gas flow, level, or interface detection using the proven thermal dispersion technology. Literature Select Your LanguageDeutschFrançaisItalianoRussianUK EnglishUS English Additional Tools:            Measurement Principle: Using thermal dispersion technology, the TG1 detects heat transfer which reduces the temperature difference between the sensors. The electronics compare the electrical signal from the sensor against the set point and provide a relay actuation. Features: LEDs provide visual flow indication 24 VDC input power mA output signal for diagnostics and repeatable flow/level indication Adjustable set point and time delay SPDT Alarm relay Applications: Low flow detection High temperature operation High viscosity Coating Interface detection Options: Probe materials of construction Probe process connections Probe length Low flow body for very low flow rate detection