RTD (Resistance Temperature Detector) is a sensor whose resistance changes as its temperature changes. The resistance increases as the temperature of the sensor increases. The resistance vs temperature relationship is well known and is repeatable over time. An RTD is a passive device. It does not produce an output on its own. External electronic devices are used to measure the resistance of the sensor by passing a small electrical current through the sensor to generate a voltage. Typically 1 mA or less measuring current, 5 mA maximum without the risk of self-heating.
il sensore di temperatura a termistore NTC serie MFL è realizzato con acciaio inossidabile alimentare FDA SUS304 . si installa facilmente sul circuito della macchina da caffè con due spine da 6.3 mm.
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