Temperature Sensing | IoT Technologies
An IoT-enabled temperature sensor is used in many scientific, commercial, and industrial applications to measure temperature. Temperature sensors can measure temperature with or without contact. A contact temperature sensor, such as the probe on a digital food thermometer, touches the heat source or substance to be measured.
Temperature Sensing – Q&A
Are temperature sensors accurate?
Where do you mount a temperature sensor?
Traditionally, thermostats and room temperature sensors have been mounted approximately 60 inches (152 cm) from the floor. This has been considered an effective height to measure the room temperature and to allow a person to adjust a setpoint while standing.
How long does a temperature sensor last?
Many temperature sensors have a service life of over 10 years. Aging also affects some sensors’ accuracy and cause sensors to slowly lose sensitivity over time. For instance, certain types of temperature sensors decrease their sensitivities by 0.1°C each year.
How many temperature sensors are there? How do I know which one I need?
Negative Temperature Coefficient (NTC) thermistor – A thermistor is a thermally sensitive resistor that exhibits a large, predictable, and precise change in resistance correlated to variations in temperature.
Resistance Temperature Detector (RTD) – An RTD, also known as a resistance thermometer, measures temperature by correlating the resistance of the RTD element with temperature.
Thermocouple – This temperature sensor type consists of two wires of different metals connected at two points.
Semiconductor-based sensors – A semiconductor-based temperature sensor is placed on integrated circuits (ICs). These sensors are effectively two identical diodes with temperature-sensitive voltage vs current characteristics that can be used to monitor changes in temperature.
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