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About Thermistors
Thermistors are thermally-sensitive devices whose electrical resistance varies with temperature. Unlike RTDs and thermocouples, thermistors do not have standards associated with their resistance vs. temperature characteristics or curves. There are two main types of thermistors: positive temperature coefficient (PTC) and negative temperature coefficient (NTC). With PTC thermistors, electrical resistance increases as temperature rises. With NTC thermistors, resistance drops in a nonlinear manner with a rise in temperature. To reduce this nonlinearity, multiple thermistor elements are sometimes combined in a single package. Although thermistors are more accurate than some other types of temperature sensors, they have a limited temperature range. Nevertheless, their high outputs and fast response times make them suitable for many temperature-sensing applications.
Engineering Web: Thermistors - Machine Design
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Diode Thermistors For High Temperatures | Machine Design Diode Thermistors For High Temperatures |
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Getting temperatures right | Machine Design Thermistors perform best in applications that need high-accuracy over a relatively narrow temperature range. |
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Other Sensors | Machine Design Temperature sensors: Temperature sensors include thermocouples, resistive temperature detectors (RTDs), and thermistors. |
