Thermistor probes have a thermally active resistor composed of metal oxides normally encapsulated in epoxy or glass. A typical thermistor shows a large negative, nonlinear change in resistance per degree of temperature change. We offer a variety of thermistor probes including 400-, 500- and 700-series, and 400-series flexible probes. The 500-series probes are recommended where small size is a requirement. Industrial probes are available for industrial applications, chemical processes, production lines, ovens, furnaces, and vessels. You can also visit our online custom probe configurator, if you need a different style thermistor probe.