RTDs

RTDs, resistance temperature detectors, are usually made of highly pure platinum metal. Their resistance varies in direct and repeatable relationship to temperature. RTD platinum temperature sensors have long-term stability and tight tolerance over a wide temperature range. They are used for applications in variety of electronic instruments, white goods, HVAC, energy generation industries and machinery controls. The operating temperature of an RTD is greater than a ceramic thermistor and the changes from one degree to the next are small compared to a thermistor.