Overview

For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are

temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind

of thermistor. In this sensor, the resistor is actually a small strip of Platinum with a resistance of 100 or 1000 ohms at

0°C, thus the name PT100/PT1000. Compared to most NTC/PTC thermistors, the PT type of RTD is much more stable

and precise (but also more expensive) PT's have been used for many years to measure temperature in laboratory and

industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and

stability.