RTD Thermometers, Pt100, Thermistors, Elements
Precision Thermistor Sensors for AirTemperature Measurements
3-A Sanitary RTD Probes with Class A Accuracy
General Purpose RTD (PT100) Probe
Self-Adhesive Polyimide Fast Response RTD Surface Sensors (Class A)
Pt100 for Industrial, airsteam and laboratory Applications
RTD (Pt100) Utility Handle Probe
Self Adhesive Silicone Patch RTD Surface Sensors
PT100 RTD Sensor with M12 Connector
Hermetically Sealed RTD Sensors
Integral Cable RTD Probes with Class A Accuracy Sanitary
Air Temperature Sensor for Indoor and Outdoor Use
Bolt-On Pt100 RTD Sensor with Aluminum Flag Housing
Technical Learning
Origin Story of the RTD / Pt100
The same year (1821) that Thomas Seebeck made his discovery about thermoelectricity (Seebeck effect, see thermocouples), Sir Humphrey Davy announced that the resistivity of metals showed a marked temperature dependence. Fifty years later, Sir William Siemens proffered the use of platinum as the element in a resistance thermometer. His choice proved most propitious, as platinum is used to this day as the primary element in all high-accuracy resistance thermometers, Pt100, Pt1000 etc.
In fact, the Platinum Resistance Temperature Detector, or RTD Pt100, is used today as an interpolation standard from the oxygen point (-182.96°C) to the antimony point (630.74°C)...
RTD Pt100 vs Thermocouple
It is not practical to compare RTDs (Pt100 and others) and thermocouples generally. However, if we compare their performance in terms of specific criteria, we can see which is best suited for specific applications. Thermocouples are best for working at high temperatures. New manufacturing techniques have improved the measurement range of RTD probes, but more than 90% of RTDs are designed for temperatures below 400°C.
In contrast, some thermocouples can be used at up to 2500°C. Thermocouples are generally cheaper than RTDs...