Excitation Technique: RTDs and Thermistors being passive elements need a current excitation source to make measurements. Highly stable and accurately matched current sources with low drift are ...

The old saying “if it ain’t broke, don’t fix it” cautions against tampering with something that performs reliably and regularly proves its worth. Arguably, this advice applies to the circuit design ...

Therefore, a 4-wire configuration results in the best performance. RTD Configuration Circuit A high precision and accurate RTD sensor measurement requires precise signal conditioning, ...

Figure 2 shows a simplified block diagram of the temperature sensor design. The design uses Semitec 103AP-2 thermistor, a Vishay Precision Group 500Ω ±0.1% precision resistor, Intersil’s ISL28634 ...

However, once RTD accuracy is understood, more questions may still remain. What avenues are available if an RTD is being used for process control, and the standard tolerance bandwidth according to IEC ...

An earlier Design Idea described how to linearize the output of an RTD (resistance-temperature-detector) sensor and how to calculate the resistor values using a spreadsheet (Reference 1). That idea ...

Endress+Hauser’s iTHERM TrustSens hygienic RTD is heralded as the world’s first self-calibrating temperature sensor. Its self-calibration process functions in situ and provides the necessary ...

Transmitters vs. Direct Wiring When making temperature measurements, two ways have traditionally been employed to get process readings back to a monitoring and control system. One method is to utilize ...

Planar resistance temperature detector, RTD, can be manufactured with microelectronics processing techniques. However, the manufactured planar resistor requires an extra step for adjustment of the ...