RTD measurement circuits The two most common methods to measure an RTD are constant current excitation (Figure 1 ) and constant voltage excitation (Figure 2 ).

The circuit uses the popular Pt100 RTD, which has a resistance of 100 Ω at 0°C. Its temperature coefficient of 0.00385 Ω/Ω/ºC produces a 38.5-Ω increase in resistance from 0°C to 100°C.

An RTD is a temperature sensor that operates on the measurement principle that a material’s electrical resistance changes with temperature.

In a typical resistance temperature detector (RTD) measurement application, the delta-sigma converter often is configured in a ratiometric topology using a constant current excitation source.

Acromag’s newest addition to the Busworks® NT Series of expandable remote Ethernet I/O modules is the NT2620 Series RTD/resistance module. Designed to be a cost-effective modular solution, it supports ...

Measurement Specialties Inc.have released a sensor for the accurate measurement of temperature which uses Nickel RTD sensing technology and withstands harsh environmental influences such as dust and ...

Rosemount 3144S Temperature Transmitter offers 0.05-degrees Celsius accuracy, 20-year stability, advanced diagnostics and ...