Electronic Design

Measure RTD Sensors without a Precision Current Source

Traditionally, resistance-temperature-detector (RTD) sensor resistance is measured by applying a precision current source and measuring the developed voltage. This approach usually requires a ...
EDN

A two-wire temperature transmitter using an RTD sensor

Designing an analog circuit can be a frustrating experience, as noted by Nick Cornford in his Design Idea (DI), “DIY RTD for a DMM.” With a fortnight’s struggle, I completed the design of 4 mA to 20mA ...
Electronic Design

Active Emulator Supports Multiple RTD Wiring, Sense Configurations

Before running a formal test with multiple resistance temperature detector (RTD) sensors, it is often necessary to calibrate and debug a data-acquisition system to verify basic functionality. The ...
EDN

Overvoltage Protection for RTD-Based Measurement Systems

Editor's note: I am pleased to bring you an excellent RAQ by Yao Zhao, a product application engineer with the China design center in ADI Beijing. RTD (resistance temperature detectors) can provide ...