PRTD Conditioning Circuit and Temperature Controller

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Replacement Parts

Rochester Electronics and Arrow Supply Assurance have partnered with Analog Devices to source products that have been previously discontinued or have become obsolete.

Product Details

The ADT70 provides excitation and signal conditioning for resistance-temperature devices (RTDs). It is ideally suited for 1 kW Platinum RTDs (PRTDs), allowing a very wide range of temperature measurement. It can also easily interface to 100W PRTDs. Using a remote, low cost thin-film PRTD, the ADT70 can measure temperature in the range of -50°C to +500°C. With high performance platinum elements, the temperature change can be extended to 1000°C. Accuracy of the ADT70 and PRTD system over a -200°C to +1000°C temperature range heavily depends on the quality of the PRTD. Typically the ADT70 will introduce an error of only ±1°C over the transducer's temperature range, and the error may be trimmed to zero at a single calibration point.