Resistance Temperature Detectors (RTDs)

Features

• Excellent long-term stability
• -60ºC to 250ºC operation for Nickel
• -200ºC to 600ºC operation for Platinum
• Values from 100Ω to 1,000Ω
• Small size, fast response time
• Resistant to vibration and thermal shock
• Available in standard DIN class accuracies

Description

Resistance Temperature Detectors (RTDs) are characterized by a linear change in resistance with respect to temperature. RTDs exhibit the most linear signal with respect to temperature of any sensing device. RTDs are specified primarily where accuracy and stability are critical to the application. RTDs operate through the principal of electrical resistance changes in pure metal elements. Spectrum Sensors & Controls offers elements manufactured with platinum, the most common element, as well as nickel. The RTD element consists of a thin film of platinum or nickel which is deposited onto a ceramic substrate and laser trimmed to the desired resistance. Thin-film elements attain higher resistances with less metal and, thus, tend to be loss costly then the equivalent wire-wound element.