RTD input module SCM5B35 Series

analogprinted circuit board-mounted

Linearized 4-Wire RTD Input Module Input Configuration: 4 Wire RTD Type: 100 Ohm Platinum Input Range: -100 to 100 (°C) Output Range: 0 to +5 V Mechanical Format: Modular plug-in-board The high-accuracy SCM5B35 4-wire RTD-input module offers a significant advantage over 3-wire measurement techniques (Figure below). The SCM5B35 measures only the voltage dropped across the RTD and almost completely ignores the resistance or length of the RTD lead wires. The SCM5B34 3-wire RTD module provides lead resistance compensation, but requires equal lead resistances, while the SCM5B35 4-wire does not. Each SCM5B35 RTD-input module provides a single channel of RTD input which is filtered, isolated, amplified, linearized, and converted to a high-level analog voltage output. This voltage output is logic switch controlled, which allows these modules to share a common analog bus without the requirement of external multiplexers.