Temperature Sensor Input Module
The EKE-Trainnet® Temperature Sensor Input (TSI) module provides measured temperature values to the train computer’s CPU.
It acquires the signals from the NTC temperature sensors (resistance measurement) or from Pt100 and Pt1000 sensors and converts them into temperature values expressed in degrees Celsius.
Key Features
The EKE-Trainnet® TSI5226 has six measurement channels. Three sensor types are supported (must be same for all six channels): NTC thermistor, Pt100 and Pt1000. Measurement range is -25 to +125 °C for the NTC thermistor, and -110 to +325 °C for Pt100 and Pt1000 sensors. All sensor types have an over range indication. Each channel is isolated from each other, thus a fault in one channel will not affect the others. The temperature sensors can be connected using 2-wire, 3-wire or 4-wire schemes, providing flexibility.
The embedded processor also implements diagnostic functions and reports to the train computer’s CPU module if it suspects that the input values cannot be trusted. The EKE-Trainnet® TSI detects the temperature sensor as well as cable faults and input channel faults.
The measurement resolution is 0.01 °C, with accuracy better than ±1 °C within the measurement range.
The module has its own 32-bit embedded processor that uses factory calibration values to convert measurement values to degrees Celsius with the best possible accuracy.
