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. 

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COMPLIANCE:
EN 50155, EN 45545
Technical Specification for Temperature Sensor Input Module

Key Features

Six Measurement Channels

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.

Diagnostic Functions

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.

 

High Measurement Resolution

The measurement resolution is 0.01 °C, with accuracy better than ±1 °C within the measurement range.

32-bit Embedded Processor

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.

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Technical Specification for Temperature Sensor Input Module

Dimensions (W x H x D):

4 TE x 3 U x 160 mm

Weight:

160 g

Input Power:

5 V DC ± 5 % (310 mA typ., 400 mA max.)

Temperature Range (operational):

-40 °C…+70 °C

MTBF (40 ºC ambient temperature):

2 490 000 h

I/O Connector:

DIN41612-F48 (at front)

Host Interface:

RS-485

Input Channels:

6 NTC, Pt100 or Pt1000.

Connection Type:

2-wire, 3-wire or 4-wire

Measurement Range:

-25 ºC to + 125 ºC for NTC

-110 ºC to + 325 ºC for Pt100 and Pt1000

Resolution:

0.01 ºC

Accuracy:

Better than ± 1 ºC (3- or 4-wire)