Monitoring device for monitoring a temporary rail connection of two rail portions of a rail and rail connection system having such a monitoring device

A rail connection system for creating and monitoring a temporary rail connection of two rail portions of a rail, the rail connection system comprising:

• at least one fishplate;
• a first clamping device for clamping said at least one fishplate to a first rail portion;
• a second clamping device for clamping said at least one fishplate to a second rail portion;
• and
• a monitoring device including:
• a first fixing element to be fixed to the first rail portion between said first and second clamping devices;
• a second fixing element to be fixed to the second rail portion between said first and second clamping devices;
• a first distance sensor for measuring a first distance between said first and second fixing elements;
• a second distance sensor for measuring a second distance between said first fixing element and said first clamping device;
• and
• a connecting element interconnecting said first and second fixing elements;
• wherein said first distance sensor is disposed in said connecting element.

A monitoring device for monitoring a temporary rail connection of two rail portions of a rail, the monitoring device comprising:

• a first fixing element to be fixed to a first rail portion;
• a second fixing element to be fixed to a second rail portion;
• a first distance sensor for measuring a first distance between said first and second fixing elements;
• and
• a second distance sensor for measuring a second distance between said first fixing element and a first clamping device of the temporary rail connection;
• said first distance sensor configured to measure said first distance in a rail longitudinal direction.