Wide range flow measuring device having two Coriolis meters arranged in series and a bypass line to bypass the second Coriolis meter

A measuring system for measuring a mass flow rate, a density, a temperature or a flow velocity, the measuring system comprising:

• a main line;
• a first Coriolis measuring device arranged in the main line;
• a second Coriolis measuring device arranged in series with the first Coriolis measuring device in the main line;
• a bypass line which is configured to bypass the second Coriolis measuring device;
• a first valve arranged in the bypass line, the first valve being configured to automatically open and close depending on a pressure in the bypass line without any external control;
• and
• a computing unit which is connected to the first Coriolis measuring device and to the second Coriolis measuring device,
• wherein,
• the first Coriolis measuring device is designed for a higher maximum flow rate than the second Coriolis measuring device.