M-bus remote meter reading system

M-bus is short for meter bus, a twin wire communication system for remote reading of meters by a computer.

Up to 250 meters can be read on one twin wire system.

Advantages are:

Automated reading, avoiding mistakes and labour costs
Readings can be updated as quickly as it takes for a computer to read from each meter.
More information than just heat alone is available to M-bus, such as flow rates and temperatures.
Other meters such as power meters can be read with the same system.
Radio and internet links are available for reading from remote meters

The M-bus communication system is defined in EN 1434 parts 2 & 3 for heat meters and EN 13757 for remote reading of any type of meter.

Data can be stored in a database for analysis or exported for energy billing applications.