A meter group is a set of meters that you can apply to an asset record. Any meter group that is associated with the rotating item is automatically applied to any assets that are created for that item.
A pump is a rotating item. On a pump, meters might track inlet pressure, outlet pressure, and vibrations. Meters are common to all pumps that share an item number. Instead of having to add these meters to each asset record created for a rotating item, create a meter group with this collection of pump-related meters and associate it with the rotating item. Each time you create an asset record for the pump, the meter group, and its meters are automatically associated with the asset record.