Milk meter for measuring a flow rate of a milk flow

A milk meter comprising a sensor for measuring a flow rate of a milk flow, provided with an inlet to which, in use, the milk flow is supplied, an outlet where the milk flow leaves the milk meter, in use, and a liquid flow path extending from the inlet to the outlet, wherein in the liquid flow path a valve is included which can selectively take up a first or second valve position, wherein in the first valve position at least a first part of the liquid path is open and in the second valve position at least the first part of the liquid path is closed, wherein for operating the valve an operating opening is included in the valve for setting an operating pressure for selectively providing a pressure difference between the operating opening and the liquid flow path for exerting a force on the valve for enabling the operating of the valve, the operating opening being exterior to the liquid flow path, the milk meter being configured such that:

• if at the operating opening a first pressure prevails and upstream of the valve in the liquid flow path a second pressure prevails, with the first pressure being higher than the second pressure and the difference between the first and the second pressure being greater than a first predetermined value, the valve is configured to take up the first valve position for enabling to measure, using the sensor, the flow rate of the milk flow;
• if at the operating opening a third pressure prevails and upstream of the valve in the liquid flow path a fourth pressure prevails, with the difference between the third pressure and the fourth pressure being less than a predetermined second value, and the third pressure and the fourth pressure each being less than the first pressure, the valve is configured to take up the second valve position for enabling cleaning of the milk meter;
• and
• if at the operating opening a fifth pressure prevails and upstream of the valve in the liquid flow path a sixth pressure prevails, with the difference between the fifth pressure and the sixth pressure being less than a predetermined third value, and the fifth pressure and the sixth pressure each being greater than the second pressure, the valve is in the second valve position for assuming a rest mode.