Leakage checking and calibrating of a liquid delivery system
First Claim
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1. A method of leakage checking of a valve of a liquid delivery system comprising at least one channel, having the valve and a flow sensing device, and a pressure source arranged downstream of the at least one channel and being capable of generating variable pressures, the method comprising:
- pressurizing the at least one channel with the pressure source;
measuring a value of flow rate within the at least one channel with the flow sensing device; and
comparing the measured value of flow rate for at least two different pressure values provided by the pressure source or to a known zero point value of the flow sensing device; and
deriving an indication of leakage of the valve from the comparison of the measured flow rates.
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Abstract
A liquid delivery system having at least one channel, at least one valve within that channel, at least one flow sensing device within that channel, and a pressure source downstream of the valve capable for generating variable pressures.
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3 Claims
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1. A method of leakage checking of a valve of a liquid delivery system comprising at least one channel, having the valve and a flow sensing device, and a pressure source arranged downstream of the at least one channel and being capable of generating variable pressures, the method comprising:
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pressurizing the at least one channel with the pressure source; measuring a value of flow rate within the at least one channel with the flow sensing device; and comparing the measured value of flow rate for at least two different pressure values provided by the pressure source or to a known zero point value of the flow sensing device; and deriving an indication of leakage of the valve from the comparison of the measured flow rates. - View Dependent Claims (2, 3)
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Specification