Method and device for monitoring a fluid flow delivered by means of a pump
AssigneeAlldos Eichler KG
InventorsKlaus Müller, Sergei Gerz
Life of this patent
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Abstract
The invention relates to a method and a device for monitoring a fluid flow delivered by means of a pump. In the method the pressure distribution of the fluid is continuously or quasi-continuously measured as actual values in partial areas of the pump stroke and compared with desired values. In the device at least one pressure sensor is provided for the continuous or quasi-continuous measurement of the pressure of a fluid at least in partial areas of the pump stroke and a comparator is provided for comparing the measured actual values of the pressure with desired values.
Claims24
A method for monitoring a fluid flow delivered by a pump, the method comprising:
- determining piston positions from the angular positions of a motor driving the piston, wherein the pressure of the fluid is measured at least in partial areas of the pump stroke in continuous or quasi-continuous manner as actual values relative to the determined piston position and said actual values are compared with desired values of the pressure over the piston position, wherein the pressure distribution at the end of the suction stroke is monitored and wherein cavitation is detected if the actual pressure value remains in the vacuum range.
A method for monitoring a fluid flow delivered by a pump, the method comprising:
- determining piston positions from the angular positions of a motor driving the piston, wherein the pressure of the fluid is measured at least in partial areas of the pump stroke in continuous or quasi-continuous manner as actual values relative to the determined piston position and said actual values are compared with desired values of the pressure over the piston position, wherein the pressure distribution at the start of the pressure stroke is monitored and a cavitation fault is indicated if the actual pressure value remains in the vacuum range.
A method for monitoring a fluid flow delivered by a pump, the method comprising:
- determining piston positions from the angular positions of a motor driving the piston, wherein the pressure of the fluid is measured at least in partial areas of the pump stroke in continuous or quasi-continuous manner as actual values relative to the determined piston position and said actual values are compared with desired values of the pressure over the piston position, wherein the pressure distribution at the start of the pressure stroke is monitored and a report indicating air/gas in the dosing chamber is given when the actual pressure gradient is lower than desired pressure gradients.
A method for monitoring a fluid flow delivered by a pump, the method comprising:
- determining piston positions from the angular positions of a motor driving the piston, wherein the pressure of the fluid is measured at least in partial areas of the pump stroke in continuous or quasi-continuous manner as actual values relative to the determined piston position and said actual values are compared with desired values of the pressure over the piston position, wherein the pressure distribution in the vicinity of pump dead points is monitored.
A method for monitoring a fluid flow delivered by a pump, the method comprising:
- determining piston positions from the angular positions of a motor driving the piston, wherein the pressure of the fluid is measured at least in partial areas of the pump stroke in continuous or quasi-continuous manner as actual values relative to the determined piston position and said actual values are compared with desired values of the pressure over the piston position, wherein the pressure during the pressure stroke is monitored, wherein in the case of actual values dropping below the desired pressure value, a leak report indicating a leak in the pressure line is given.
Dependencies are inferred from the claim text.