Method and device for measuring pressure of fluid in vessel

Claim 1

A DEVICE FOR CONTINUOUSLY MEASURING A PRESSURE OF FLUID CONTAINING DUST IN A VESSEL, COMPRISING A FIRST PIPE CONNECTED AT ONE END TO A VESSEL CONTAINING FLUID TO BE MEASURED, A THROTTLE MECHANISM AT THE OTHER END OF SAID FIRST PIPE, A SECOND PIPE CONNECTED AT ONE END TO SAID THROTTLE MECHANISM AND A FEED-GAS FLOW REGULATING VALVE AT THE OTHER END OF SAID SECOND PIPE, A THIRD PIPE CONNECTED AT ONE END TO SAID FEED-GAS FLOW REGULATING VALVE AND ADAPTED TO BE CONNECTED AT THE OTHER END TO A FEEDGAS SUPPLY SOURCE, A VESSEL PRESSURE DETECTING PIPE CONNECTING WITH SAID FIRST PIPE AT ONE END, A CONVERTER CONNECTED TO THE OTHER END OF SAID PRESSURE DETECTING PIPE FOR CONVERTING A DETECTED PRESSURE TO AN ELECTRIC SIGNAL, AN INDICATING AND RECORDING METER TO WHICH SAID CONVERTER IS COUPLED, A FIRST DETECTING PIPE FOR DETECTING FEED-GAS PRESSURE CONNECTED TO SAID FIRST PIPE ON THE LOWER PRESSURE SIDE OF SAID THROTTLE MECHANISM, A SECOND DETECTING PIPE FOR DETECTING FEED GAS PRESSURE CONNECTED TO SAID SECOND PIPE ON THE HIGHER PRESSURE SIDE OF SAID THROTTLE MECHANISM, A DIFFERENTIAL PRESSURE SETTING DEVICE TO WHICH SAID DETECTING PIPES ARE CONNECTED, A FEED GAS SUPPLY REGULATOR, A TRANSMISSION MECHANISM FOR TRANSMITTING THE DEVIATION OF THE DETECTED DIFFERENTIAL PRESSURE FROM THE SET DIFFERENTIAL PRESSURE CONNECTED BETWEEN SAID PRESSURE SETTING DEVICE AND THE FEED-GAS SUPPLY REGULATOR, AND A FEED-GAS FLOW REGULATING VALVE TO WHICH SAID FEED GAS SUPPLY REGULATOR IS CONNECTED.