(1) vacuum valve to close the vacuum valve, the unit stopped running, to maintain a certain degree of vacuum drying system. (2) automatic pneumatic safety valve to prevent sudden stop when the unit water ring pump system to Roots pump and vacuum drying system intrusion. (3) When the differential pressure valve unit starts to operate, start the water ring pump first and then gradually generate the pressure difference at both ends of the pressure differential valve. When the pressure difference valve reaches a certain value, the valve will be opened automatically to allow most of the gas in the system to flow into the water ring Pump. When the atmosphere gradually through the air pump into the water ring pump, the differential pressure across the valve and then gradually reduced, so off valve, so the air pump immediately began to work properly, the role of differential pressure valve is to shorten the atmospheric pump before normal work Take time. (4) start and stop the role of water level check valve to prevent water ring pump water back. Operation sequence is as follows: first start water ring pump, the system gas diameter by the Roots pump (at this time to promote Rotor Rotor rotor) into the water ring pump from the water separator to the atmosphere. When pumping absolute pressure 50Torr start Roots pump 2, when the absolute pressure to 20Torr and then start Roots pump 1, the final system pressure up to 0.088Torr, under normal circumstances can be maintained below 1Torr.
Hot Sale Mass Flow Meter
Zhejaing Sealand Technology Co., Ltd. is a trustworthy manufacturer of Mass Flow Meter, Mass Flowmeter, Mass Meter, Flow Meter, Flowmeter, ATEX, IECEx & CE approved. The product range covers different size from DN03 to DN150, and bigger sizes are being developed.
Sealand mass flow meter is designed and produced according to world`s latest Coriolis technology with exelent appearance, stability and accuracy to measure mass flow rate of a fluid traveling through a tube, widely applied to alternative energy, oil & gas, chemical, food & beverage, industrial energy, marine, power, pulp & paper, water & wastewater industries, etc.
Mass flow meter measures the mass based on Coriolis effort. The operating principle involves inducing a vibration of the tube through which the fluid passes. The vibration, though not completely circular, provides the rotating reference frame that gives rise to the Coriolis effect. While specific methods vary according to the design of the flow meter, sensors monitor and analyze changes in frequency, phase shift & amplitude of the vibrating flow tubes. The changes observed represent the mass flow rate and density of the fluid.
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Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeter.com