Low Range PTFE-PFA Flow Meter without Valve

Aalborg, L3C-L01-01-SA, Low Range PTFE-PFA Flow Meter (without Valve), 75 mL/minFeatures:Constructed from PFA, PTFE and PCTFEIndividually leak testedLeak Integrity. Flow meter are individually tested on a Mass Spectrometer Leak Detector and certified to a leak integrity rating of 1 x 10-7 sccs Helium or better.Incorporating the principles of traditional rota-meter flow technology, these rugged PTFE-PFA flow meter offer solutions to low to medium flow range measurements of highly corrosive or ultra-pure liquids. Model meter are constructed of inert materials: PFA, PTFE and PCTFE. The unique design construction brings about an inert, mechanically rigid flow meter line. Flow meter are also resistant to external, ambient corrosives. For the protection of personnel flow meter is supplied with a safety shield.Principles of Operation. A cylindrical float freely moving inside a tapered flow tube comprises the flow measurement element of PTFE - PFA flow meters. The translucent PFA flow tube is installed vertically in-line in the liquid stream. As flow takes place the float is propelled up inside the flow tube. The area between the float and the inside diameter of the flow tube gradually increases with increasing flow and correspondingly the pressure lifting the float decreases until the weight of the float and its buoyant force come to equilibrium. At equilibrium the top of the float is lined up with a scale graduation on the flow tube denoting a discrete rate of flow.