Brooks Instrument 3810 Metal Tube Variable Area Flow Meter

The Brooks Instrument 3810 Series Metal Tube Variable Area Flow Meter delivers direct, visual flow indication in a rugged metal-tube rotameter design. In operation, a floating element rises within a tapered metal tube as process flow increases, and the float’s height corresponds to a calibrated reading along the tube. This inline meter belongs to Brooks Instrument’s 3810 Series, providing a simple, continuous flow measurement solution for process lines without relying on electronics. Because it is a passive flow device, no power source is required to obtain a reading—the flow rate is indicated directly by the position of the float. The metal-tube construction supports durability in demanding environments, and the scale on the tube enables fast, at-a-glance verification of process conditions. The 3810 Series designation identifies this family within Brooks Instrument’s range of flow meters, making it a straightforward choice when a metal-tube variable area flow meter is the right fit for your installation.