Brooks Instrument 3809EB2CADQA1Q1 Variable Area Flow Meter

Brooks Instrument MT3809 metal-tube variable-area flow meter (rotameter) provides direct visual indication and precise gas- or liquid-flow measurement in demanding high-pressure, high-temperature service. Built on Brooks’ VA technology, the MT3809 uses a calibrated metal tube that expands with flow to yield a linear, easy-to-read scale for process monitoring. Available with 316 stainless steel housing options and a range of inlet/outlet configurations, it is designed for rugged industrial and laboratory use, including chemical processing, oil and gas, and energy applications. Key specifications include an accuracy up to ±2% of full scale, water flow up to 100,000 L/h (about 440 gpm), and an operating temperature range from -198°C to 420°C, with ingress protection options such as IP66/IP67 or NEMA 4X depending on size and configuration; many variants support multiple connection types (NPT, flange, or compression) to suit different installations. Some models offer electronics integration or fieldbus capability through Brooks’ Smart Meter Manager systems, broadening monitoring and alarm options while preserving the simplicity and reliability of a metal-tube VA meter.