Industrial Metal Tube Rotameter is available in cast steel, 304 and 316 grade stainless steel, polypropylene, polyvinyl chloride or Teflon lined construction. The Metal Tube Rotameter is used for measuring the flow rate of translucent opaque liquid and gases under high temperature and pressure. The Metal Tube Rotameter is enclosed with liquids or gases in a closed metal tube that allows these to travel through a cross-sectional area, so as to measure the flow rate. Industrial Metal Tube Rotameter is provided with high and low flow alarms to facilitate ease of operation.