Proteus Industries develops, manufactures and markets a full line of liquid flow switches, meters, sensors, and control systems  worldwide

We offer a wide range of network capable, rugged, precision liquid flow sensing and control instruments for the semiconductor equipment, automotive, medical and casting markets. 


Our worldwide customers value Proteus' 40 years of experience and our proven ability to customize flow control products for their complex and specific applications to measure temperature and pressure, improving process control and predicting service shutdown for heat exchangers and other critical equipment.

Our WeldSaver™ is a leading cap loss detector and coolant flow controller for robotic welding applications, and our leak detection system provides the ultimate protection against catastrophic leaks for mission-critical equipment. Our sensors are used around the world to protect thousands of induction furnaces, welding torches, high-power lasers, plasma cutting systems, and semiconductor processing systems. 

Proteus is also the exclusive U.S. distributor of Tofco flow management products, including flow meters for ultrapure liquids, flow controllers, and the Tofpine Manifold System. We pride ourselves on our ability to quickly provide custom engineering, including multi-sensor panels and manifold assemblies.

Proteus family — 2017

Proteus Five Year Warranty

Proteus Industries warrants Proteus-manufactured flow products to be free from defects in materials and workmanship for a period of five (5) years from the date of shipment.

Proteus TUV Certification

TUV USA Inc. hereby certifies that Proteus Industries Inc. has established and applies a quality system for The Design, Manufacture, Calibration and Marketing or Flow Measurement and Control Instruments.
Conflict Minerals Policy

United States government regulations require that companies that register with the Securities and Exchange Commission (SEC) report whether their products incorporate any "conflict minerals". "Conflict minerals" are defined as tantalum, tin, tungsten, and gold.

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Technical Articles

5 Best Practices for Calibrating Your Flow Meter (Flow Sensing) A flow meter is a special device that measures the amount of gas or quantity of liquid or its flow rate moving through the pipe. Too little or too much gas or liquid flowing through the pipe may... (View Full Article)
A Flow Measurement System Finds Alternative Applications (Flow Sensing) The original plan was to develop a flow measurement and control system with leak detection and energy-use calculations for liquid-cooled supercomputers at the Lawrence Livermore National Laboratory. (View Full Article)