Princo Instruments, Inc. is a leading manufacturer and supplier of instrumentation and controls for municipal and industrial water and wastewater treatment facilities.

SmartSonic^TM, Princo’s unique SMART ultrasonic transmitter, with innovative narrow beam technology, and optional HART^® protocol, is unquestionably the best ultrasonic transmitter on the market today.  Pre-programmed with characterization for weirs, flumes and nozzles of every type, it functions as a self-contained Open Channel Flowmeter.  Available in ranges up to 84 feet and with a variety sensor materials (PP, PVDF, TFE or SS), the SmartSonic^TM is a versatile non-contact level transmitter satisfying many diverse applications.

Princo's line of RF Null-Kote^TM (coating immune), Multi-Point level controls are the ideal solution for all your Sump and Lift Station level control requirements.  With their unique "easy-on" probe connection, they are simple and easy to install.

For more than three decades, Princo "Run-Dry" pump protectors, the industry standard, have been furnished on sludge pumps whenever wastewater facilities are built or expanded.  Due to the trouble free nature of Princo products, plant personnel are often unaware that a Princo pump protector is operating flawlessly in their facility.

SmartPress^TM, Princo’s recently introduced pressure level transmitter, with its large offset capability, it is well suited for application on Water Towers.

Products manufactured and supplied include: