ONICON Incorporated has been delivering market leading flow and energy measurement products since 1987. For more than 35 years we have been exclusively focused on delivering quality engineered flow and energy measurement instruments for hydronic heating and cooling systems. Our broad range of product solutions are wet calibrated, fully programmed for your application, and ready to use right out of the box. This attention to detail simplifies installation and maximizes performance. Our flow meter technologies include: electromagnetic, turbine, ultrasonic, thermal, and vortex. We also offer BTU (energy) meters that integrate flow inputs from the technology of your choice.