The GF U3000 V2 is the GF reference solution for permanent ultrasonic Clamp-On flowmetering. Providing various options for high accuracy measurement, power, communication, pipe dimension, data storage & export it can be customized to almost any application need. The GF U3000 V2 Heatmeter (HM) is an ultrasonic permanent clamp-on heatmeter / energy meter / BTU meter. Additionally to an ultrasonic flowmeter it is equipped with Pt100 temperature sensors to calculate the energy of a heat exchanging system.