After having been reluctant of using clamp-on ultrasonic flow meters for energy measurement in cogeneration plants in large residential and commercial buildings, a U.S.-based engineering firm was convinced by the clamp-on meter’s strengths. A test of a SITRANS FUE1010 energy meter in an actual field application revealed such strong and reliable performance that it was enough to convince the engineering team to start using the clamp-on ultrasonic flow technology.