OPTISONIC 3400 approved as heat meter according to MI-004

The OPTISONIC 3400 ultrasonic flowmeter is now available with approval as a heat meter according to MID 2014/32/EU Annex VI MI-004 (and the harmonized standards CEN EN1434, OIML R75) in accuracy classes 1, 2 and 3. Target applications include district heating networks, commercial and industrial heat metering applications, and energy metering and supply applications in cogeneration plants.

The OPTISONIC 3400 is the only inline heat meter that offers highly accurate measurement of heating water with three ultrasonic paths over the entire DN25...2000 / 1...80" nominal diameter range. To guarantee the specified accuracy classes, each heat meter is subjected to a 3-point calibration with water at the factory.

Thanks to the direct path configuration, the OPTISONIC 3400 is insensitive to (magnetite) deposits, unlike meters that use reflectors. It offers bi-directional flow measurement and has a fully welded construction with no potential leak points. The OPTISONIC 3400 also features advanced diagnostic and status displays (in accordance with NAMUR NE 107) and sonic velocity measurement to provide additional information about the medium and the process.