Danfoss Sono® compact energy meters offer both primary side and secondary side meters for heating as well as cooling applications. They can be used in single family houses, apartment buildings and commercial buildings. All meters are high quality, for the highest accuracy and longest life time values.

Secondary side meters
They are typically installed after the heat-exchanger and by that, are owned by the house, apartment or building owner. These meters cover sizes from DN15 to DN32 with flow rates from 0.6 up to 6.0 m3/h. The nominal pressure is PN16. The robust construction, open communication protocols, long battery life time and genuine diagnostics (also via App) provide many advantages over other meters available in this segment.

Primary side meters
They are typically installed before the heat-exchanger and by that, are owned by district energy utilities. The conditions require meters with a robust construction and fulfilling high demand requirements on e.g. temperature and pressure. These meters cover sizes from DN15 up to DN100 with flow rates from 0.6 up to 60 m3/h and are available in pressure range PN16 and PN25.
Features and benefits
Full product portfolio
Ultrasonic, high accuracy, meters for heating and cooling
Open communication protocols increase flexibility
Advanced self diagnostics
Product range
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }SonoSafe™ 10The ultrasonic meter SonoSafe™ is a compact and reliable meter offering basic features and functions. It can be installed in several heating applications within residential buildings and comes with all national certification requirements.
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }SonoMeter 30The Danfoss SonoMeter 31 offers a range of ultrasonic, compact energy meters intended for measuring energy consumption in heating and cooling applications for billing purposes. Available in DN65 to DN100 . The meters are designed for remote meter read-out (AMR).
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }SonoSelectSonoSelect™ 10 is a high-end ultrasonic meter for heating and cooling consumption. The compact meter is primarily used in residential buildings and also allows measuring of tap water. By using Danfoss SonoApp™, a new level of installation and commissioning simplicity is achieved.
Documents
Type | Name | Language | Valid for | Updated | Download | File type |
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Brochure | Energy metering diagnostics | English | Multiple | 12 Apr, 2019 | 1.7 MB | |
Brochure | Energy metering solutions - Product overview | English | Multiple | 10 Mar, 2020 | 2.5 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Czech | Czech Republic | 27 May, 2016 | 1.2 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Bulgarian | Bulgaria | 27 May, 2016 | 1.2 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Croatian | Croatia | 27 May, 2016 | 1.1 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Slovenian | Slovenia | 27 May, 2016 | 1.1 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Turkish | Turkey | 27 May, 2016 | 1.1 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Chinese (CN) | China | 27 May, 2016 | 1.3 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | German | Multiple | 27 May, 2016 | 1.2 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Serbian (RS) | Serbia | 27 May, 2016 | 1.1 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Slovak | Slovakia | 30 Jun, 2016 | 991.5 KB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Russian | Russia | 27 May, 2016 | 2.1 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Hungarian | Hungary | 27 May, 2016 | 1.1 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Lithuanian | Lithuania | 21 Nov, 2016 | 1.0 MB | |
Brochure | Knowledge and innovation to win at every project stage SonoSelect™ heat meter - 12 pager | Romanian, Moldavian, Moldovan | Romania | 27 May, 2016 | 1.1 MB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | English | Multiple | 12 Apr, 2019 | 560.5 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Serbian (RS) | Serbia | 24 May, 2016 | 383.5 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Chinese (CN) | China | 24 May, 2016 | 534.1 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Bulgarian | Bulgaria | 24 May, 2016 | 313.9 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Hungarian | Hungary | 24 May, 2016 | 337.6 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Czech | Czech Republic | 24 May, 2016 | 383.9 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | German | Multiple | 24 May, 2016 | 357.7 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Slovenian | Slovenia | 24 May, 2016 | 375.1 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Russian | Russia | 24 May, 2016 | 2.9 MB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Slovak | Slovakia | 30 Jun, 2016 | 273.9 KB | |
Brochure | Precision and reliability through advanced ultrasonic technology 4-pager | Croatian | Croatia | 24 May, 2016 | 377.2 KB | |
Brochure | SonoSelect™ - Knowledge and innovation to win at every project stage | English | Multiple | 12 Apr, 2019 | 1.6 MB |
Tools and apps

Related products
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }Infocal 9The Infocal 9 is an energy calculator, e.g. for combination with Sono3500 CT or SonoSensor 30. It is especially designed for heating, cooling or combined heating/cooling applications in local and district energy systems.
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }SonoSensor™ 30SonoSensor™ 30 is an ultrasonic flow sensor designed for heating, cooling or combined heating/cooling applications in medium sized local and district energy systems.
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }Flow sensor Sono3500CTThe Sono3500CT is an ultrasonic flow meter especially designed for heating, cooling or combined heating/cooling application in local and district energy systems.
Case studies
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if (isSmallPicture) {
; } else if (isBigColumns) { } else { }Substations in student flats, Bamberg, GermanyLow heating bills for students with a modern flat station solution.
“This is more energy efficient than a traditional boiler, which would be the alternative, since there is no need for a hot water cylinder. That saves a lot of energy."