Ultrasonic energy meter for demanding applications
SonoMeter™ 40 is a compact ultrasonic meter for measuring the flow and thermal energy in heating and/or cooling applications within district energy networks, commercial and residential buildings.
The meter is MID class II B+D approved. It can be ordered for supply or return pipe installation and provides many different configuration options.
Features and benefits
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Multiple communication options available (up to 3 communication interfaces can be used in parallel)
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Exchangeable temperature sensors, batteries, and communication module
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Mains power with battery back-up secures no data loss even if power is lost
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Battery lifetime (up to 15 years) or 24V/230V mains powered - lowers replacement frequency
Technical data
- Size | Flow: DN15 – DN100 | Qp 0.6-60 m3/h
- Temperature | Pressure: 0.1 – 130°C | PN25
- Types:Compact meter (heat, combined heat & cool)
- Approvals: MID class II B+D (heating), national cooling approvals
- Flow sensor cable length:1.2m | 2.5m | 5.0m | 10.0m
- Temp. sensor cable length: 1.5m | 3.0m | 5.0m | 10.0m
- Configuration options:
- Tariffs
- Display parameters
- Archive logs
- M-Bus settings
- OMS settings
- Set dates
- Pulse input/output values
- Data logging: min. 3 years (supports monthly, daily, and hourly records)
- Flow sensor: IP class 68
- Calculator: Separable and IP class 65
- Modular: 1 slot for communication modules+
- Communication integrated:
- Wired M-Bus
- Wireless M-Bus (OMS)
- Pulse in-/output
- Optical interface
- Communication modules:
- Wired M-Bus
- RS 485 Modbus RTU
- RS 485 BACnet MS/TP
- LoRa WAN
- Power:
- Battery 1 x AA-cell 3.6 VDC
- Mains unit: 230 V AC | 24 VAC
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Installation guide | 24 V power supply module and 230 V transformer | English | Multiple | 05 Apr, 2024 | 689.0 KB | |
| Operating guide | BACnet MS/TP Module for energy meter SonoMeter 40 | English | Multiple | 05 Apr, 2024 | 432.1 KB | |
| EU-UK Declaration | Danfoss EU-UK 014R2944.01 | German; English; Latvian; Polish | Multiple | 31 Oct, 2025 | 974.3 KB | |
| Brochure | Energy metering solutions - Product overview 2024 | English | Multiple | 16 Jan, 2025 | 1.6 MB | |
| Export Control Declaration | Energy meters | English | Multiple | 04 Nov, 2025 | 207.3 KB | |
| Metrological Certificate | LEI LT-1621-MI004-47 | English; Lithuanian | Multiple | 31 Oct, 2025 | 801.0 KB | |
| Operating guide | Modbus RTU Slave Module for energy meter SonoMeter 40 | English | Multiple | 05 Apr, 2024 | 446.9 KB | |
| Metrological Certificate | PTB DE-21-M-PTB-0069 | German; English | Multiple | 31 Oct, 2025 | 2.6 MB | |
| Data sheet | SonoMeter 40 | English | Multiple | 29 Mar, 2024 | 2.0 MB | |
| Installation guide | SonoMeter 40 | English | Multiple | 15 May, 2022 | 2.7 MB | |
| User guide | SonoMeter 40 - Test and calibration instruction | English | Multiple | 13 Sep, 2021 | 1.5 MB | |
| Operating guide | SonoMeter 40 - Wired M-Bus protocol description | English | Multiple | 19 Oct, 2021 | 1.1 MB | |
| User guide | SonoMeter 40 configuration software | English | Multiple | 21 Feb, 2022 | 1.2 MB | |
| Operating guide | SonoMeter 40, SonoMeter 40c Wireless M-Bus protocol description | English | Multiple | 28 Mar, 2022 | 329.3 KB |