Products
Power meters, data loggers and energy management software
The meter measures. The data logger collects the readings and passes them on. The software analyses them and handles billing. Each product also works on its own.
Meters, data loggers and software at a glance
Power meter
EMU Professional II
Three-phase power meter with integrated load profile memory. Assigns consumption unambiguously to machines, tenants or parts of a building.
- MID-compliant for billing
- Up to 3 years of load profile in the device
- M-Bus, Modbus, TCP/IP or LoRa
Technology, certificates and documents
Data logger & gateway
EMU M-Center
The link between your meters and your systems: reads EMU and third-party meters and serves several target systems at the same time.
- Up to 250 M-Bus devices
- MQTT, BACnet IP, OPC UA, Modbus TCP
- Operated in a web browser
Functions, licences and technical data
Software
Joulio-Web
Web-based energy management: monitor consumption, spot load peaks and bill utility costs straight from the meter data.
- ISO 50001 certified
- Reports and alarms by email
- Cloud solution in a professional data centre
Functions and licences
Accessories
Current transformers
Above 100 A, the Professional II no longer measures directly but via current transformers: solid-core types with 5 A or split-core types with 1 A secondary current.
- 60 to 1250 A primary
- Class 1 and 0.5
- Split-core for retrofitting
Selection and sizing
Guide
Which EMU product suits which task?
| Record consumption per tenant or machine | EMU Professional II |
|---|---|
| Analyse load peaks and demand charges | Professional II, analysed in Joulio-Web |
| Collect existing third-party meters | EMU M-Center |
| Hand data over to the building management system | M-Center over BACnet IP, OPC UA or Modbus TCP |
| Get data into the cloud or a dashboard | M-Center over MQTT or API |
| Bill utility costs | Joulio-Web |
| Demonstrate ISO 50001 | Joulio-Web |
Not sure what fits together? Send us the meter list with manufacturer, protocol and quantity, together with your target system.
Frequently asked questions
Frequently asked questions about EMU products
Which EMU power meter is approved for billing?
The EMU Professional II. It is approved to MID modules B+D and meets PTB-A 20.1 and PTB-A 50.7. The three-phase meter measures directly up to 100 A or via current transformers and stores up to three years of load profile in the device – even without a control system.
How does the meter data get into my system?
Depending on the version, the Professional II outputs its values over M-Bus, Modbus RTU, TCP/IP with MQTT or LoRaWAN, and over KNX from Q1 2027. Where there are many meters or third-party devices, the EMU M-Center collects up to 250 M-Bus devices and passes the data on via MQTT, BACnet IP, OPC UA, Modbus TCP, (s)FTP or email.
Do I need Joulio-Web?
Only if you want to analyse consumption, investigate load peaks or produce utility cost statements. Joulio-Web is ISO 50001 certified and runs as a cloud solution in a professional data centre. The meters and the M-Center also work without Joulio-Web, with any other target system.
Above what current do I need current transformers?
The Professional II measures directly up to 100 A per phase. Above that, the transformer-connected version is used: with solid-core current transformers (5 A secondary, 60 to 1250 A primary) in new installations, or with split-core current transformers (1 A secondary, 100 to 1000 A primary) for retrofitting without disconnecting.
Which combination of meter, data logger and software fits?
We will tell you which devices, interfaces and licences you actually need – and which you do not.
Phone
+41 (0)41 545 03 00
General
info@emuag.ch
Orders Switzerland
orders@emuag.ch