Reliable heat readings and full system insight without replacing existing meters

ACRIOS converters digitalise heat meter readings. Reliably, efficiently, and without the need to replace existing technology.

District heating operators face increasing pressure for more accurate billing, more frequent readings, and better performance management of their networks. Manual readings are both time-consuming and costly. With ACRIOS converters, you can keep your existing meters, connect them to the network, and receive remote readings at intervals as short as 15 minutes, without meter replacement and without complex installation. As the result you get faster billing, improved consumption control, and data to optimise heat delivery.

Find out more

Challenges for heating utilities

Transition to two-component billing requires frequent and accurate readings

Overpayments caused by consumption estimates and delayed billing

Lack of interval data for network performance management

High costs of on-site visits and manual readings

Meters without connectivity, often with no power supply at installation sites

Our solution

ACRIOS converters digitalise readings from existing meters.

We connect any device with M-Bus or wM-Bus communication. The converters collect data and transmit it via NB-IoT or LoRaWAN directly to the utility’s central system.

Reading intervals can be as short as 15 minutes, providing continuous data suitable for two-component billing and system performance control.

Wireless converters run on batteries lasting up to 10 years and require no external power, ideal for heat exchange stations or meters located in shafts.

Deployment is quick and simple, with no meter replacement, no interference with existing technology, and no vendor lock-in.

All converters

Wireless M‑Bus (wM‑Bus) to NB‑IoT

Wired M‑Bus to NB‑IoT

Wired M‑Bus to LoRaWAN

Remote heat readings without meter replacement. Interval data for accurate billing and smarter network control

What you gain

Continuous consumption insight

More accurate billing and fewer overpayments thanks to continuous data

Remote reading

Automatic readings every 15 minutes, no on-site visits required

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Data-driven heat optimisation

Instant overview of consumption and data for heat delivery optimisation

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Keep existing meters

Retrofit of existing meters, no replacement, no vendor lock-in

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Security by design

Secure transmission and OTA updates, CRA/RED ready

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Cost-efficient operations

Fast ROI through time and operational cost savings

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Technologies such as LoRaWAN or NB-IoT can be complex to implement. That’s why we offer consultations. We help assess the suitability of each approach, define technical requirements, and clarify what to expect from your suppliers. With hands-on experience, we know what truly works in practice.

Smart solution for district heating

ACR-CV M-Bus

Wired M-Bus, battery-powered (no external power supply)
Data transmission via NB-IoT / LoRaWAN
Supports 1:1 connection as well as multiple meters per unit
Fast installation, suitable for both small and large deployments

ACR-CV wM-Bus

wM-Bus (OMS and proprietary), including Sensus BUP / Sontex Radian
Wall or manhole installation, IP67, battery life >10 years
Reading range approx. 40 m, limited by radio coverage
Data transmission via NB-IoT, no electrical inspection required

How to get started

Testing phase

Within one week – we’ll deliver a pre-configured unit with a SIM card and setup ready for use. The goal is to quickly verify functionality without requiring integration on your side.

Integration

If the test succeeds, we proceed with the integration process, addressing your connectivity setup, system integration, and specific configuration, which will be applied to delivered devices.

Scaling

Devices are typically delivered with your configuration and SIM cards, ready for quick installation.

Trusted by

“Together with Co.Met, we equipped all district heating exchange stations in Saarbrücken with ACRIOS converters for wired M-Bus, enabling remote readings of heat meters at 15-minute intervals. It was a pure retrofit of existing M-Bus meters — no replacement and no intervention in the station’s technology, so deployment was fast and operationally seamless. The utility now benefits from interval data for more accurate billing and continuous consumption monitoring, while costly manual readings have been eliminated.”

Co.Met

Digitalise your heat meter readings with ACRIOS

Reduce operating costs, speed up billing, and gain full insight into your consumption and network performance. With ACRIOS retrofit converters, you can connect existing M-Bus meters to the network and obtain reliable readings, with no meter replacement, no complex installation, and no vendor lock-in.

Request a free consultation

Frequently asked question

Does your solution work with our existing meters?

Yes. ACRIOS converters can connect to any M-Bus meters (e.g. heat meters). Meter replacement is not required.

How often are readings taken?

Typically every 15 minutes (depending on configuration). The converter reads the value and immediately sends it to your system via NB-IoT or LoRaWAN.

Is data stored locally in the unit?

No. The converter reads and transmits data. If the connection is temporarily unavailable, the next reading occurs as soon as communication is restored.

Do we need to replace our meters?

No – this is a retrofit solution. You can keep your existing M-Bus meters.

Is an electrical connection required?

No. The units are battery-powered with long battery life (depending on reading interval).

Which transmission technologies do you use?

NB-IoT or LoRaWAN, depending on local conditions and preferences.

How does integration into our system work?

We supply hardware with full documentation and technical support. Data flows directly from the converter to your system – not through our servers or cloud.

How many units do we need?

It depends on topology: for exchange stations, typically one converter per station; for apartment buildings, the wM-Bus variant is used – usually one unit per 4–5 floors.

How long does installation take?

Usually just a few minutes per station or meter. We deliver pre-configured units.

Do you provide SIM cards and connectivity?

Yes, we can supply active connectivity, or you can use your own SIM cards.

Can we start with a pilot?

Yes. We offer pilot installations with pre-configured units.

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Lukáš Smetana

CSO

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