Less waste. More efficiency. Water metering that works for you.
Because every drop counts: Make your water usage management more efficient and cost-effective with our state-of-the-art water meters.
The benefits of smart water metering.
Integrated wireless interface for remote reads
Automatic data transmission on fixed dates
Modular system for a versatile range of applications
Accurate flow rate measurement
Both cold and hot-water meters available
Choose smart, reliable water metering with ista.
Discover how our advanced metering technology helps you conserve resources and ensure precise, consumption-based billing. At ista, we provide a complete range of hot and cold water flow meters for every need and all types of properties – from apartments and houses to large-scale commercial installations.
Our modular water meter system offers three flexible options: contact, radio, or M-Bus. Even the smallest leaks, such as a dripping tap, are detected and included in the billing process, giving you complete transparency and control.
domaqua® m – the modular all-rounder for residential water metering.
We have further enhanced our domaqua® m domestic water meter, making it an all-rounder for a wide range of residential applications. This modular surface water meter supports multiple technologies – radio, M-Bus, or contact – all within a single device.
The domaqua® m is a single-jet impeller meter featuring a magnetic coupling and roller counter, ensuring reliable transmission of the impeller’s rotation to the counter. By default, it comes with a pre-installed blank module, which can be easily removed at any time – providing the foundation for seamless modular upgrades.
Designed for precise measurement, this surface water meter is ideal for recording smaller consumption volumes, such as in apartment units. With various installation lengths, it allows for easy replacement of existing meters.
As a dry-run meter, the domaqua® m delivers high measurement accuracy, capturing even minimal flow rates while ensuring a long service life. Its robust design prevents foreign particles or deposits from entering the roller counter, and the housing effectively shields against splashing water.
For remote data collection, a contact module transforms the domaqua® m into a remote-readable version, that can be connected to automated reading systems, such as central control or building management systems. The plug-in modules have a lifespan of ten years – even if the meter itself has to be replaced due to mandatory calibration periods.
Flow rate options: Q₃ 2.5 m³/h and Q₃ 4 m³/h
Installation lengths: 80, 110, and 130 mm
Flow rate options: Q₃ 2.5 m³/h and Q₃ 4 m³/h
Presisjon møter effektivitet – oppgrader vannforvaltningen din med ista.
Få full kontroll på vannforbruket med våre tjenester for måling, fakturering og analyse – og reduser kostnadene.
How smart water metering works.
Precise metering technology allows for accurate recording and consumption-based billing of water usage. ista’s smart water meters feature a built-in wireless interface, enabling remote reading and automatic data transmission at pre-set intervals. This ensures accurate, timely, and hassle-free monitoring of water consumption.
The compact, modular design allows for flexible installation and integration with various communication protocols, including contact, radio, and M-Bus, which enables regular monitoring of an entire building’s water consumption, providing seamless and efficient data management. Additionally, ultrasonic measurement options provide enhanced precision. The system can be tailored to specific on-site requirements, ensuring maximum efficiency.
Each meter is designed for dry operation, preventing water exposure to mechanical parts. This helps eliminate deposit buildup, ensuring long-term measurement accuracy.
In addition, remotely readable water meters offer maximum convenience for consumption-based water and heating billing. Since the devices automatically record and process consumption data electronically, there is no need for on-site meter readings inside apartments.
Discover our full range of water meters.
ista offers water meters for every need – from compact models for residential use to high-capacity meters for large apartment complexes and commercial properties. Reliable, precise, and built for seamless integration.
istameter® m
The istameter® m water meter is the advanced evolution of the widely trusted original istameter®. As a modular water meter, it provides a single solution for practically all technologies and applications, making it the benchmark for a sophisticated, fully integrated metering system.
As a full dry-run meter, the istameter® m ensures enhanced operational reliability and measurement accuracy. The counter mechanism does not come into contact with flowing water, preventing deposits from accumulating in the register. The istameter® m is mounted on installation components. This means that even when the meter needs to be replaced, for example after the calibration period, all other installation components remain in place. It can be installed horizontally or vertically, with the register adjustable to the desired position. Retrofitting to existing supply lines, for example when renovating older buildings, is easy thanks to the valve connection.
As standard, the istameter® m is delivered with a pre-installed blank module. The design ensures that this blank module can be quickly and easily removed at any time, providing the basis for a modular water meter. By adding the contact module, the istameter® m becomes a remote reading version for even greater efficiency.
Application Areas
The complete istameter® m system with meters, built-in components and accessories offers a wide range of possible uses in the home, e.g. on the shut-off valve, on the bath or shower tap, under wash basins or kitchen sinks or in existing in-wall meter cabinets.
Key Advantages
• Future-proof technology with a modular design
• Comprehensive metering system for hot and cold water in residential settings
• Easy replacement thanks to the separation of the meter and installation components
• Wide range of applications due to high model variety
• High measurement accuracy and reliability
• Available with nominal flow rates of Qn 1.5 m³/h and Qn 2.5 m³/h
• Available with permanent flow rates of Q₃ 2.5 m³/h and Q₃ 4 m³/h
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Presis måling av vann – bygget for fremtiden.
Nøyaktig måling av varmt og kaldt vann er avgjørende for både kostnadskontroll og bærekraftig ressursbruk. ista sine ultralydmålere leverer høy presisjon og pålitelig ytelse, enten de brukes som rene flowmålere eller som en del av varme- og kjølemåling.
Det som virkelig skiller våre målere, er den gjennomtenkte konstruksjonen. Sensorene er plassert inne i målerøret og er ikke påvirket av trykkendringer. Resultatet er stabil og nøyaktig måling – også etter mange års drift.
Med ingen bevegelige deler reduseres slitasje til et minimum, noe som gir lang levetid og lavere vedlikeholdskostnader. Kombinert med lavt trykktap og et bredt dynamisk måleområde, gir dette en løsning som er både teknisk og økonomisk optimal.
Alle målere kan enkelt integreres med fjernavlesning via ista sitt radiosystem eller standardiserte løsninger som M-Bus og wireless M-Bus.
Ultralydteknologien gir en robust, fremtidsrettet løsning – og er en investering i både nøyaktighet og driftssikkerhet.
Frequently asked questions
A water meter (also commonly referred to as a “water clock”) measures the volume of water flowing through the pipes of a house or apartment building.
There are two main categories of meters:
- cold water meters, used for temperatures up to 30°C
- hot water meters, used for temperatures between 30°C and 90°C
Both models ensure accurate measurement of consumption, which is essential for the fair allocation of water costs.
Hot water meters are used in residential units when hot water is centrally heated in a boiler located in the basement. This ensures that hot water costs can be fairly allocated based on consumption in the heating cost statement.
With a rental or warranty maintenance contract, water meters are read by one of our ista Service Partners. If remote-readable water meters are installed, individual apartments no longer need to be accessed. All consumption data is automatically recorded and electronically processed, eliminating the need for meter reading appointments with residents.
Depending on the building and layout, the water meter is located in different places within the apartment or centrally in the basement on the main supply line. In rental apartments, the water meter is usually located in the kitchen and/or bathroom. If it is not visibly placed under the sink, it is often hidden behind a panel at the riser pipe. In a detached house, the water meter is typically installed next to the main shut-off valve in the basement or utility room. If a water meter has not yet been installed in your apartment, it can also be retrofitted onto the apartment shut-off valve.
All meters must comply with the European Measuring Instruments Directive (MID). This directive specifies that water meters must measure with an accuracy of +/-5% in the low flow range. In addition, cold water meters must measure with an accuracy of +/-2% and hot water meters must measure with an accuracy of +/-3% in the continuous load range. These values correspond to the German calibration error limits. The national legal limits for permissible measurement errors remain unchanged in Germany and are set at twice the calibration error limits.
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Tall og fakta
6,300 ansatte
20 land
3,7 mill tonn CO₂-utslipp unngått
43 mill fjernavleste målere
