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The Diehl Metering ALTAIR V5 DN20 is a compact volumetric water meter designed for residential, commercial and smart water metering applications.
The meter offers high metrological accuracy, long-term reliability and excellent performance even at very low flow rates, making it ideal for modern water utility and smart city installations.
The ALTAIR V5 features a modular communication concept, allowing the meter to be equipped with IZAR radio LoRaWAN® module, transforming the meter into a smart water meter for remote reading and leak detection.
This version features a brass body with a glass register for enhanced mechanical strength, durability and long-term reliability in demanding installations.
Its robust design, high dynamic range and resistance to chlorine and blockages ensure long service life and stable measurement performance even in difficult water conditions.
This solution is ideal for water utilities, apartment buildings, commercial buildings, smart city projects and IoT water monitoring systems.
📡 Smart Metering & LoRaWAN Connectivity
When equipped with the IZAR radio module, the ALTAIR V5 enables:
- LoRaWAN remote meter reading
- Automatic meter reading (AMR / AMI)
- Leak detection and alarms
- Tamper detection
- Temperature alarms
- Consumption data logging
- Hourly / daily / monthly consumption history
- Smart water network monitoring
- Data transmission from once per day up to every 15 minutes
- Integration with smart city and IoT platforms
The modular radio system allows the meter to be upgraded to smart metering at any time.
⚙️ Water Meter Features
The ALTAIR V5 volumetric water meter offers:
- Volumetric measurement technology
- High accuracy and long-term measurement stability
- MID approved up to R1000
- Very low starting flow rate
- High dynamic range measurement
- Brass body
- Installation in any position
- Compact and robust design
- Resistant to chlorine and blockages
- Large filtration surface for long lifetime
- Modular design for radio communication modules
- Suitable for smart water metering applications
🚰 Typical Applications
- Residential water metering
- Apartment buildings
- Commercial buildings
- Water utilities
- Smart water metering projects
- Smart city IoT projects
- Water consumption monitoring
- Leak detection systems
- Building management systems
📦 Package Includes
- Diehl ALTAIR V5 DN20 water meter
- IZAR radio module
- Installation documentation
- MID certification
📥 Product Downloads
📄 Datasheet Altair V5 DN20
📖 Installation Altair V5 DN20
📄 Datasheet LoRaWAN Module
📖 Installation Guide LoRaWAN Module
Technical Specifications
| Meter Type | Volumetric water meter |
| Model | Diehl ALTAIR V5 |
| Nominal Diameter | DN20 |
| Measurement Technology | Volumetric |
| Communication | LoRaWAN via IZAR radio module |
| Frequency | EU868 |
| Approval | MID up to R1000 |
| Installation | Any installation position |
| Body Material | Brass |
| Starting Flow Rate | Very low starting flow |
| Dynamic Range | High dynamic measurement range |
| Application | Cold water |
| Smart Metering | Yes (with IZAR module) |
| Leak Detection | Yes (with radio module) |
| Data Logging | Yes |
| Pressure Rating | PN16 |