Heat/hot water meter, screw-type, model MWN-130 NUBIS IP65, DN80 (3"), Q3=100.0 m³/h, R40, Tmax: 130°C, L=225mm, flange connection, dry-type 60-7722201-000

Flow Measurement in Large District Heating Systems

The MWN-130 NUBIS screw-type water meter is a device designed for precise measurement of hot water consumption in systems with high flow rates. Thanks to the use of a turbine as the measuring element, this model effectively handles high flows, achieving a continuous flow rate (Q3) of 100 m³/h. This solution is dedicated to transmission networks, industrial facilities, and public utility buildings where collective monitoring of utility consumption is required.

The device features high thermal resistance, allowing operation with water temperatures up to 130°C. The housing, made of cast iron and protected with a paint coating, ensures durability in harsh environmental conditions. The IP65 protection rating shields the counting mechanism from dust and water jets, which is crucial when installing in locations exposed to moisture or direct external factors.

Mounting Flexibility and System Compatibility

The water meter's construction allows installation in both horizontal and vertical pipelines, significantly facilitating integration with existing installation infrastructure. The flanged connection with a nominal diameter of DN 80 (3 inches) and a working length of 225 mm enable quick and leak-proof connection to the network without the need for additional adapters. The register can be oriented upwards or sideways, adapting to the specifics of the hydraulic system.

The device is prepared for operation in modern remote data reading systems (AMR). Standardly equipped with a six-drum register, it can be expanded with transmitters:

• reed switch or optoelectronic for local reading;
• communication overlays (radio, M-Bus, pulse, GSM).

This flexibility allows easy modernization of the billing system without replacing the entire measuring device. It is worth noting that this model complies with standards regarding resistance to external magnetic fields (in accordance with EN 14154-3 and EN-ISO 4064-2), guaranteeing reliable readings even in industrial environments exposed to electromagnetic interference.

Application Scope and Technical Characteristics

The device operates over a wide flow range thanks to a rangeability factor (R) of 40, meaning it can precisely record both peak water consumption and lower flows – important for billing costs in large-area facilities. The standard version with an IP65 register ensures long-term operation without the need for frequent service inspections.

Key construction features of this model include a nominal diameter of DN 80 with a flanged connection and a mounting length of 225 mm. The housing is made of painted cast iron, providing mechanical and corrosion resistance. The device handles media at temperatures up to 130°C with a continuous flow of 100 m³/h. Thanks to the IP65 protection rating and the possibility of horizontal and vertical mounting, this water meter serves not only as a component of permanent installations but also as a reliable tool for energy audits and utility balancing in large municipal or industrial facilities.