Heat/hot water meter JS, screw-type, model MWN-130 NUBIS IP65, DN100 (4"), Q3=160.0 m³/h, R40, Tmax: 130 °C, L=250mm, flange connection, dry-run 60-7723201-000

Measurement of High Flow Rates in Hot Water Installations

This device is a screw-type water meter, model MWN-130 NUBIS, specifically designed for recording hot water consumption in high-flow systems. By utilizing a turbine as the measuring element, this model effectively handles flow rates up to 160 m³/h (Q3), making it a suitable solution for transmission networks, multi-family buildings, and industrial facilities. The housing, made of cast iron and coated with a protective paint layer, ensures resistance to corrosion and mechanical damage, which is crucial for operation in challenging environmental conditions.

Application and Operating Conditions

The water meter is designed for use with water at temperatures up to 130°C, allowing direct installation in domestic hot water circuits or heating systems. The maximum operating pressure is 16 bar (PN16), meeting the requirements of most standard industrial and municipal installations. The device features versatile mounting options – it can be installed in both horizontal pipelines (with the register facing upward or sideways) and vertical pipelines (with the register facing sideways).

Thanks to the IP65 protection rating, the register is sealed against dust and water jets, enabling safe operation even in locations exposed to moisture or direct water contact (e.g., during pipeline cleaning). The measurement range coefficient R40 indicates that the device accurately measures both high and medium flow rates, ensuring reliable billing data. The DN 100 flanged connection and a working length of 250 mm facilitate integration with existing industrial pipelines.

Functionality and Integration with Remote Reading Systems

A key advantage of this model is its communication interface prepared for integration with AMR (Automated Meter Reading) systems. Standardly equipped with a six-drum register, the water meter can be easily expanded with data transmitters:

• Reed or optoelectronic transmitters – enable remote reading of indications without the need for physical access to the device.
• Communication overlays – the device is compatible with radio modules, M-Bus, pulse, and GSM modules, facilitating the development of smart water networks.

It is also worth noting the construction's resistance to external magnetic fields, in accordance with standards EN 14154-3 and EN-ISO 4064-2. This means that measurements will not be disturbed by accidental magnetic fields present in industrial or urban environments. The dry-register construction further protects the counting mechanism from moisture originating inside the pipeline.

This device constitutes a reliable component in measurement systems where high reliability is required under high temperatures and large flow rates. Its design allows for easy installation and subsequent system upgrades without the need to replace the entire housing.