Nubis is propeller, dry water meter Wolman’s type, with horizontal impeller axle, parallel to pipe axles. Nubis water meters are characterized by modren construction and technology solutions, which make them long-lasting and perfectly proved in cooperation with pulse transmitters and remote system for measuring data readings.
APPLICATION
Water meters are assigned to industrial measurement of water usage up to 30 degrees of cold water and up 130 degrees of hot water meters gives possibility of mounting on horizontal, vertical and inclined water supply system with counter set upwards, sidewards or in medium posittion H-V. Optionally, there is available version of water meter for demineralised water for DN40-150 (cold and hot water) and with the input for pressure sensor (M14x1.5) for DN50-150.
ADVANTAGES
- Permanent and efficient construction, ensuring the flow of water in low loss of pressure and easines in assembly in random waterworks installation.
- Lowered weight of water meter
- Interchangeable and unified matering layer fitting to several sizes of body and assuring optimal water meter management
- Standard water meter is suitable for remote readings in AMR system
- The possibility of mounting the water meter in the intermediate position without the influence on the metrological parameters, larger posibilities in designing and modernizing new used water mwtwers connections
- Very good anticorrosive and mechanical qualities of paint coat (powder paint – epoxy)
CHARACTERISTIC FEATURES
- Resistant to the external magnetic field, according to EN14154-3
- low starting slow rate
- Wide measuring range
- Ease read-out due to a freely adjustable rotary counter dial placed in the casing
- Possibility of electronic check-up of the metrological parameters of the water meter
- Modular srructure
- Removable measuring insert in covered casing
- Magnetic clutch
propeller water meters construction can be divided to : body, measurement mechanism and counting mechanism. The water flow activates the impeller mounted in a measuring mechnism. The rotor is positioned coaxially or perpendicular (vertical) to the duct system of the body and through the srew-worm wheel drives the magnet located in the axis Through the magnetic coupling the water volume is shown on the counting mechanism.
For measuring of consumption of greater amounts of cold water with a temperature up to 30 °C or 50°C, or hot water with a temperature up to 130°C, on the maximum working pressure up to 16 bar (PN16). Suitabe for installation in the horizintal hoses (pipelines) with the counter directed upwards (H), in vertical or horizontal hoses with the counter directed sidewards (V) or in diagonal hoses (H/V). MWN water meters in standard version are equipped with six-barrel counter (IP65, IP68 – optional) and painted cast-iron housing. Water meters are adapted to operation in the systems of remote data transfer (AMR).
Metrological Class
Type MWN
- Cold water R100+200 – H, V
- Warm water R25+40 – H, V
- Cold water R100 – H, V
- Warm water R40 – H, V
Features :
- Preequipped for installation of : radio module for communication in the Wireless M-bus and Impulse module (not applicable)
- Wide measuring range
- Low starting rate
- Removable measuring panel
- Double-sided rotor bearing
- Easy reading of the water meter counter
- Hermetic counter – IP68 on request
- Counter mechanism with blockade against multiple rotating, at rotation angle more than 360°
- Reading reliability
- In special option housing with connection for pressure measurement DN40-125 (cold and hot water)
- On request possibility of another drilling
Technical Characteristics
| Nominal diameter (DN) | 100 mm |
| Temperature class (working temperatures range)T130 (0,1+130°C) | MWN (without transmitter) or MWN (with transmitter) in NK, NKO, NKOP, No option) |
| Constant Flowrate Q3 | 160 m3/h |
| Overload Flowrate Q4 | 200 m3/h |
| Transitional Flowrate Q2 | 1.28 m3/h |
| Minimal Flowrate Q1 | 0.8 m3/h |
| Starting Flowrate | 0.25 m3/h |
| R measuring rate Q3/Q1 | 200 |