Nubis is popeller, dry water meter Wolman’s type, with horizontal impeller axle, parallel to pipe axles. Nubis water meters ara chracterized 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 meter are assigned to industrial measurements of water usage up to 30 degrees of cold water and up to 130 degrees of hot water in gives possibility of mounting on horizontal, vertical and inclined water supply systems with counter set upwards, sidewards or medium position H-V. Optionally, there available version of water meter for demineralised water for DN40-150 (cold and hot water) and with the input fot pressure sensor (M14x1.5) for DN50-150.
Advantages
- Permanent and efficient constructions, ensuring the flow of water in low loss of pressure and easiness in assembbly in random waterworks installations.
- 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 inflience on the metrological parameters, larger possibilities in designing and modernizing new used water meters connections.
- Very good anticorrosive and mechanical qualities of paint coat (pwder 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 freely adjustable rotary counter dial palced in the casing
- Possibility of electronic check-up of the metrological parameters of the water meters
- Modular structure
- Removable measuring insert in covered casing
- Magnetic clutch
Propeller water meters construction can be divided to body measurement machanism and counting mechnism. The water flow activates the impeller mounted in a measuring mechanism. The rotor is positioned coaxially or perpendicular (vertical) to the duct system of the body and through the screw-worm wheel drives the magnet located on the axis. Trough the magnetic coupling the water volume is shown on the counting mechanism.
For measuring of consumption of greater amounts of cold water with a tenmperature up to 30°C 0r 50°C, or hot water with a temperature up to 130°C, on the maximum working pressure up to 16 bar (PN16). Suitable for installation in the horizontal 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 stadard version are equipped with six-barrel counter (IP65, IP68 – optional) and painted cst-iron housing. Water meters are adapted to operation in the system of remote data transfer (AMR).
Mertological Class
Type MWN
- Cold water R100+200 – H, V
- Warm water R25+40 – H, V
Type MWN-G
- Cold water R100 – H, V
- Warm water R40 – H, V
Features
- Preeqipped for installation of : radio module for communication in the Wireless M-bus and impulse module (not applicable to water meters for hot water and versions with NK, NO, NKO, and NKOP transmitters)
- Wide measuring range
- Low starting rate
- Removable measuring panel
- Double-sided rotor bearing
- Easy reading of the water meters counter
- Hermetic counter – IP68 on request
- Hermetic counter – IP68 on request
- Counter mechanism with blockade againts multiple rotating, at rotation angle more than 360°
- Readings realibility
- In special option housing with connection for pressure measurement DN50-300 (cold and hot water)
- Optional version for demineralised water DN40-125 (cold and hot water)
- On request possibility of another drilling
Tecnical Characteristics
| Nominal diameter (DN) | 80 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 | 63m3/h |
| Overload Flowrate Q4 | 78,75 m3/h |
| Transitional Flowrate Q2 | 2.52 m3/h |
| Minimal Flowrate Q1 | 1.575 m3/h |
| Starting Flowrate | 0.35 m3/h |
| R measuring rate Q3/Q1 | 40 |