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-term long- lasting and pefectly proved in cooperation with pulse transmitters and remote system for measuring data readings.
APPLICATION
Water meters are assigned to industrial measurement water usage up to 30 degrees of cold water an up to 130 degrees of hot water in relatively regular and strong flaw rate. Construction of the water meter gives possibility of mounting in horizontal, vertical and inclined water supply systems with counter set upwards, sidewards or in medium position H-V.
Optionally, there is available version of water meter for demineralised 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 pressure and easines in asembly in random waterworks installation.
- Lowered weigh of water meter
- Interchangeable and unified matering layer fitting to several sizes of body and assuring optimal water meter mnagement
- Standard water meter is suitable for remote readings AMR system
- The possibility of mounting the water meter in the intermediate position without the influence on the metrological parameters, larger possibilities in designing and modernizing new used water meters connections
- Very goog anticorrosive and mechanical qualities of panit 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 freedy adjustable rotary counter dial placed in the casing
- Possibility of electronic check-up of the metrological parameters of the water meter
- Modular structure
- Removable measuring insert in covered casing
- Magnetic clutch
Propeller water meters construction can be divided for body, measurement mechanism and counting mechanism. The water flow activates yhe impeller mounted in a measuring mechanism. The rotor is positioned coaxially or pependicular (vertical) to the duct system of the body and through the screw-worm wheel drives the magnet located on the axis. Through the magnetic coupling the water voume 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 wuth 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 standard version are equipped with six-barrel counter (IP65, IP68 – optional) and painted cast-iron housing. Water meters are adapted to operation in the system of remote data transfer (AMR).
Mertrological 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 meter counter
- Hermetic counter – IP68 on request
- Counter mechanism with blockade against multiple rotating at rotation angle more than 360°
- Readings reliability
- 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
Technical 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 | 100 m3/h |
| Overload Flowrate Q4 | 125 m3/h |
| Transitional Flowrate Q2 | 1 m3/h |
| Minimal Flowrate Q1 | 0.625 m3/h |
| Starting Flowrate | 0.25 m3/h |
| R measuring rate Q3/Q1 | 160 |