Nubis is propeller, dry water meter Wolman’s type, with horozontal impeller axle, parallel to pipe axles. Nubis water meters are characterized by modern 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 mesurement of water usage up to 30 degrees of cold water and up to 130 degrees of hot water meter gives possibilityof mounting on horizontal, vertical and inclined or in medium position 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 sensors (M14x1.5) for DN50-150.
ADVANTAGES
- Permanent and efficient construction, ensuring the flow of water in low loss of pressure and easiness in assembly in random water works installations
- Lowred weight of water meter
- Interchangeable and unified matering layer fitting to several sizes of body and ansuring optimal water meter management
- Standard water meter is suitable for remote reading in AMR system
- The possibility of mounting the water in the intermediate position without the influence on the metrological parameters, larger possibilities in designing and modernizing new used water meters connections
- Very good anticorrosive and mechanical qualities of paint coat (powder paint-epoxy)
Characteristic Features
- Resistant to the external field, according to EN1415-3
- Low starting slow rate
- Wide measuring range
- Ease read-out due a freely adjustable rotary counter dial placed in the casing
- Possibility of electronic check-up of the merlological parameters of the water meter
- Modular structure
- 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 mechanism. The rotor is positioned coaxially or pependicular (vertical) ti 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 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). Suitable for installation in the horizontal hoses (pipelines) with the counter directed upwards (H), in vertical or horizontal hoses with the counter directed side wards (V) or in diagonal hoses (H/V). MWN water metes 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).
Metrological 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 :
- Preequipped 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 vanel
- Double-sided rotor bearing
- Easy reading of the water meter counter
- Hermetic counter – IP68 on request
- Counter mechanism with blockade againts multiple rotating, at rotation angle more than 360°
- Reading 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 Cracteristics
| 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 | 100 m3/h |
| Overload Flowrate Q4 | 125 m3/h |
| Transitional Flowrate Q2 | 4 m3/h |
| Minimal Flowrate Q1 | 2.5 m3/h |
| Starting Flowrate | 0.6 m3/h |
| R measuring rate Q3/Q1 | 40 |