Applications
The 405S is a dry dial multijet water meter with a protected magnetic transmission between the measuring element and totalizer. It is a PN 16 meter suited hard network conditions.
It’s reliability, resistance to bad water quality and noiseles operation will satisfly both end users and network manager.
Available options
- Copper/glass register (standard on DN25 to 40)
- HRI electronic sensor (Pulse Unit or Data Unit) for DN 15-40
- Cu/glass register for DN15 & 20 meters non return valve
Accuracy
The special design of this combined with the precision of the plastic parts injected by own. Sensus injection departement result in a accuracy curve exceeding requirement for the ISO 4064 standard.
The meter will reman its metrological chracteristics even if it is subject to bad water qualiti charged with sand or other particles.
Reliability
Larger particles present in water can be filtered first by the tubular stainer by the seat stainer. The smallest particles can go trough the meter without damage.
All the gears are situated in the dry part of the meter (totalizer) which removes any risk of blockage due to suspended matter in the water.
The 405S water meter keeps its metrological accuracy for many years of operation, even in very difficult working conditions.
Legibility
The display on 8 drums (5 for m3, 3 for decimals) and 1 pointer ensures perfect readability. The lowest resolution is 0.05 litres. The dial has a cental disc whose rotation indicates the passage of water. This indicator can be used reveal a downstream leak.
The plastic register casing is equipped with a wiper for optimum legibilityunder all conditions. The 405S water meter operatesin horizontal position and its dry dial can rotate up to 3550.
The dial can therefore be easily read under all conditions of use.
As an option, (standard for DN25 to 40 meter), the meter can be supplied with a cupper – glass register, making it perfectly water-tight (IP68)
Marking
An arrow on both sides of the body shows the directions of flow.
The years of manufacture and the individual meter number are engraved on the cover.
The manufacture’s name, the type of meter, the nominal flowrate, the metrological class and the EC, pattern approval number are printed on the dial.
Installation and operating Instructions
The 405S meter must be installed in alow point of the pipeline, with the arrow cast on the body showing direction of water flow. Before fitting the water meter, all pipework must be flushed out to remove all impurities.
An upstream stop valve is recomanded to allow installation and removal of the water meter.
When connecting the meter with the water network, the upstream valve must be opened slowly so that the water fills the meter as smoothly as possible.
No special maintenace is required.
Technical Characteristics
Metrological chracteristic – EEC Directive 75/33
| Nominal Flowrate (Qn) | 1.5 m3/h |
| Maximum Flowrate (Qmax) | 3 m3/h |
| Minimal Flowrate (Qmin) | 30 l/h |
| Transition Flowrate (Qt) | 120 l/h |
| Operation Charactristics | |
| Starting Flowrate | 10 l/h |
| Minimum Flowrate ±5% | 20 l/h |
| Transtional Flowrate ±2% | 30 l/h |
| Maximum registration | 105 m3 |
| Lowest resolution | 0.05 lh |
| Pressure loss at | 0.6 bar |
| Working Pressure | 16 bar |
| Sizes and Weight | |
| Length | 170 mm |
| Width | 82 mm |
| Total Height | 104 mm |
| Height from base centreline | 28 mm |
| Theread | diameter G3/4″B 26.44 mm |
| Theread | 1.814 mm |
| Weight | 0.9 kg |