Main Characteristics
Magnetic transmission
Maximumwater temperature 40°C
Removable measuring mechanism
Insentive to upstream disruptive element 3550 orientable register
High resistance to water impurities
In option it may be equipped with a removable bonnet for quik and easy maintenace
Equipable with an HRI Sensor
Applications
The 405S is a dry dial multijet water meter with a protected magnetic transmission between the measuring element and the totalizer. It is PN 16 meter suited to hard network conditions.
It’s reliability, resistance to bad water qulity and noiseless operation will satisfy both end users and network managers.
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 return valve
Accuracy
The special design of this meter combined with the precision of the plastic parts injected by own. Sensus injection departement result in an accuracy curve exceeding the requirement for the ISO 4064 standard.
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 it very difficult working conditions.
Legibility
The display on 8 drum (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 to reveal downstream leak.
The plastic register casings equipped with a wiper for optimum legibility under all conditions. The 405S water meter operates in 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 t0 40 meters), the meter can be supplied with a cupper-glss register making it perfectly water-tight (IP68)
Marking
An arrow on both sides oh the body shows the direction of flow.
The years of manufacture and the inividual meter number are engraved the cover.
The manufacture’s name the type of meter, the nominal flowrate, the metrological class and the EC, patter approval number are printed on the dial.
Installation and Operating Instruction
The 405S meter must be instakked in a point of the pipeline, with the arrow cast on the body showing direction of the water flow. Before fitting the water meter, all pipework must be flushed out to remove all impurities.
An upstream stop valve is recommended to allow installation and removal of the water meter.
When connecting the meter with the water network, the upstream valve must be openeed slowly so that the water fills the meter as smoothly as posibble.
No special maintenance required.
Technical Characteristics
Metrological characteristic – EEC Directive 75/33
| Nominal Flowrate (Qn) | 2.5 m3/h |
| Maximum Flowrate (Qmax) | 5 m3/h |
| Minimal Flowrate (Qmin) | 50 l/h |
| Transition Flowrate (Qt) | 200 l/h |
| Operation Charactristics | |
| Starting Flowrate | 15 l/h |
| Minimum Flowrate ±5% | 30 l/h |
| Transtional Flowrate ±2% | 40 l/h |
| Maximum registration | 105 m3 |
| Lowest resolution | 0.05 lh |
| Pressure loss at | 0.8 bar |
| Working Pressure | 16 bar |
| Sizes and Weight | |
| Length | 190 mm |
| Width | 82 mm |
| Total Height | 104 mm |
| Height from base centreline | 28 mm |
| Theread | diameter G1/1/4″B 33.25 mm |
| Theread | 2.309 mm |
| Weight | 1.1 kg |