Water Meter 405S Sensus 1/2 inch is a dry dial multijet water meter with a protected magnetic transmission between the measuring element and the totalizer. It is a PN 16 meter suited to hard network conditions.
Its reliability, resistance to bad water quality and noiseless operation will satisfy 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 meter combined with the precision of the plastic parts injected by own Sensus injection department results in an accuracy curve exceeding the requirements for the ISO 4064 standard.
The meter will remain its metrological characteristics even if it is subject to bad water quality charged with sand or other particles.
Reliability
Larger particles present in water can be filtered firs by the tubular strainer. then by the seat strainer. The smallest particles can go through 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 plastic register casing is 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 to 40 meters, *The meter can be supplied with a cupper- glass register, making it perfectly water-tight ( IP 68 )
Marking
An arrow on both sides of the body shows the direction of flow.
The year of manufacture and the individual meter number are engraved on the cover.
The manufacturer’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 Instruction
- The 405S meter must be installed in a low 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 opened slowly so that the water fills the meter as smoothly as possible.
- No special maintenance is required.
Technical Charasteristics
Metrological characteristic – 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
Operational Characteristics
- Starting Flowrate : 10 l/h
- Minimum Flowrate ±5% : 20 l/h
- Transitional Flowrate ±2% : 30 l/h
- Maximum registration : 105 m3
- Lowest resolution : 0.05 l
- 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 to centreline : 28 mm
- Thread : diameter G3/4″B
26.44 mm - Thread 1,814 mm
- Weight : 0.9 kg
