Dry Dial Multijet Water Meter 405S SENSUS DN 20


Dry Dial Multijet Water Meter 405S SENSUS DN 20 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.

Main Characteristics
Magnetic transmission
Maximum water temperature 400C
Removable measuring mechanism
Insensitive to upstream disruptive elements
3550 orientable register
High resistance to water impurities
In option it may be equipped with a removable bonnet for quick and easy maintenance
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 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 mangers.

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 deparment results in an accuracy curve exceeding the requirements for the ISO 4064 standard.

The meter will remail  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 first 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 dial has a central disc whose rotation indicates the passage of water. This indicator can be used to reveal a downstream leak.

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 to 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 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 required.

Technical Charasteristics

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

Operational Characteristics
Starting Flowrate : 15 l/h
Minimum Flowrate ± 5% : 30 l/h
Transitional 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 to centreline : 28 mm
Thread : diameter  G1″B
33.25 mm
Thread     2,309 mm
Weight : 1.1 kg

Dry Dial Multijet Water Meter 405S SENSUS DN 20

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