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Cold water meter AT 7110B

Cold water meter with turbine wheel, type Woltmann for distributions and pumping facilities with an accuracy of R100. Flanged connection with a large flow area and low pressure. Can be mounted both horizontally and vertically. Prepared to be equipped withy communication module type Cyble with pulse, M-Bus or wM-Bus.

Dimension rangeDN 50 to DN 150
PN16
Temperature range+1ºC to +50ºC
MaterialCast iron

Variations

Article number Description Amount
AT 7110B50-200 DN50, Q3= 40, Length 200mm
AT 7110B65-200 DN65, Q3= 63, Length 200mm
AT 7110B80-225 DN80, Q3= 100, Length 225mm
AT 7110B100-250 DN100, Q3= 160, Length 250mm
AT 7110B125-250 DN125, Q3= 160, Length 250mm
AT 7110B150-300 DN150, Q3= 400, Length 300mm
AT 7275CY-M2 Accessories,  M-Bus module
AT 7275CY-KLF1 Accessories, Pulse module 10 l/pulse
AT 725CY-KLF10 Accessories, Pulse module 100 l/pulse
AT 7275CY-KLF100 Accessories, Pulse module 1000 l/pulse

Product information

Main facts

Dimension rangePNTemperature rangeMaterial

DN 50 - 150

16+1 °C to 50 ºCCast iron

Range of application

Measurment of cold water with a digital display showing total consumed amount. Suitable for distribution and pumping facilities and when low pressure loss is prefered. The meter is prepared to be equipped with a remote reading sensor of type M-Bus or pulse. 

Program text

UGE.35 Water meter for flow, pipe mounted with digital display, accumulated value.
Cold water meter AT 7110B.... type Woltmann, prepared for remote reading module, Q3 .... m3/h, DN .... with flanges PN 16.

Quality assurance

MID-certificate, CE-marking.

Material specification

ComponentMaterial
Body

Cast iron  

Meter chamberPPO
Support pinHard metall

Dimensions and weight

DN506580100125150
A200200225250250300
B224234242279279339
C82,592,5100110110142,5
D808080808080
Weight11,412,614,119,519,534
Measurements in mm, weight in kg.

Function and design

Cold water meter Woltex  type turbine wheel, where a free floating spherical turbine unit rotates in the water current, which entails low friction.
The movement is transfered with a magnetic coupling to the counter.

The counter is eight figures, hermetically sealed and also rotatable in 360o, so the counter display can be turned into suitable position. 
The meter is provided with an indicator for connection of remote reading module type Cyble, either M-Bus or Pulse. See separate product sheet AT 7275CY.

Function data

DN506580100125150
Q3, permanent flow (m3/h)4063100160160400
Q1 , minimum flow, (m3/h)0,40,631,01,61,62,5
Q2 Transitional flow, (m3/h)0,641,01,62,562,564,0
Q4, Overload flow (m3/h)5079125200200500
Q3/Q1, Ratio (R-tal) standard100100100100100100
Start flow, (m3/h)0,190,220,250,380,380,4
Pressure loss by Q3according to EN 14154, (bar)0,160,40,40,40,40,16

The values above (exclusive start and pressure loss) shows the meteorological properties according to the standard MID.
The meter actual values surpasses the given data.

Largest allowed margin of error

Flow rangeLargest allowed margin of error
Q1 - Q2±5%
Q2 - Q4±2%

Sizing

The smallest meter that can handle the given continuous flow Q3is selected. All though it's important to control that the pressure loss is not to high.  Short term overload is considered to be less than 1 hour each day, or at most 200 hours per year.

Accessories and options

Accessories
Remote reading modules type M-Bus or Pulse. For more information on remote readings modules see separate product sheet AT 7275CY.


Installation

The meter can be mounted horizontally or vertically with the meter head upwards or to the side. A straight inlet of 3 x DN in front of the meter is recommended. After the meter no straight outlet is needed, but there should not be any decrease in pipe in the direct vincinity of the meter. The system should be  flushed before the meter is mounted. During commissioning pressure impacts should be avoided. Flange gaskets are included in the delivery.

Maintenance and spare parts

Revision of the meter should be performed by a notified body. 

Marking

The cold water meter is blue with a gray plastic lid. The meter is marked Itron, Q3, R-value, manufaturing year, CE and serial number.