Lxf-50-200 combination water meter

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APPLICATION

>> For measurement of high flows of cold potable water passing through the pipeline.

FEATURES

>> Wide measuring range: From Qmin of the small caliber water meter to Qmax of the large caliber water meter

>> As a dry meter, deposits in the register are avoided. This ensures a clear reading in long term service.

>> The main register may rotate more than 360 degrees for easily reading in any position.

>> Low head loss.

>> Lower starting flow.

>> Novel structure, simple maintenance.

>> Can be equipped with reed switch option.

>> Particularly suited in commercial, institutional places of assembly and facilities with fluctuating usage and flow rates.

WORKING PRINCIPLE

>> A changeover spring valve diverts flow to the appropriate meter, opening or closing according to pressure variations by changes in flow rate.

>> At low flow rate, the changeover valve closes and only the small meter in operation 2 water flows through the bypass meter, and the usage is recorded on its register.

>> When the flow rate increases, pressure is exerted on the large meter, until the flow rate reaches approximately one half the capacity of the bypass meter.

At this point, the drop in pressure causes the valve to open 1, and water flows through both the main meter and bypass meter, and the overall consumption is read by combining the main and bypass registers.

>> When flow is decreasing, the process in reversed. The valve is closed and water flows through the small meter.

CONSTRUCTION

>> The meter model LXF-50-200 combines a large caliber water meter (model LXLC-B) on the main line, a small water mete (model LXSC-E) on the bypass line, and a flow changeover valve.

Annotation: LXLC-B removable element woltman water meter.

LXSC-E multi-jet dry type vane wheel water meter.

WORKING CONDITION

>> Water temperature: <=40•C

>> Water pressure:<=1.6Mpa

MAXIMUM PERMISSIBLE ERROR

>> In the lower zone from Qmin inclusive up to but excluding Qt is+-5%b)

In the upper zone from Qt inclusive up to and including Qs is +-2%

INDICATION

>> Cubic meter(m3) and U.S. gallon (USG) for selecting

INSTALLATION

>> The meter must be installed with the direction of the flow as indicated by the arrow cast in the meter body.

>> A horizontal position with the register face upwards is recommended.

>> The meter must have 10 diameters straight pipe ahead of the meter and 5 diameters straight pipe after to insure proper flow through the meter.

>> The valves must be installed in the front and the back of the water meter.

ATTACHMENT

>> With every water meter, there will be two flange gaskets.

>> If you need the connecting flanges(two pieces), please specially request that.



No. Name Qty No. Name Qty No. Name Qty
1 Body(main water meter 1 9 Adapting flange 1 17 Bolt 2
2 LXLC-B except for the body 1 10 Coupling gasket 2 1 18 Bypass meter (LXSC-E) 1
3 Flat washer 8 11 Bolt 2 19 Nut 3
4 Bolt 8 12 Flat washer 2 20 Coupling 2 1
5 Flange o-ring 1 13 Street elbow 2 1 21 Coupling o-ring 1
6 Changeover vale 1 14 Coupling gasket 3 22 Street elbow 1 with non-return valve 1
7 Spring washer 8 15 Connecting plate 1 23 Coupling 1 1
8 Nut 8 16 Spring washer 2 24 Coupling gasket 1 1

MAIN TECHNICAL DATA COMFORMS TO Q/ZN 184-2003(company standard)

Type Size(mm) qs
Max Flow
qp
Nominal Flow
qt
Transitional Flow
qmin
Min. Flow
Min.
Reading
Max.
Reading
m3/h m3
LXF-50 50mmx15mm 30 15 0.12 0.03 0.0001 999999+99999
LXF-65 65mmx20mm 50 25 0.2 0.05 0.0001 999999+99999
LXF-80 80mmx20mm 80 40 0.20 0.05 0.0001 999999+99999
LXF-100 100mmx20mm 120 60 0.20 0.05 0.0001 999999+99999
LXF-150 150mmx40mm 300 150 0.80 0.20 0.001 9999999+999999
LXF-200 200mmx50mm 500 250 1.2 0.30 0.001 9999999+999999

DIMENSIONS AND WEIGHTS

Type Size
DN
Length
L
Width
W
Height
H
Height
G
Connecting flange Weight
kg
mm D
Outer dia.
D1
Bolt cirle dia.
Connecting Bolt
nxM
LXF-50 50mmx15mm 280 268 256 360 165 125 4xM16 20
LXF-65 65mmx20mm 370 305 266 400 185 145 4xM16 26
LXF-80 80mmx20mm 370 310 276 400 200 160 8XM16 27.5
LXF-100 100mmx20mm 370 320 286 400 220 180 8XM16 33
LXF-150 150mmx40mm 500 445 345 500 285 240 8XM20 64
LXF-200 200mmx50mm 560 525 375 500 340 295 8XM20 114.5



ACCURACY CURVE

PRESSURE LOSS CURVE


Type

lncr easing

open flow rate(m3/h)

Decr easing

Close flow rate(m3/h)

LXF-50

1.4

0.7

LXF-65

1.8

0.8

LXF-80

1.8

0.8

LXF-100

2.1

1.2

LXF-150

6.0

4.2

LXF-200

7.0

5.0

DATA OUTPUT OPTION
Type

1 pulse for each(m3)

main meter

bypass meter

LXF-50

0.1



1.0

0.001

0.01

0.1

1.0

LXF-65

LXF-80

LXF-100

LXF-150

1.0

10.0

0.01

0.1

1.0

LXF-200

The Detail of Lxf-50-200 combination water meter
Model No:Lxf-50-200 combination water meter
ProductName: Combination water meters
Product Origin:China
Brand Name: Aimei
Price Terms: FOB Ningbo
Payment Terms:T/T L/C
Supply Ability: 300,000-400,000sets/month
Delivery Lead Time:about 30 days
If you want to purchase or know more information about Lxf-50-200 combination water meter, please contact us!
Oline Support
113841342
 
chinaaimei
 
Sherry77872588
West Town Road 68, Shangtian Town Fenghua Zhejiang, China.
Tel:0086574-88637838 88633088
E-mail:sales@allwatermeter.com       sales@chinaaimei.com