Combination Woltman Water Meter combined with multi jet water
meter, magnetic driven
Magnetic drive Combination Woltman Water Meter combined with multi
jet water meter
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 degreesfor 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℃
- 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(mainwatermeter | 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 | Street1elbow111with1non-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-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 | 999999+99999 |
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-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 |
Type | lncr easingopen flow rate(m3/h) | Decr easingClose flow rate(m3/h) |
LXF-80 | 1.8 | 0.8 |
LXF-100 | 2.1 | 1.2 |
LXF-150 | 6.0 | 4.2 |