DEFINITION:
Set of moving device that fitted into a closed conduit driven directly by water flow. Its turbine rotor rotates about the axis which is perpendicular to water flow.
WORKING PRINCIPLES:
Water flow drives vane rotate. Rotating times which is proportional to water flow speed are gathered, hence total volume passed through water meter is recorded.
CHARACTERS:
Types: Wet, dry, vertical, liquid sealed.
Wide measuring range, high accuracy.
Stable measuring capacity
Long working life
Low pressure loss
All technical figures are conformed with GB/T778. 1~3-1996 which is equivalent to ISO4064 Standard Class B.
WORKING CONDITION:
Water temperature≤45º C(Hot water meter≤90º C)
Water pressure≤1Mpa
MAXIMUM PERMISSIBLE ERROR:
From the minimum flow-rate (qmin) inclusive to the lower zone of the transitionalflow-rate (qt) exclusive: ± 5%.
From the transitional flow-rate (qt) inclusive to the higher zone of the maximum flow-rate (qmax) exclusive: ± 2%(hot water meter± 3%. )
| DN/Q | Q4=1.25Q3 Q3 | R=Q3/Q1 | Q2=1.6Q1 Q1 | R=Q3/Q1 | Q2=1.6Q1 Q1 |
| l/h |
| l/h |
| l/h |
| 15 | 3125 2500 | 80 | 50 31.25 | 100 | 40 25 |
| 20 | 5000 4000 | 80 | 80 50 | 100 | 64 40 |
| 25 | 7875 6300 | 80 | 126 78.75 | 100 | 100.8 63 |
| DN/Q | Class of measurement | Overload flow-rate q s | Permanent flow-rate q t | Transitional flow-rate q p | Minimum flow-rate q min |
| 15 | B | 3 | 1.5 | 120 | 30 |
| 20 | B | 5 | 2.5 | 200 | 50 |
| 25 | B | 7 | 3.5 | 280 | 70 |
Overall dimensions and weight
| Type | Size(mm) | Length(mm)L | Width(mm)W | Height(mm)H | Connecting Thread D | Weight (kg) |
| LXS-13D | 15 | 110 | 80 | 86 | G 3/4" | 0.6 |
| LXS-20D | 20 | 130 | 80 | 86 | G 1" | 0.7 |
| LXS-25D | 25 | 160 | 80 | 86 | G 1.1/4" | 0.9 |
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