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:
Counter:vacuum sealed, frost proven, keeping clear reading for long.
Magnetic transmission free from disturbance.
Fine brass meter body and cover. Outside adjustable. painted available as demanded.
WORKING CONDITION:
Water temperature≤45ºC(Hot water meter≤90ºC)
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=1.6 | 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 |
| 32 | 12500 | 10000 | 80 | 200 | 125 | 100 | 160 | 100 |
| 40 | 20000 | 16000 | 80 | 320 | 200 | 100 | 256 | 160 |
| 50 | 31250 | 25000 | 80 | 400 | 250 | 100 | 250 | 156.25 |
| Nominal size DN (mm) | Class of measurement | Overload flow-rate q s (m 3 /h) | Permanent flow-rate q p (m 3 /h) | Transitional flow-rate q t (l/h) | Minimun flow-rate q min (l/h) |
| 15 | B | 3 | 1.5 | 120 | 30 |
| 20 | B | 5 | 2.5 | 200 | 50 |
| 25 | B | 7 | 3.5 | 280 | 70 |
| 32 | B | 12 | 6 | 480 | 120 |
| 40 | B | 20 | 10 | 800 | 200 |
| 50 | B | 30 | 15 | 3000 | 450 |
Overall dimensions and weight
| Type | Size (mm) | Length (mm) L | Width (mm) W | Height (mm) H | Connecting Thread D | Weight (kg) |
| LXSG-15E1 | 15 | 165 | 80 | 100 | G 3/4"B | 1.1 |
| LXSG-20E1 | 20 | 190 | 98 | 105 | G 1"B | 1.7 |
| LXSG-25E1 | 25 | 220 | 105 | 110 | G 1 1/4"B | 2.4 |
| LXSG-32E1 | 32 | 260 | 120 | 120 | G 1 1/2"B | 2.8 |
| LXSG-40E1 | 40 | 300 | 120 | 155 | G 2"B | 5.2 |
| LXSG-50E1 | 50 | 300 | 125 | 155 | G 2 1/2"B | 7.3
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