LWF-A-S
Leakage Water Measuring System
Summary
Enable remote measurement of leakage water of banking, natural ground or dam.
This system is designed to measure leakage water of banking, natural ground or dam body. Checking the leakage collected in a channel and guided to a triangular weir initiates changes in the pressure water head. A buoyant load-cell water-level transducer detects the changes to measure the flow rate. Electrical output signals of the transducer are transmitted via cable, thereby enabling remote measurement and recording in combination with a recorder.
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LWF-A-S
Dam/Embankment Measurement, Water Level 300 mm
Specifications of Measurement-Water Channel and Triangular Weir
| Measuring Water Channel | Triangular weir with an acute angle of 60º or 90º (As required) Conforms to JIS. |
|---|---|
| Weir Width and Flow | Angle 60º, Width 45 cm, Flow Rate 18 to 260 L/min Angle 90º, Width 60cm, Flow Rate 110 to 1500 L/min Angle 90º, Width 80cm, Flow Rate 110 to 2900 L/min |
Water-Level Transducer Specification
Performance
| Rated Capacity | Water level: 300 mm |
|---|---|
| Nonlinearity | Within ±0.5% RO |
| Hysteresis | Within ±0.5% RO |
| Rated Output | 1.2 mV/V ±10% |
Environmental Characteristics
| Safe Temperature | -10 to 40ºC (Non-condensing) |
|---|---|
| Temperature Effect on Zero | Within ±0.03% RO/ºC |
Electrical Characteristics
| Input Resistance | 350 Ω ±2% |
|---|---|
| Output Resistance | 350 Ω ±2% |
| Cable | 4-conductor (0.5 mm2) chloroprene-coated shielded cable, 3 m long by 10 mm diameter, bared at the tip |
Mechanical Properties
| Safe Overloads | 120% |
|---|---|
| Weight | Approx. 19 kg |
Specifications
Mechanical Properties
| Degrees of Protection | IP67 (IEC 60529) |
|---|
Remarks
Differential pressure type can also be manufactured.