- Contact Person : Ms. Hu Jessie
- Company Name : Nanjing Metran Measurement & Control Instrument Co., Ltd.
- Tel : 86-25-52366120
- Fax : 86-25-52899138
- Address : Jiangsu,Nanjing,No.12, Rungu Road, Guli Industrial Zone, Jiangning District, Nanjing
- Country/Region : China
- Zip : 211146
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LJ12-1A portable river\open channel flow measurement
Introduction
This series of propeller flow meter is of small structure, light weight, and convenient to carry. It is applicable to measure mean flow rate of scheduled testing point in small rivers, channels, run-off experiment station, water resource investigation, and environmental protection wastewater monitoring occasions.
Assembled with CB-1 type mercury station flow rate measuring bar, it can measure medium and small mercury station signal flow. Assembled with time integration type suspend load sampler, it can measure flow rate. Equipped with suspension cable shaft, it can be used in deep water
Type: LJ12-1A (installation measuring bar diameter: φ16mm, each signal rotates:20 rotates)
Main Technical Parameter
² Propeller Structure: Spiral curve double-vane, laevo rotation, PC plastic
² Propeller Tactical Diameter D: φ60mm
² Propeller Water Power Pitch b: 120mm
² Instrument Run-up Speed: V0≤0.06m/s
² Flow Rate Measuring Range V: 0.07~7m/s
² Signal Part Structure: Magnetic steel-reed switch electronic switch
² Verification Curve Relative Error E: V≥0.2m/s, E<±1.5%; V<0.2m/s, E<±5%
² Swith Contact Capacity: Current ≤50mA, Voltage≤6V
² Reed Switch Operating Life: 70 million times
² Instrument Continuous Working Time: 2 hours (suspend load sediment concentration
≤0.5kg/m³, flow rate≤1m/s)
² Instrument Installation Measuring Bar Specification: CG16-1 type
² Suspension Cable Shaft Corner: LJ12-2A/C Type—horizontal 360°,vertical 20°
Flow Condition: When assembled with measuring bar, the bottom limit is 0.1m, the upper limit is depended on the length of measuring bar; When assembled with suspension cable shaft, 0.5~40m ;Water Temperature: 0~40°C;Suspend Load Sediment Concentration: ≤10kg/m³
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