High Speed Propeller Type Water Current Meter High Sediment Condition
Specifications:
1 The Rotary Diameter for Propeller: 60mm
2 The Hydraulic Thread Pitch for Propeller: H=120mm
3 Minimum Velocity: Vo≤0.06m/s(Normal)
Vo≤0.05m/s(Premium)
4 Measuring Range: 0.077m/s(Normal)
0.057m/s(Premium)
5 Operational Depth: 0.11.2m(Wading rod)
6 Accuracy:unbiased variance: m≤±1.2%(Normal)
m≤±1.0%(Premium)
V<0.2m/s:
Relative Error:σ≤±5%
7 Signal: two signals on every rotary
8 Operational Condition:035
9 Continuous Running Time:24h
10 Wading Rod (additional):
CG16-1 wading rod for open channel: 1600 mm in four sections;
Inner supporting type special wading rod for pipeline
Description:
LS20B portable velocity flow meter (Portable velocity apparatus) is an equipment used in water
conservancy for velocity flow measurement, designed for hydrological stations, mining factories,
environmental monitoring stations, farm irrigation, hydrogeology and so on.
Portable velocity flow meter is composed of spin paddle velocity sensor ( or other type spin cup and screw
propeller velocity apparatus), HT type velocity flow meter and 0.4 m x 4 16 measuring bar. Full set of
instruments are in the aluminum-alloy password boxes. When using, you can assemble it as a body and
connect the signal line, then the velocity of every open channel can be measured. And it can automatically
display the velocity and preset the flow of sectional areas.
Applications:
LS20B type propeller flowmeter is a kind of large range hydrological flowmeter, which is applicable to
measure high, medium, and low flow rate of rivers, lakes, channels, reservoirs and so on. It can also be
used for measuring high speed or ultrahigh speed flow rate in pressure pipe of power station and some
scientific experiment.
Measuring principles:
This instrument is designed based on the theory of areas of open channel’s velocity.After measuring the
velocity, the flow can be get:Q=V·S(S is sectional area)
Velocity measurement
When measuring velocity, the spin paddle type rotor flow meter will be pushed by waterpower. The
built-in signal apparatus produces RPM signal. The formula below can calculate velocity:
(K/b)N
V—————- C/a(m/s)
T
V: the average velocity (m/s)
B/K:the waterpower pitch of blades
a/C: velocity constant
T: lasting time(the unit is s)
N: the number of signals in T time
S: sectional area
Q: flow
K/b, C/a are constants
When measuring, you can setT and then measure N, so the velocity and flow can be automatically
calculated.
Competitive Advantage:
1) Especially extensive speed measurement range, one propeller can satisfy different measurement
requirements.
2) Fine sealing performance makes regular work in operational condition of high speed and high
sediment concentration possible. (Highest measurement speed: 4.3m/s, highest sediment concentration
100kg/m³)
3) The propeller adopts imported high quality engineering plastics,which is of high impulse strength,
stable geometry,and aging resistance. The docimasy coefficient K won't change in harsh natural condition nvironment.
4)Low-speed performance—internal friction characteristic.
5)Flexible installment manner and reasonable directional device structure can adapt direction of current.
6)Fine structure intensity makes installment and support firm and can stand 15m/s high flow rate impact.
7)Streamline overall and built-in type empennage counter weight reduces water resistance.No additional
deflection moment.
Price of Metlan
Please immediately call us to get the products price.Reducing your cost and improving your operating space is our goal and to make you redefine the quality and price.Metlan would be your honest partner. We will be able to discuss the best price for you.
Promise of Metlan
We promise to keep your long interest and offer relative training skills to your all operational
support,and to lead Metlan into your industry. Quality products and perfect service is our name card. With strong belief and sense of responsibility, continuing the business and creating the new field in measurement and control instrumentation area.
