|Place of Origin:||China|
|Minimum Order Quantity:||1pc|
|Packaging Details:||Packed in aluminum box firstly,and then reinforced with wooden case for outer packing|
|Delivery Time:||5 working days after received your payment|
|Payment Terms:||T/T or western Union|
|Supply Ability:||100pcs per month|
|Product Name:||Propeller Type Current Meter||Application:||Hydrological Field Etc.|
|Propeller Tactical Diameter:||Φ120mm||Propeller Water Power Pitch:||200mm|
|Output Signal Frequency:||2 Signal/rotate||Ambient Water Temperature.:||0-35℃|
|Packing:||Aluminium Alloy Box|
Reliable LS20B Propeller Type Current Meter for Hydrological Field
1 The Rotary Diameter for Propeller: Ф60mm
2 The Hydraulic Thread Pitch for Propeller: H=120mm
3 Minimum Velocity: Vo≤0.06m/s(Normal)
4 Measuring Range: 0.07～7m/s(Normal)
5 Operational Depth: 0.1～1.2m(Wading rod)
6 Accuracy:unbiased variance: m≤±1.2%(Normal)
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 Ф 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.
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
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)
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:
V＝—————- ＋ C/a(m/s)
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
K/b, C/a are constants
When measuring, you can setT and then measure N, so the velocity and flow can
be automatically calculated.
1)Especially extensive speed measurement range,one propeller can satisfy
different measurement requirements.
2)The propeller adopts imported high quality engineering plastics
3)Low-speed performance—internal friction characteristic.
4)Flexible installment manner and reasonable directional device structure can
adapt direction of current.
5)Fine structure intensity makes installment and support firm and can stand
15m/s high flow rate impact.
6)Streamline overall and built-in type empennage counter weight reduces water
resistance.No additional deflection moment.
Online operation of computer (available if mentioned in your order)
Connect current meter with communication interface by exclusive communication cable,
open computer to enter WINDOWS－Program－Accessories－Communication－Hyperterminal,
set Baud rate to 2400,communication bit to 8,pause bit to 1,parity check to none,flow control
to software, choose correct communication interface, connect signal wire of meter, input “v”, it
will send out 99 storage data to computer screen automatically.
K=7800 C=0.050 T=0106.5 N=0015 V=0.160
K=7800 C=0.050 T=0108.4 N=0016 V=0.165