Two Signals Propeller Type Current Velocity Meter for Extensive
Speed Measurement Range
I. HL-B Type Handheld Reader
1. Introduction
Portable current velocity meter is an equipment used in water
conservancy for velocity flow measurement, designed for
hydro-logical stations,mining factories, environment monitoring
stations, farm irrigation, hydro-geology and so on. Portable
current velocity meter is composed of propeller velocity meter, HL
type handheld reader and measuring bars. Full set of instruments is
in the aluminum-alloy box.When using, you can assemble it as a body
and connect the signal cable, then the velocity of every open
channel can be measured. And it can automatically display the
velocity and present the flow of sectional areas.
The instrument is light and convenient with simple structure. It
has low power consumption, complete function, high automation
degree, stability and reliability, which complies with the national
measurement standards.
2. Specification
| Screen | 2*16 liquid crystal display |
| Measuring method | Positioning measuring bar or suspended cable |
| Temperature range | -10℃~45℃ |
| Communication | RS232 |
| Instrument calculation | Automatic calculation |
| Power supply | 5VDC,it can work for 40 hours after full power |
| Data storage | 99 articles |
I. ML1206B Type Propeller Velocity Meter
1. Introduction
ML1206B Type Propeller Velocity Meter is used to measure flow rate
of scheduled testing point.
This instrument has the following advantages: small volume, light
mould, compact form and convenient to use. It is applicable to
investigate water resource, perform runoff experiment and use in
irrigation ditch, small and big rivers. Meanwhile it is widely used
to test pipe flow measurement efficiency of small and medium-sized
mercury station, efficiency experiment of hydraulic machinery, and
sewerage monitoring.
The instrument is widely used in small channel flow measurement in
field irrigation. It can work normally in irrigation area of
20kg/m³ sediment concentration because of its fine spindle dynamic
sealing.
When it is modified slightly in installation structure, this
instrument can be applied in ship velocity measurement.
2. Specification
| Velocity range | 0.05~7m/s |
| Turning propeller diameter | Ø70mm |
| Propeller hydraulic pitch | H=120mm |
| Depth range | 40m |
| Measuring bar | Ø16mm*1.6m(can be discharged into four sections) |
| Signal frequency | two signals/rotation |
| Working temperature | 0-35℃ |
| Verification formula relative deviation | ƍ<±5.0%(m≤±1.2%, V<0.2m/s) |
| Continuous working time | 24 hours |
