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 |
