Ls25-3 flowmeter, lLS25-3C flowmeter, LS full series flowmeter

>The LS25-3A type is a large range flowmeter used for high-speed measurement of river channels, pressure pipelines of hydropower stations, spillways, dam engineering closures, as well as medium and low-speed measurement of reservoirs, lakes, and general rivers. The LS25-3A flowmeter has a compact structure, flexible rotation, and good waterproof and sand proof performance.

2、 Main technical indicators

1. Rotary diameter of propeller: 120mm

2. Hydraulic pitch of propeller: b=250mm, left-handed

3. Propeller material: PC engineering plastic

4. Instrument starting speed: V0 ≤ 0.036m/s

5. Speed measurement range: 0.04-10m/s

6. Critical speed: Vk ≤ 0.14m/s

7. Mean square deviation of verification formula: m ≤ 1.5%

8. Instrument working water depth: 0.16m ≤ H ≤ 40m

9. Rotation speed between two signals: 20 revolutions per minute

10. Contact capacity: Current ≤ 300mA

Voltage ≤ 4.5V (inductance return)

The road should be equipped with a spark extinguishing circuit

11. Continuous working hours: ≤ 8 hours

12. Instrument working water temperature: from unfrozen water temperature to 40 ℃

13. Suitable for sediment concentration: ≤ 50kg/m3

LS25-3C2 rotary propeller flowmeter

Usage and characteristics:

The LS25-3C2 rotary propeller flowmeter is a new modified instrument that adopts the principle of magneto electric conversion, non-contact measurement, multiple signal acquisition, high sensitivity, good waterproof and sand proof performance, compact instrument structure, and is a large-scale flowmeter. Used for measuring high, medium, and low flow velocities in general rivers, reservoirs, lakes, estuaries, hydropower stations, and spillways. Equipped with HR-2 flow velocity measuring instrument.

Specification

1. Hydraulic pitch of propeller: K=250mm

2. Speed measurement range: 0.04-10m/s

3. Critical speed: Vk ≤ 0.12m/s

Starting speed of the instrument: V0 ≤ 0.035m/s

4. Mean square deviation: M ≤± 1.5%

5. Rotation speed between two signals: N=1/4 (4 signals per instrument rotation)

6. Working water depth: above 0.2m

7. Signal reception and processing: HR-2 flow velocity measuring instrument (adapted to linear relationships) can measure point flow velocity and point flow rate.

8. Power supply: DC6V (four No. 5 batteries)

9. Operating environment temperature: -10 ℃~45 ℃
The LS25-3D model is a large-scale flowmeter used for high-speed measurement of river channels, pressure pipelines, spillways, dam engineering closures in hydropower stations, as well as medium and low-speed measurement of reservoirs, lakes, and general rivers. The LS25-3D flowmeter has a compact structure, flexible rotation, and excellent waterproof and sand proof performance.
2、 Main technical indicators
1. Rotary diameter of propeller: 120mm
2. Hydraulic pitch of propeller: b=250mm, left-handed
3. Propeller material: PC engineering plastic
4. Instrument starting speed: V0 ≤ 0.025m/s
5. Speed measurement range: 0.04-10m/s
6. Critical speed: Vk ≤ 0.14m/s
7. Mean square deviation of verification formula: m ≤ 1.5%
8. Instrument working water depth: 0.16m ≤ H ≤ 50m
9. Rotation speed between two signals: 1 revolution and 1 signal (please order separately for 1 revolution and 2 signals)
10. Contact capacity: Current ≤ 400mA
Voltage ≤ 4.5V (spark extinguishing circuit should be added to the inductance circuit)
11. Continuous working hours: 8h (under the condition of sediment concentration of 50Kg/m3 and flow rate of 5m/s)
12. Instrument working water temperature: from unfrozen water temperature to 40 ℃
13. Suitable for sediment concentration: ≤ 50kg/m3