LS300-A Portable Flow Velocity Meter Handheld Propeller Type Flow Speed Tester for Rivers/Lakes/Open Channel/Reservoirs

LS300-A Portable Flow Velocity Meter Handheld Propeller Type Flow Speed Tester for Rivers/Lakes/Open Channel/Reservoirs

Description:
- The LS300-A flow velocity and flow rate measuring instrument, as the main supporting product of traditional rotary flow velocity instruments, is used to receive signals generated by the flow velocity meter during a given period, and automatically calculate the average flow velocity, flow rate, expandable function for measuring water level, and calculation of regular cross-sectional area during that period.
- The LS300-A flow rate measuring instrument is mainly suitable for receiving signals generated by various reed tube flow rate meters, contact wire rotor flow rate meters, fiber optic flow rate meters, Hall type flow rate meters, and has storage and communication functions.
- Instruments can estimate instantaneous flow and cumulative flow. Regarding flow calculation tools, irrigation channel system water measurement standards GB/T201303-201.

Specification:
- Velocity measuring formula: (m/s) (automatic calculation)
- Velocity measuring range: 0.01 - 1.00 (m/s)
- Measuring error: ≤1.5%
- Display: 8 x 4 bit Chinese Character LCD display
- Measuring method: wired
- Working temperature: 0℃ ~ 50℃
- Power consumption: < 50mA
- Power supply: DC7.2V
- Communication method: RS232
- Clock error: ≤2min/year

Measurement Principle:
- Flow velocity measurement: under hydraulic propulsion, the flow velocity meter has a built-in signal device that generates a rotational speed signal. Therefore, the flow velocity can be calculated based on the total number of signals generated by the flow meter during a certain unit period using the following formula: V=bR/T + a [corresponding to the original standard V=KR/T + C (m/s)]
- In the formula:
  V - average flow velocity during the flow measurement period (m/s)
  b - propeller (or cup) hydraulic pitch (m)
  A - constant of the flow meter (m/s)
  T - duration of flow measurement (s)
  R - total number of revolutions of the flow meter rotor during T period
- For an individual flow meter, b and a are constant values. Therefore, when measuring flow, as long as T and R values are measured, the flow velocity can be calculated.
- Flow measurement: Enter the type of the measured section and manually input (or measure through auxiliary sensors) the water level and width of the regular section to calculate the section area. The instrument also has Q=V*S to calculate the flow velocity Q value.

Package Included:
- 1 x Flow Velocity Meter
- 1 x LS300-A Testing Rod
- 1 x Charger
- 1 x Connection Signal Cable
- 1 x User Manual
- 1 x Portable Aluminum Box