Standard Water Flow Velocity Meter for Precise Measurement

Brief Introduction

The LS300-A portable velocity flowmeter is specially developed for open channel velocity and flow measurement in the field by hydrological stations, factories and mines, monitoring stations, farmland irrigation and drainage, hydrogeological surveys and other departments. Thedevice has a simple structure, is light and convenient, consumes less power, has complete functions, is highly automatic, stable and reliable, and meets the national standard for open channel flow measurement. It is equipped with an 80-degree high-temperature propeller.

The LS300-A intelligent flow velocity meter is equipped with a new OA-type optical fiber velocity propeller sensor. The propeller helix angle, pitch, manufacturing process and materials have been redesigned. The propeller diameters are 15mm and 12mm respectively (the propeller reflective surface adopts advanced electroplating technology, which is wear-resistant and has a strong signal). The starting velocity is low, and the starting velocity, velocity range, linearity, concentricity, calibration coefficient and mean square error are greatly improved and improved compared with previous sensors.

Specification

Model	LS300-A
Product Name	Standard Groundwater Velocity Flow Meter
Product Weight	5 Kg
Material	Plastic and Stainless Steel
Size	3.5 cm x 20 cm x 2.5 cm
Colour	White
Velocity Measurement	0.01 – 4.00 m/s
Working Depth	20 m
Temperature Range	– 20 °C to 60 °C
Power Supply	DC 8.4 V
Display	4 x 16 bit LCD

Features

• Low power consumption, power supply is DC5V, ≤15mA, convenient for AC and DC power supply
• Use mf-89 programmable function calculator to read the result value
• The whole flowmeter adopts module structure, which is convenient for maintenance and replacement. When measuring the original body, it can be powered by dry batteries, which is easy to carry
• the length of the sensor signal line can be within 100m, without adjusting the power supply voltage of the transmitting original component, simplifying the operation
• The transmitting original component has a long life of more than 10,000 hours
• The transmitting light beam has strong penetration and can be used for liquids with a certain turbidity
• The sensor uses optical fiber light guide. In addition to non-contact detection, it has the advantages of waterproof, temperature resistance, explosion-proof, strong magnetic field resistance and electrical interference resistance
• The sensor head is miniature and can be used in narrow measurement environments
• Measuring flow rate in liquid is not affected by liquid temperature and quality

Product Details

Applications

Technical Parameters

LS300-A portable flow meter technical parameters:
Sampling time: 1~99s arbitrarily set
Speed ​​range: 0.01-4.00m/s (up to 5.00m/s)
Flow measurement error: ≤1.5%
Display: 4X16-bit LCD display
Measurement method: measuring rod positioning measurement depth 0.45
Hand-in
Sampling capacity: 9999 (with bright automatic calculation direct LCD real-time display)
Speed: the highest can be equipped with 40cm sensor above 3KCR.P.S

Measurement & Calculation Method

This instrument is designed based on the velocity-area method principle of open channel flow measurement. The flow rate can be measured to obtain the flow rate Q=V.S (S is the cross-sectional area)

1. Flow rate measurement:

When measuring the flow rate, the propeller rotor flowmeter is driven by hydraulic power to rotate, and the built-in signal device generates a rotation signal. The flow rate is calculated by the following formula:
V=KN / T + C (m/s) (automatic calculation)

Within the formula:
V: average flow rate during the flow measurement period (m/s)
K: hydraulic pitch of the blade
C: flowmeter constant
T: flow measurement duration (unit: s)
N: number of signals during the T period

When this device is used, K and C are both constants. When measuring flow, as long as T and N are measured, the flow rate can be calculated

2. Flow rate calculation:

Flow rate measurement is based on the velocity-area method of open channel flow measurement. First measure the flow rate and then multiply it by the cross-sectional area to obtain the flow rate.

Package List

① 1 x High strength protection box

② 1 x Instruction Manual

③ 1 x Charger

④ 1 x Signal Connection

⑤ 1 x Certificate

⑥ 1 x Spin Pulp

⑦ 1 x Portable Velocity Meter