Product Overview:

Metal tube float flowmeter is a commonly used variable area flow measurement instrument in industrial automation process control. It has the characteristics of small size, large monitoring range, and easy use. It can be used to measure the flow rate of liquids, gases, and vapors. Especially suitable for measuring medium flow rates with low flow rates and small flow rates.

The metal tube float flowmeter has both on-site display and intelligent remote transmission types, supporting multiple output protocols and providing users with a wide range of choices; In addition, the instrument adopts advanced 16 bit microprocessors and high-quality industrial components, ensuring the excellent performance of the flowmeter in various application scenarios.

Working Principle:

When the fluid passes through a vertical conical tube from bottom to top, the rotor is subjected to two forces: one is the vertical upward pushing force, which is equal to the pressure difference generated by the fluid flowing through the annular section between the rotating and conical tubes; The other is the net vertical downward gravity, which is equal to the gravity acting on the rotor minus the buoyancy of the fluid on the rotor. When the flow rate is high and the pressure difference is greater than the net gravity of the rotor, the rotor rises. When the pressure difference is equal to the net gravity of the rotor, the rotor is in equilibrium, that is, it stays at a certain position. A reading is engraved on the outer surface of the metal tube, and the flow rate of the measured fluid can be read based on the position of the rotor.

Technical Specifications:

Measurement range: Water (20 ℃): 1-200000l/h, Air (20 ℃, 0.1013Mpa): 0.03-4000m3/h

Range ratio: Standard 10:1, Special 20:1

◇ Accuracy: Standard Type 1.5 Special Type 1.0

◇ Pressure rating: Standard type: DN15-DN50 4.0MPa

Special type: DN15-DN50 25MPa

The pressure rating of the jacket is 1.6MPa, and special types should be negotiated with the factory before selection and ordering

Pressure loss: 7KPa-70Kpa

◇ Medium temperature: Standard type: -40 ℃~100 ℃, PTFE: 0 ℃~120 ℃

High temperature type: 100 ℃~450 ℃

◇ Medium viscosity: DN15: η<5mpa. s (f15.1-f15.3)

DN25:η<30mpa.s  

◇ Environmental temperature: Remote transmission type: 40 ℃~185 ℃ (LCD will not be damaged) LCD works normally at -30 ℃~80 ℃

Local pointer type: -40 ℃~100 ℃

◇ Connection form: Standard type: DIN2501 standard flange

◇ Special type: Any standard flange or thread provided by the user

◇ Cable interface: Explosion proof type with 1/2NPT internal thread, other M20 * 1.5 internal threads

Power supply: Standard type: 24VDC two-wire 4-20mA (12VDC-32VDC)

Alarm type: 24VDC three wire system 4-20mA (18VDC-28VDC)

Communication type: 85-265VAC 50Hz

Battery type: 3.6V, 7.5AH lithium battery, can be used continuously for three years

◇ Load characteristics: Two wire system: RLmax=50 * (-12) Ω=600 Ω @ 24V

Alarm type: Load resistance of 200 Ω AC type: Load resistance of 200 Ω

◇ Alarm output: upper or lower limit instantaneous flow alarm

Output of switch alarm relay

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