DN15 explosion-proof metal rotor flowmeterIt consists of two components, one of which is a conical tube that gradually expands from bottom to top; The other component of the rotor flowmeter is a rotor that is placed in a conical tube and can move freely along the centerline of the tube. When measuring the flow rate of a fluid with a rotor flowmeter, the measured fluid flows in from the lower end of the conical tube, and the flow of the fluid impacts the rotor, generating a force on it (the magnitude of this force varies with the flow rate); When the flow rate is large enough, the force generated lifts the rotor and raises it. At the same time, the measured fluid flows through the annular section between the rotor and the conical tube wall, and exits from the upper end. When the force acting on the rotor during the flow of the measured fluid is exactly equal to the weight of the rotor in the fluid (known as the displayed weight), the force on the rotor is in equilibrium and stays at a certain height. Analysis shows that; The position and height of the rotor in the conical tube correspond to the flow rate it passes through. The rotor material of the rotor flowmeter can be made of stainless steel, aluminum, bronze, etc.DN15 explosion-proof metal rotor flowmeter/rotor flowmeter

Explosion proof metal rotor flowmeterTechnical parameters:DN15 explosion-proof metal rotor flowmeter/rotor flowmeter

Measurement range: Water (20 ℃) 2.5-150000L/h, Air (20 ℃, 0.1013MPa) 0.07-4000Nm3/h

Range ratio: 10:1

Accuracy: 1.5/2.5

Work pressure: ≤ 6.4MPa

Working temperature: -40~350 ℃ (fluoroplastic lining -10~80 ℃)

Environmental temperature:- 20 ～ 80℃

Medium viscosity: DN15≤5mPa.S、DN25 ～ DN150≤250mPa.S

Tube material: 1Cr18Ni9Ti, 316L, lined with PTEF, etc

Process connection: flange, or as provided by the user

Steam fitting: flange, DN15/PN1.6， Or provided by the user

Power supply impact:<0.1% (excluding digital resolution [70 μ A)

Load impact:<0.1% (excluding digital resolution [70 μ A)

Current loss: 4~21.6mA, relative to 0% of the measured value

Load impedance: 0-800

Working voltage: 12.8-30VCD

Two wire Rext [K Ω]=(power supply [V] -12.7)/22mA

Output signal: 4-20mA

Environmental temperature:- 25 ～ 80℃

Outlet: M20 × 1.5

Explosion proof mark: ExibIICT6

DN15 explosion-proof metal rotor flowmeterProper installation precautions:

(1)The flowmeter must be installed vertically, and the measured fluid passes through the flowmeter from bottom to top. The inlet and outlet must have a straight pipe section of 5 times the diameter of the instrument. For newly installed pipelines, the pipeline should be flushed clean before installing the flowmeter.

(2)Valves should be installed upstream of the flowmeter, and flow regulating valves should be installed downstream at 5-10 times the instrument diameter. For small-diameter instruments, a filter should be installed upstream. If the measured medium contains magnetic substances, a magnetic filter should be installed before the flowmeter.

(3)When the measured medium is dirty, the tube and float should be cleaned in a timely manner.

(4)For the convenience ofMaintenance and replacementFlow meters need to be connected to bypass pipelines during instrument installation.

(5)explosion-proofMetal rotameterThe measurement accuracy is generally at level 1.5. When high measurement accuracy is required, it is not advisable to choose a metal tube rotor flowmeter

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