Metal Tube Variable Area Flow Meter

Metal Tube Aariable Area Flow Meter เครื่องวัดการไหลพื้นที่แปรผันของท่อโลหะ วัดการไหลโดยผ่านช่องว่างวงแหวนระหว่างท่อ tapper การวัดลูกลอยจากล่างขึ้นบน ความดันต่างที่ด้านบนและด้านล่างของลูกลอยเพื่อสร้างแรงยก เมื่อแรงยกบนทุ่นแรงกว่าน้ำหนักของลูกลอย ลูกลอยจะดั

Stock Status: 1,000 pcs
Delivery Status: 30-40 days
Excluding Tax


Metal tube rotameter measured medium flows through the annulus space between measuring tapper pipe and float from bottom to top, producing differential pressure on the top and bottom of float to form lifting force. When the lifting force on float is stronger than the weight of float in the fluid, the float will rise, annulus area will also increase. The flow rate of fluid at annulus space will suddenly decrease, the differential pressure on top and bottom of float decreases, the lifting force on the float also decrease till lifting force and the weight of float keep balance, float will stay at a location. The height of float is the flow of measured medium. There’s magnetic steel in the float, while float moves up and down with medium, magnetic field will change with the movement of float.

Product Feature

1. Metal tube rotameter has simple structure, good stability and reliability.

2. Independent of medium’s physical and chemical states such as conductivity, dielectric constants, etc.

3. Applicable for all kinds of medium environment such as corrosive, toxic and explosive one.

4. Interface measurement or level measurement of 2 kinds of medium with different density.

5.Two-wire 4~20mADC signal output, 0.8’’ or 0.56” LED digital display.

Technical Data

Measuring range Water:1~200000L/H(20℃), Air: 0.03~6000m3/h (20℃, 0.1013MPa)
Measuring range proportion Standard: 10:1; Special: 20:1
Accuracy class Standard:1.5; Special: 1.0
Pressure class Standard:DN15~DN50≤4.0MPa; DN80~DN200≤1.6MPa, High pressure:DN15~DN50≤32MPa;DN80~DN200≤16MPa
Pressure loss 7kPa~70kPa
Medium temperature Standard:-40℃~+100℃; PTFE:-50℃~+100℃, High pressure:110℃~+450℃
Medium viscosity DN15:Ƞ<5mPa.s(F15.1~F15.3), Ƞ<30mPa.s(F15.4~F15.8), DN25:Ƞ<250mPa.s; DN50~DN200:Ƞ<300mPa.s
Environment temperature Remote type: -40℃~+85℃, On-the spot needle indicator: -40℃~+100℃
Connection type Standard: DIN2501 standard flange; special: c

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