Metal rotameter is a one of the changing area flowmeter, in a vertical conical tube expand from down to up, the gravity of the float with circular cross-section is borne by hydrodynamic force, the float can rise and fall freely in the conical tube.
It can move from down to up under the flow velocity and buoyancy force, after balancing with the float weight, the flow is transmitted by magnetic coupling to the dial indicating the flow.
It can be divided into glass and metal rotameter. The rotameter is mostly used for industry, the corrosiveness medium usually adopts the glass material for small pipe diameter, because the glass material is easy broken, the key control point of the rotameter can adopt all titanium and other precious metals as well.
Rotameter is a one of measuring flow instrument which based on the float position of changing area. Adopting all metal structure and Modular conceptual design, small pressure loss, large range ratio(10:1), easy to maintain, can be widely used in flow measurement and process control in complex, harsh environment and various medium conditions.
Metal rotameter is one of the most commonly used flowmeter in industry and laboratory,
It has simple and intuitive structure,small pressure loss, convenient maintain and other features. Not only it can be used to measuring the small flow which the measurement pipe diameter is less tan D<150mm,but also can measure the flow of corrosive medium.it must be installed the vertical orientation pipe section ,to ensure the fluid medium can pass through the rotameter from bottom to top.
Measurement Range: water (20 ℃) 6 ~ 150000 L / h
Air (0.1013mpa, 20 ℃) 0.05 ~ 4000 m3 / h
Range Ratio : 10:1 (special type 20:1)
Accuracy: 2.5%, 1.5% (special type 1.0%)
Working Pressure: DN15 ~ DN50 PN4.0MPa (special 25MPa)
DN80～DN100 PN1. 6Mpa (special 16MPa)
Pressure Grade: 1.6Mpa
Medium Temperature Standard : - 80 ℃ ~ + 220 ℃
High Tmperature : 300 ℃
PTFE lining : ≤ 85 ℃
Ambient Temperatur:- 40 ℃ ~ + 120 ℃ (electric remote transmission type ≤ 65 ℃)
Medium Viscosity: DN15: ≤ 5MPa s ≤30mPa. s)
DN25： ≤250mPa. s
Instantaneous Flow Display Value Range: 0 ~ 9999.99
Display Value Range Of Cumulative Flow: 0 ～ 999999.90
Output Signal: Two-wire system, 4 ~ 20mA
Power Supply: 24VDC
Connection Mode: Standard flange
Special type: Flange standard provided by user
Threaded Connection Type: DIN11851 or user specified
Electrical Interface :M20 × 1.5、PG11、1/2”NPT
Overall Height Standard Type: 250mm (except for other installation methods)
Protection Grade: IP65
Explosion-proof Level: ExdIIBT4
|Standard Specification Of The Series Metal Rotameter|
|DN(mm)||Flow Range||KPa Pressure Loss|
|Conventional Type||Anti-corrosive Type||Conventional Type ，anti-corrosive type|
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