The metal tube ratometer flowmeter is a kind of variable area flow quantity
measuring instrument. It has such features as small volume, large detection range and
convenient operation. It is especially suitable to measure flow quantity of media with
small flow velocity and small flow quantity.
Intelligentized metal tube rotameters have field indication type and intelligentized
remote transmission type. So it provides the customers with very wide selection
spaces. In addition, advanced 16 bits micro processor and high quality industrialized
components are adopted in the instrument, which ensures excellent performances of
the flowmeter in various kinds of application situations.
The structure of a rotameter is that a rotor 2( or called as floater )made from metal or other materials which can rotate freely is
installed in a vertical cone-shaped metal tube 1 whose sectional area is increased gradually from down to up. The fluid to be
measured enters from the bottom of the metal tube and effluent from the top.
When the fluid flows upwards through the vertical cone-shaped tube, the rotor is affected by two forces: one is the driving force
vertically upwards, it is equal to pressure difference generated by that the fluid flows upward through the annular section between
the rotor and the cone-shaped tube; the other is vertically downwards net gravity, it is equal to the difference between the gravity
encountered by the rotor and the float force of the fluid on the rotor. When the flow quantity is increased to make that the pressure
difference is larger than the net gravity of the rotor, the rotor will rise. When the pressure difference is equal to the net gravity, the
rotor will stay in a certain position. There are scales on the external surface of the metal tube and the flow quantity of measured fluid
can be read according to the staying position of the rotor.
The rotameter is a variable area and constant pressure difference flowmeter. The pressure difference acting on upstream and
downstream of the rotor is a constant value while the annular section area between the rotor and the cone-shaped tube changes
with flow quantity. The position of the rotor in the cone-shaped tube reflects the value of flow quantity.
Main technical parameters of LZ series intelligent metal tube rotameter flowmeter
- Turbine flow meter
- Electromagnetic flow meter
- Vortex flow meter
- metal tube rotameter
- glass tube rota meter
- panel mount Acrylic Flow meter
- ultrasonic flow meter
- open chnel flow meter
- solids flow meter
- volumetric flow meter
- Throttling device and differential pressure flow meter
- thermal instrumentation
- Flow Totalizer and display instrument