Tube Rotameters

It operates on the principle of the variable area; the fluid in the metal tube raises the float in the tapered tube increasing the area of passage of fluid. By a magnetic coupling the inner float movement through a series of linkages and counterweight. The tube and the float combination determines the flow rate.

The inner float magnetic field is detected by the high sensitive magnetic field detection sensor, enabling us to show the digital readout.

As such this flowmeter does not require any electrical connection, since it operates on a battery. This got an inbuilt two-wire transmitter that just provides 24 VDC. and takes 4 – 20 ma signal.

• ➩ Local indication without the need for auxiliary power.
• ➩ Minimum pressure losses.
• ➩ Easy to read.
• ➩ Accurate measurement even at a higher flow (150 m3/hr).
• ➩ Suitable for low flow (8LPH).
• ➩ Default inbuilt transmitter of 4 – 20 mA (Loop powered).
• ➩ No movement assembly reduces the maintenance.

It operates on the principle of the variable area the fluid in the glass tube raises the float in the tapered tube increasing the area of passage of fluid.

The float moves up in proportion to the rate of flow of fluid and gets stabilized when the weight of the float is balanced by the upward hydraulic force.

The tube and the float combination determines the flow rate. The float has a sharp metering edge where the reading is observed by means of a scale mounted alongside the tube. The taper glass tube is formed of annealed borosilicate glass of extremely high accuracy bore.