Digital Metal Tube Rotameter

Digital Metal Tube Rotameter It operates on the principle of variable area; the fluid in the metal tube raises the float in the taper tube increasing the area of passage of fluid. By a magnetic coupling the inner float movement through a series of linkages and counter weight. 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, enable us to show the digital readout.

As such this flowmeter does not require any electrical connection, since it operates on battery. This got an inbuilt two wire transmitter just provide 24 vdc. and take 4 – 20 ma signal.

Benefits Of Spink Controls’ Variable Area Flow Meters

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

Maximum Flow And Pressure Loss

Line size NB 20 °C. water flow m3/hr 0 °C. 1 atm Air flow Nm3/hr Approx. Pressure Loss mm WC
15 0.2 – 1.2 6 - 35 200 – 225
20 0.4 – 2.0 8 – 60 220 – 230
25 1 – 5 30 – 150 200 – 270
40 2.5 – 10 70 – 300 200 – 250
50 3.5 – 17 100 – 500 225 – 260
65 6 – 30 200 – 900 225 – 240
80 10 – 45 300 – 1200 225 – 260
100 20 – 100 600 – 3000 350 – 700
125 30 – 120 900 – 4000 300 – 850
150 30 – 150 900 – 4500 350 – 950