Glass tube variable area flow-meter
ø 1/2" - 4" | M250 series Omel Bombas e Compressores

The rotameter model "M250" is widely used for flow metering of
fluid liquids or gases in applications where rotameters with glass
tubes cannot be used due to high temperatures, pressure, density,
risk of flammability or the fluids corrosive properties.
PRINCIPLE
This is a flowmeter of the variable area type, totally manufactured in
316 or 316L stainless steel. The body contains metering elements,
that is: (the conical tube and float) in addition to the display reading
unit to which alarms or electronic transmitters can be connected. The
instrument is calibrated at the factory using fluids as a reference:
water for liquids and air for gases; in specific cases of higher viscosity,
the calibrating is done with oil of an equivalent viscosity or by the
fluid actually being measured. The required adjustments are done by
computer, taking the user's actual operating conditions into account.