Introduction
Principle & Structure
The structure of FF metal tube rotameter is a vertical conical metal tube whose cross-sectional area gradually expands from bottom to top, and is equipped with a rotor 2 (or float) made of metal or other materials that can rotate freely. The liquid enters from the bottom of the metal tube and flows out from the top. When the fluid flows through the vertical tapered tube from bottom to top, the rotor is acted by two forces: one is the vertical upward pushing force, which is equal to the pressure difference generated by the fluid flowing through the annular section between the rotary and the tapered tube; The other is the vertical downward net gravity, which is equal to the gravity on the rotor minus the buoyancy of the fluid on the rotor. When the flow increases so that the pressure difference is large and the net weight of the rotor is cleaned, the rotor will rise. When the pressure difference is equal to the net weight of the rotor, the rotor is in a state of equilibrium, that is, it stays in a certain position. The reading is engraved on the outer surface of the metal tube, and the flow rate of the measured fluid is read according to the stop position of the rotor. The relay sub-flowmeter is a variable-section constant-pressure flowmeter. The pressure difference acting on the upstream and downstream of the float is a fixed value, and the annular cross-sectional area between the float and the conical tube changes with the flow. The position of the float in the conical tube reflects the flow rate.
Features & Benefits
● Metal structure, suitable for harsh working conditions such as high temperature and high pressure
● Suitable for small diameter and low flow rate medium flow measurement
● Simple structure, reliable operation, low maintenance and long service life
● The requirements for straight pipe sections are not high
● Wide flow ratio 10:1
● Single-axis sensitive indication, non-contact magnetic coupling transmission
Indicators… Features and Benefits
● Measure the angular displacement and linear displacement of the magnetic field
● Single-axis sensitive display
● Double-line LCD display, can display instantaneous flow and cumulative flow at the same time
● With parameter setting menu function
● With data recovery, data backup and power failure protection functions
● Alarm and cumulative pulse output function
● There are local display type and intelligent remote transmission type, support a variety of output protocols,
● Adopt 16-bit embedded microprocessor, with fast operation speed and high precision
● High-definition backlight LCD display, Chinese and English menu operation
● Optional battery-powered local display function
Metal tube rotameter features
● Pipes above DN200 cannot be measured
● The strong magnetic field affects the measurement accuracy
application
Mainly used in petrochemical, steel, electric power, metallurgy, textile, food, pharmaceutical, paper and other industries and municipal environmental protection, water conservancy and other fields.