KP-SDM80 Series

Measuring principle
This series of metal tube float flowmeters is mainly composed of two parts: sensors and indicators. transmit
The sensor is mainly composed of connecting flanges, measuring tubes, floats and upper and lower guides; Indicators mainly
It is composed of curved housing, magnetic transmission system, dial and electric remote transmission system
In the vertical, conical measuring tube, there is a measuring component that can be moved up and down – a float
(Figure 1) Measuring the cone-tube water magnet, the float is subjected to the fluid as it passes through the Aphrotube from the bottom up
the force that moves upwards along the conical tube. When the flow rate of the fluid increases, the displacement of the float increases
Big: The other way around. When the flow rate of the fluid decreases, the displacement of the float decreases. That is, fluid flow
The size of the quantity determines the position of the float in the measuring tube, and thus the float and the conical tube
The size of the annular area between the floats when the flow of the fluid is kept at a constant flow rate Q
In a state of dynamic equilibrium, stay in a position in the conical tube h, at this time, the float and the conical tube
The annular area between remains constant. The float is acted upon by three forces: the gravitational force of the float G, the float
The buoyancy force F on the sub and the force P on the float on the fluid, these three forces reach equilibrium. according to
The Bo equation of fluid dynamics, the principle of force equilibrium and the law of fluid continuity can be calculated
At this time, the instantaneous fluid flow through the annular area is adopted, so the metal tube float flowmeter is used
The principle of variable area measurement flow
Inside the float, a high-performance permanent magnet is inserted, and when the float is in equilibrium, a uniform and stable magnetic field is formed around the float. at
A magnetic sensor is installed on the outside of the conical tube, so that the linear displacement of the float in the measuring tube can be transmitted to the indicator in a non-contact form
After detection and processing, it is finally displayed on the indicator dial and outputs the corresponding standard 4~20mA current signal.