Current position > Product detail
『Electromagnetic flowmeter in high school physics』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1. The schematic diagram of the electromagnetic flowmeter is shown in the figure. The circular tube is made of non-magnetic material and has a uniform magnetic field in space. When the tube
When a conductive liquid passes through a stable magnetic field region through a hole, the electric field force acting on the charge is balanced with the Lorentz force, and qUd=qvB is obtained. The flow rate is Q=vS=UBd. π R2=π dU4B, so B is correct.
2. Summary and sorting of "Relevant technologies for the" qE=qVB "relationship in electromagnetic field applications" in high school physics
Summary and sorting of "Relevant technologies for the" qE=qVB "relationship in electromagnetic field applications" in high school physics
1. Principles and formulas Speed selector formula: q
v0B=Eq, i.e. v0=E/B. Principle: When the particle velocity satisfies the above relationship, the particle achieves uniform linear motion in a magnetic field. This principle is widely applied in the design of particle accelerators. The formula for a magnetohydrodynamic generator is U=v0Bd, which means q U/d=qv0B. Principle: By injecting plasma into a magnetic field, Lorentz force deflection is generated, forming a potential difference. The magnetohydrodynamic generator utilizes the conversion of electromagnetic fields to achieve direct conversion from internal energy to electrical energy, which is a highlight of future pure source energy technology. Formula for electromagnetic flowmeter: U/DB=v, then calculate the flow rate Q=U/DB * π ^ 2. Principle: Electromagnetic flowmeter calculates flow velocity and flow rate by measuring the potential difference generated by the motion of fluid in a magnetic field, providing us with an accu
2. Practical application example of magnetic fluid generator device: After injecting a magnetic field through plasma, the potential difference is determined using the left-hand rule.
. In practical applications, the electromotive force of the generator E=Bdv is a direct relationship between current and magnetic field. The voltage across the load resistor is not equal to Bdv, but RBdv/. The resistivity ρ=S/Id reveals the properties of the fluid.III. Innovative technology for knowledge expansion of magnetohydrodynamic generators: Magnetohydrodynamic generators use the plasma generated by combustion to form a potential difference under the action of a magnetic field, achieving direct conversion from internal energy to electrical energy.
. This principle not only improves energy efficiency, but also opens up new paths for the development of environmentally friendly energy. In summary, the related technologies of the "qE=qVB" relationship in electromagnetic field applications play an important role in high school physics, covering multiple aspects such as speed selectors, magnetohydrodynamic generators, electromagnetic flow meters, and Hall effect. These technologies have broad application prospects and important scientific value in practical applications.3. What is the signal of the electrode of the electromagnetic flowmeter?
The signal output by the electrode of the electromagnetic