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technical article
Product characteristics of vortex flowmeter and its output signal is unstable
2011-12-17 17:13:17

的产品特点与它的输出信号不稳定的原因 Let me explain to you the product characteristics of the vortex flowmeter and the reason why its output signal is unstable.

1. The crimp wire is not solid during the instrument wiring process, which causes the signal to be intermittent during the transmission process;

2.It has been proved in practice that in the scene where no gas flows, when the vortex flow sensor is in a changing magnetic field, the vortex flow sensor will sense an error signal and output it at the moment when the magnetic field changes.

When the change is over and the meter is in a stable magnetic field, the meter will output a normal signal; the vortex flowmeter is not suitable for installation in places with strong vibration, which is widely known by the user, but in frequent magnetic fields

In a changing situation, the vortex flow sensor will detect a signal output higher than normal;


3. When the vortex flow sensor is in this fluid state, the output data is suddenly large and small, and it can not reflect the production status at all; because of the high temperature and high humidity of the coke oven gas when leaving the factory, the gas transportation process

There will be moisture; gas flow will cause the water to fluctuate back and forth to form a pulsating flow;

4. The ground wire of the instrument does not meet the requirements of the specification, so that 50Hz interference in strong electricity enters, and when the normal signal is higher than 50Hz, a normal signal is output, otherwise an error signal is output;

5. Because the coke oven gas has many impurities and is easy to crystallize, the impurities condense on the sensor head, which will cause measurement inaccuracy; when the temperature increases, the impurities volatilize, the sensitivity increases, and the signal increases.

Resulting in data instability;

The characteristics of vortex flowmeters are as follows:


1. The installation position should minimize the impact of the steam hammer on the vortex street generator in the pipeline, and the vortex street flowmeter should not be used when the vibration is large but cannot be eliminated;


是利用流体振动原理的一种新型流量计、应用在石油,化工,冶金,造纸等行业,测量管道中液体,气体流量的仪表; 2. Vortex flowmeter is a new type of flowmeter using the principle of fluid vibration. It is used in petroleum, chemical, metallurgy, papermaking and other industries to measure liquid and gas flow in pipelines.

的压力损失较小、量程范围宽; 3. The vortex flowmeter has a simple structure, and the vortex flowmeter is directly installed on the pipeline, which overcomes the phenomenon of pipeline leakage. In addition, the vortex flowmeter has a small pressure loss and a wide measuring range;

4. The flowmeter has no moving parts, strong reliability, high accuracy and long life. It can accurately measure the instantaneous flow rate and cumulative flow rate of liquid in a wide range of flow rate. It is not affected by the temperature and pressure of the medium.

The effect of viscosity and composition, at the same time not blocking, not stuck, not easy to scale, high temperature resistance, high pressure, safety and explosion-proof, suitable for harsh environments!

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