Frequent problems with vortex flowmeters Posted by : admin / Posted on : Sep 06， 2019

  The vortex flowmeter is a volumetric flowmeter that measures the volumetric flow rate of a gas, vapor or liquid, the volumetric flow rate of a standard condition, or the mass flow rate according to the principle of Karman vortex. It is mainly used for flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media.
  It is characterized by small pressure loss, large measuring range and high precision. It is almost unaffected by parameters such as fluid density, pressure, temperature and viscosity when measuring the volume flow rate. No moving mechanical parts, so high reliability and low maintenance. Instrument parameters can be stable for a long time. The vortex flowmeter uses a piezoelectric stress sensor with high reliability and can operate in the operating temperature range of -20 °C to +250 °C. There are analog standard signals and digital pulse signal outputs, which are easy to use with digital systems such as computers. It is a relatively advanced and ideal measuring instrument.
The main problems in practical applications are:
  1. Indication of long-term inaccuracy;
  2. There is always no indication;
  3. Indicates a wide range of fluctuations and cannot read;
  4. The indication does not return to zero;
  5. No indication when there is small flow;
  6. When the flow is large, the indication is OK. When the flow is small, the indication is not allowed.
  7. When the flow changes, the indication changes cannot keep up;
  8. The K factor of the meter cannot be determined, and multiple pieces of data are inconsistent.