News

Precautions in the actual application of liquid mass flowmeter

The Coriolis mass flow meter is made for all branches during art continuous flow measurement of a wide range of applications. Liquid mass flowmeters directly measure and display the measured medium temperature and density, mass flow rate may also display other parameters of the measured medium, regardless of the latter with the measured medium, such as density, temperature, pressure and flow condition.
The mass flow meter is suitable for measuring liquids, liquids containing solids, multiphase mixtures; measuring the concentration of each substance in the mixture; and measuring mass flow, density, temperature, flow, cumulative mass and volume.
Meter currently in use the multi display as volume flow rate, oil production and crude oil quality measurement needs. Usually oil viscosity, water content nor stable, Coriolis meters can be measured directly by mass of crude oil, and may be measured continuously, without affecting the physical parameters of the oil, high accuracy, is widely used in oilfield production.
Mass flow meters are generally simpler to use, as long as they are installed correctly and can be used with simple commissioning. In daily use, it is only necessary to adjust the zero point of the instrument regularly, and almost no maintenance is required. However, when using it, we also need to pay attention to the following matters:
(1) The success or failure of the mass flow meter application has a direct relationship with the installation. In addition to the normal installation requirements, special attention should be paid to reducing the effects of vibration, as mass flow meters operate on the basis of vibration principles, and external vibrations introduce interference. It is possible to adopt methods such as adding a fixed pier to overcome vibration interference.
(2) must be added before the filter basket chamber liquid mass flow meter installation, to avoid clogging of the flow meter tubing.
(3) When the instrument is used, the instrument should be initialized in strict accordance with the data of the factory checklist, which is also a prerequisite for ensuring accurate measurement.
(4) It is necessary to perform accurate zero calibration under the conditions of use during the use of the liquid mass flowmeter. The key point is to perform on-line calibration of the zero point. After the instrument is put into operation, it has been calibrated several times. From the result, there is a zero drift problem. Although the drift does not affect its actual accuracy, it also causes a certain measurement error.
(5 mass flowmeters have high precision and high price, which requires careful maintenance, such as high-quality regulated power supply and signal anti-magnetic measures.
(6) Prevent human power outages and disconnection. The solution is to have the lock of the instrument box, the person responsible for management; designers should consider the above issues, including such issues in the design category.
(7) It is necessary to avoid the occurrence of the use of the meter range, which will cause the measurement accuracy of the instrument to decrease, and in serious cases, the instrument will be damaged.

PREVIOUS：Analysis on the sealing problem and deviationNEXT：Which is the best way to control the quantita