Basic requirements for flowmeter selection

Project Overview

Flowmeter selection communication needs to know the parameters in advance: the measurement medium, pipe diameter, operating temperature, operating pressure, flow range; later need to determine: accuracy requirements, power supply, connection, instrument material, protection level, whether explosion-proof, individual site needs to understand the viscosity of the medium; magnetic inductive flowmeter in addition to the above parameters, but also need to implement the clear lining material, electrode material. The following is a detailed analysis of the basic requirements for flowmeter selection:

1.Measurement accuracy

Measurement accuracy is the primary consideration in flowmeter selection. Users should be based on the actual needs, choose the appropriate accuracy level of the flowmeter. For the requirements of high-precision measurement occasions, should choose high-level flowmeter, such as mass flowmeter or ultrasonic flowmeter.

2.Fluid properties

Fluid characteristics include the type of fluid (liquid, gas or vapour), density, viscosity, pressure, temperature and the presence of impurities or corrosive substances. These factors will directly affect the choice of flowmeter. For example, for high-viscosity fluids, should choose the flowmeter suitable for measuring high-viscosity fluids, such as rotor flowmeter or elliptical gear flowmeter.

3.Environmental factor

Environmental factors include temperature, humidity, vibration, and electromagnetic interference. These factors may have an impact on the performance and stability of the flowmeter. Therefore, in the selection process, need to consider the impact of environmental factors on the flowmeter, and choose a better environmental adaptability of the flowmeter.

4.Installation conditions

Installation conditions include the installation location of the flowmeter, installation direction, installation space and whether there is enough straight pipe section. These factors will affect the measurement effect and stability of the flowmeter. For example, for vortex flowmeter, need to ensure that the installation location has enough straight pipe section, in order to reduce the interference generated by the vortex.

5.Flow range

Flow range refers to the flow meter can measure the zui small flow and zui large flow. When selecting a model, you need to make sure that the flow range of the selected flowmeter matches the flow range in the actual application scenario. If the flow range does not match, it may lead to inaccurate measurement or damage to the flowmeter.

6.Economics

Economy is one of the important factors to be considered in the flowmeter selection process. Users should choose a cost-effective flowmeter based on their budget and long-term operating costs. At the same time, the life cycle cost of the flowmeter should also be considered, including purchase cost, maintenance cost and replacement cost.

7.Dependability

Reliability refers to the ability of the flowmeter to maintain stable performance over a long period of time. When selecting, should choose the flowmeter brand with good reputation and long-term stable operation experience. In addition, also need to consider the flowmeter warranty period and after-sales service and other factors.

8.Post Maintenance

Post-maintenance is a part of the flowmeter selection process that cannot be ignored. Users should choose easy to maintain the flowmeter, in order to facilitate in the event of failure can be quickly repaired. At the same time, also need to consider the flowmeter's replaceability and the cost of spare parts and other factors.

In summary, the basic requirements of flowmeter selection involves a number of aspects, including measurement accuracy, fluid characteristics, environmental factors, installation conditions, flow range, economy, reliability and maintenance. In the actual selection process, users need to consider these factors, and choose the type of flowmeter suitable for their needs and models.