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Environmental Requirements for Liquid Flowmeters - Focus on Microfluidic Control Technology

In general, the principle when choosing a liquid flowmeter is to understand the knowledge of various flowmeters' structural principles and fluid properties. In the process of selecting the flowmeter, the ambient conditions and related changes should not be ignored, such as ambient temperature. , humidity, safety, and electrical interference.

Liquid flowmeter environmental requirements:

1 Ambient temperature: Changes in the ambient temperature affect the electronic part of the flowmeter and the flow sensor part. For example, temperature changes can affect the size of the sensor, change the fluid density and viscosity through heat transfer through the flow meter housing. When the ambient temperature affects the display meter electronics, the component parameters will be changed.

2 Ambient humidity: The atmospheric humidity in the environment is also one of the problems that affect the use of the flowmeter. For example, high humidity can accelerate atmospheric corrosion and electrolytic corrosion and reduce electrical insulation. Low humidity can cause static electricity. Sharp changes in ambient temperature or medium temperature can cause humidity problems, such as surface condensation.

3 Safety: The flow meter should be selected in accordance with the relevant specifications and standards to adapt to the explosive hazardous environment, and the requirements of the site should be met in accordance with the explosion-proof standards.

For liquid flow meters, electromagnetic interference occurs on power cables, motors, and electrical switches. If no measures are taken, it will become a cause of flow measurement error. The flow sensor and the secondary display instrument should be installed in different places, like the secondary display instrument should be installed in the control room to ensure that the electronic components are not affected by temperature.

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