Rotameter Selection Guide: How to choose the most suitable flowmeter?

1. Define application requirements
Medium characteristics:
Type: Understand the chemical properties of the medium under test, such as whether it is corrosive, whether it contains solid particles, etc.
Viscosity: High viscosity media may require specially designed flowmeters to avoid measurement errors.
Temperature: Temperature will affect the selection of flowmeter materials and measurement results, must consider the actual working temperature of the medium.
Flow range:
Determine the minimum, maximum and common flow rates for practical applications and ensure that the meter’s range covers these ranges.
Consider the range ratio, that is, the ratio of the maximum flow rate of the flowmeter to the minimum flow rate, in order to adapt to the conditions of large flow changes.

2. Accuracy and repeatability
Accuracy level: Select the appropriate flowmeter model according to the accuracy requirements of flow measurement in the process. High precision applications should choose a high precision flowmeter.
Repeatability: Understand the repeatability index of the flow meter, that is, the consistency of repeated measurement under the same flow conditions, to reflect the stability of the flow meter in long-term use.

3. Material and durability
Material selection: According to the chemical and physical properties of the medium, select the appropriate flow meter material, such as stainless steel, cast iron, PVC, glass, etc. For corrosive media, flow meters made of corrosion-resistant materials should be selected.
Durability: Consider the pressure resistance and long-term stability of the flow meter to ensure that the selected specifications can adapt to the working conditions of the application environment.

4. Installation and maintenance
Installation mode: Determine the installation mode of the flow meter (vertical or horizontal installation) according to the field pipeline layout and flow direction, and ensure that the installation requirements specified by the manufacturer are met.
Connection mode: Select the interface form that matches the pipe connection, such as flange connection, thread connection, etc., to ensure tightness and stability.
Maintenance convenience: Considering the convenience of equipment maintenance, cleaning and spare parts replacement, choose a flowmeter with simple structure and easy operation and maintenance.

5. Other factors
Response speed: For systems that change rapidly or require real-time flow monitoring, the response time of the flowmeter needs to be considered.
Certification requirements: In some industries or special applications, it may also be necessary to meet specific certification standards, such as explosion-proof certification, sanitary certification, etc.
Brands and suppliers: Select well-known brands and reputable suppliers to ensure high quality products and professional technical support.