Selection of Float Flow Meter

『Selection of Float Flow Meter』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)

1. How to choose a flowmeter

Hello, KNKE, an American imported flowmeter manufacturer, is pleased to answer your question. According to the speech made by the engineer of imported flow meters from KNKE in the United States at the 10th Instrument Exhibition, the selection method of flow meters is as follows:

1. Generally, the selection can be considered from five aspects: flow meter instrument performance, fluid characteristics, installation conditions, environmental conditions, and economic factors. The detailed factors in five aspects are as follows: a. Instrument performance: accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc; b、 In terms of fluid characteristics: temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, scaling, phase mixing, phase change, conductivity, sound velocity, thermal conductivity, specific heat capacity, isentropic index; c、 In terms of installation conditions: pipeline layout direction, flow direction, length of straight pipe sections on the upstream and downstream sides of the detection component, pipeline diameter, maintenance space, power supply, grounding, auxiliary equipment (filter type source, air purifier), installation, etc; d、 In terms of environmental conditions: temperature, humidity, electromagnetic interference, safety, explosion prevention, pipeline vibration, etc; e、 In terms of economic factors: instrument purchase cost, installation cost, operation cost, calibration cost, maintenance cost, instrument service life, spare parts, etc.

2. The steps for selecting flowmeter instruments are as follows:

1. Preliminary selection of available instrument types based o

2、 Collect data and price information for preliminary selection types to prepare conditions for in-depth analysis and comparison;

3、 Using the elimination method, gradually concentrate on 1-2 types, and repeatedly compare and analyze five factors to ultimately determine the pre selection target. The above is the answer to this question from the American imported flowmeter manufacturer, KNKE. If you have a purchasing need for flow meters, please feel free to visit the official website of KNKE in the United States for selection and procurement, or inquire with KNKEs professional technical personnel to find the most suitable product for you.

2. What are the characteristics of a float flowmeter? Float flowmeter is used for small diameters and low flow rates. Commonly used instruments have a diameter of 40-50mm or less, with a minimum diameter of 1.5-4mm. They are suitable for measuring low flow rates and small flow rates. Taking liquids as an example, the nominal diameter of a glass tube float flowmeter with a diameter of 10mm or less for full flow blind spots is only between 0.2-0.6m/s, or even below 0.1m/s; The Jin Nian Huan tube float flowmeter and glass tube float flowmeter with a diameter greater than 15mm are slightly higher, with a flow rate between 0.5-1.5m/s. Float flow meters can be used for lower Reynolds numbers, using floats with viscosity insensitive shapes. As long as the Reynolds number at the flow annulus is greater than 40 or 500, the flow coefficient remains constant when the Reynolds number changes, meaning that changes in fluid viscosity do not affect the flow coefficient. This value is fa

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