Flow meter conversion

『Flow meter conversion』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

Do you know how flow meters are converted into units? The commonly used unit for flow meters is m3/h, which can be divided into instantaneous flow rate (Flow Rate) and total flow rate (Total Flow). Instantaneous flow rate refers to the amount of effective cross-section that passes through a closed pipeline or open channel per unit time. The substances flowing through can be gases, liquids, or solids; Accumulated flow rate refers to the cumulative amount of fluid flowing through the effective cross-section of a closed pipeline or open channel during a certain time interval (one day, one week, one month, one year). The cumulative flow can also be obtained by integrating the instantaneous flow rate with time, so the instantaneous flow meter and the cumulative flow meter can also be converted into each other. The development trend of flow meters is that in industrial fields, instruments that measure the flow rate of a fluid are collectively referred to as flow meters or flow meters. It is one of the most important instruments in industrial measurement. With the development of industry, the accuracy and range requirements for flow measurement are becoming increasingly high. In order to adapt to various applications, various types of flow meters have been introduced and widely used in industries such as oil and gas, petrochemicals, water treatment, food and beverage, pharmaceuticals, energy, metallurgy, pulp and paper, and building materials.

2. Method for converting electromagnetic flowmeter flow to current value

The core method for converting electromagnetic flowmeter flow to current value is the linear conversion formula: current value=4+0.16 × (Q-Qmin).

2. Calculate the proportionality coefficient k and establish the conversion relationship between flow rate and current through the proportionality coefficient k: k=16/(Qmax - Qmin). For the range of 0-100m ³/h, calculate k=0.16mA/(m ³/h)

3. Substitute the formula to calculate the current value. The actual flow rate Q corresponds to the current I formula: I=4+k × (Q - Qmin). Taking 50m ³/h as an example, after substitution: I=4+0.16 × (50-0)=12mA. Conversion logic verification: When Q=Qmin, the current maintains a reference of 4mA; When Wang Shang Q=Qmax, the current reaches the upper limit of 20mA, and the entire blocking process satisfies a linear mapping relationship. Different ranges only require adjusting the ratio of the number of sweet potatoes to the k value.

3. How to calculate the unit of flow meter? Hello, KNKE, a manufacturer of imported flow field meters from the United States, is pleased to answer your question. The gas mass flow unit of the KNKE imported orifice flowmeter from the United States is generally expressed in sccm (Standard Cubic Centimeter per Minute) and slm (Standard Liter per Minute). This means that under different usage conditions, the flow indicated by this instrument is the standard flow rate. The standard state is as follows: air pressure -101325Pa (760mm Hg); Temperature -0 ℃ (273.15K). This is an important difference between this instrument and other flow meters, and it is also where SCCM and SLM differ from mL

『SILVER Official Website SERVICE』