Current position > Product detail
『Small flow gas mass flowmeter』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)
1. What is the minimum flow rate of a mass flowmeter that cannot be less than?
There is no fixed and unified standard for the minimum flow rate of a mass flowmeter, and it needs to be determined based on the specific product type, brand, and model. 1. Example of minimum flow rate for non defective products: The Dutch Bronkhorst gas mass flowmeter ES-103i has a minimum flow rate (controller) of 2 milliliters per minute, which is suitable for gas measurement and control scenarios with medium precision requirements. The quality flow meter of domestic manufacturer Yidu is designed based on the principle of laminar pressure difference. Its standard product has a minimum measurement and control range of 0.5 sccm (0.5 ml/min under standard conditions). According to the conventional range ratio of 100:1, the actual measurable range can be as low as 5 microliters/minute to 500 microliters/minute. 2. The conventional application range of gas mass flow meters. This type of flow meter is mainly targeted at small and micro flow gas scenarios, with a flow coverage range from 0.000001 m ³/hour to 300 m ³/hour, corresponding to pipe diameter specifications ranging from 3mm to 65mm. In practical applications, there is a direct correspondence between the physical structure of the flow meter (such as the diameter of the punching hole) and the flow range. 3. The core principles of equipment selection should be clarified by users first. Based on the minimum flow demand in actual operating conditions, select product models with lower range limits than this value. If the measured flow rate is close to the lower limit of the equipment range for a long time, it will lead to a decrease in measurement accuracy. It is necessary to instal
2. How to choose a suitable gas mass flowmeter
Choosing a suitable gas mass flowmeter requires consideration of actual needs and comprehensive factors. The following is a specific selection guide
1. Clarify the measurement range. The measurement range of a gas mass flowmeter is usually 0.1 to 1000 Nm3/h, and the model that matches the coverage range should be selected according to the actual flow requirements.
. If the flow rate fluctuates greatly, it is necessary to ensure that the upper and lower limits of the flowmeter can cover the maximum and minimum flow rates to avoid overload or insufficient measurement. For example, in chemical production, if the gas flow rate is between 50-500Nm3/h, a flow meter with a range that includes this range should be selected. Understanding the physical and chemical properties of the gas (such as density, temperature, pressure, corrosiveness) directly affects the selection and measurement results of the flow meter. Gas type: Different gases have different adaptability to flow meters. For example, Coriolis mass flow meters can handle a variety of gases, while thermal flow meters perform better in low flow measurements. Temperature and pressure: For high temperature or high pressure gases, a pressure and temperature resistant model should be selected, such as ultrasonic flow meters suitable for high temperature and high pressure environments. Corrosivity: If the gas is corrosive, a flow meter made of stainless steel or anti-corrosion coating material should be selected. Accuracy requirements: Choose the appropriate accuracy level according to the application scen