Trace gas flowmeter | Trace gas flowmeter? Which model brand has good quality and durability?

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How to use the trace oxygen analyzer purchased by Shanghai Kuosi? On the front panel of the instrument, there are power selection switches, wide range selection switches, power indicator lights, charging indicator lights, calibration knobs, LCD screens, gas flow meters, four-way valves, and other components. Power selection switch: OFF Power off? DC ? Internal rechargeable battery working mode AC? AC power supply working mode CHAR. Charging mode range selection switch:%? Measure the oxygen content at the% level (some instruments cannot use this gear). Power indicator light: When the instrument is connected to a 220V power supply, the indicator light will light up. Calibration knob: Used when calibrating the instrument. After calibration, use a lock to lock it. Generally, calibration is completed once every three months. LCD screen: displays the current oxygen content. Flow meter: current gas flow rate. When measuring, it is generally controlled between 500ml-800ml/min, and during blowing, the air flow rate can be higher. Four way valve: When placed in the blowing position, the sample gas flows through the bypass while blowing out the air inside the pipeline clean and tidy. When placed at the injection position, the sample gas flows through the sensor for measurement. When the instrument is not in operation, the four-way valve should be brought to the purge position to prevent air from entering the sensor and seriously consuming it. There are components such as power supply, air inlet, and air outlet on the back panel of the instrument. Power supply: 220V ± 10% AC power supply Import: F3 standard connector, sealed with rubber ring or metal sleeve. For example, if the mouth is sealed with F3 standard connector, sealed with rubber ring or metal sleeve,

2. Analysis: What flow meter is better for measuring oxygen?

V-cone flow meter is a better choice for measuring oxygen. The following is a detailed analysis: The principle and characteristics of V-cone flowmeter. V-cone flowmeter belongs to differential pressure flowmeter, and its core principle is to place a V-shaped cone in the pipeline to cause local contraction when the fluid flows through, thereby forming a pressure difference before and after the cone. The pressure difference is proportional to the square of the fluid velocity, and the flow rate can be calculated by measuring the differential pressure value. Its characteristics include: wide adaptability to media: suitable for almost all liquid and gas media, including industrial gases such as oxygen. Simple and reliable structure: no moving parts, high stability for long-term use, low maintenance cost. Accuracy and stability: The measurement accuracy is high and less affected by the flow field distribution, making it suitable for complex working conditions. Customized support: Selection and ordering can be made based on on-site requirements such as pipeline size, pressure rating, temperature range, etc. Figure: Installation diagram of V-cone flowmeter in pipeline. Special requirements for oxygen measurement and adaptability of V-cone flowmeter. Oxygen, as a strong oxidizing gas, needs to be focused on the following issues during the measurement process. V-cone flowmeter can effectively meet these requirements: degreasing treatment: Oxygen in contact with grease may cause combustion or explosion, so the flowmeter needs to undergo strict degreasing treatment. The material (such as stainless steel) and surface treatment

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