Differential pressure mass flow meters have many significant advantages. First, they have high measurement accuracy. They can accurately measure the mass flow rate of various fluids, with errors usually within a very small range. This is crucial for industrial production processes that require strict flow control. Second, differential pressure mass flow meters have good stability and reliability. They are not affected by factors such as fluid temperature, pressure, and density, and can operate stably for a long time in harsh working environments. In addition, differential pressure mass flow meters have a wide range of applications. They can measure the flow rate of various liquids, gases, and steam, and can accurately measure both low and high flow rates.
Calibration
Calibration is crucial for ensuring the accuracy of gas flow meters. A reasonable schedule should be established based on the frequency of use and accuracy requirements. For flow meters used in trade settlements with high accuracy requirements, calibration should be performed every six months or once a year; for general industrial flow meters, the cycle can be extended appropriately. During calibration, ensure stable environmental conditions and consider gas properties. Methods such as sonic nozzle method and servo-type standard flow meter comparison method can be used. After calibration, record the date, conditions, results, and adjustment details to generate a report. If the error exceeds the allowable range, adjustments or repairs are needed.
Cleaning
Regular cleaning maintains flow meter performance. The external surface should be wiped with a clean, damp cloth weekly or monthly to remove dust and dirt; if allowed, the sensor part can be cleaned with special tools or mild detergents. Thermal sensors can be cleaned by blowing away dust and impurities with compressed air. Avoid using corrosive or abrasive cleaners to prevent damage to the sensor.
Troubleshooting
Common malfunctions and troubleshooting methods vary. If there is no flow in the pipeline or the flow is below the starting flow, confirm the gas flow, check the wiring, clean the dirt, replace the magnetic sensor, etc.; if the flow meter selection is incorrect, re-select a flow meter with a suitable flow range; if there is water accumulation in the flow meter, drain the water; frequent water accumulation may require vertical installation; if the flow rate is too high and exceeds the range, adjust the flow rate. In addition, check whether the grounding, power supply, and signal acquisition coil are normal, and handle the corresponding faults in a timely manner.
By performing calibration, cleaning, and troubleshooting, the accuracy and reliability of the gas flow meter can be effectively ensured, providing reliable data support for production and experiments.
Contact Information
Address: Room 1522/23, Building B, Ruichuang International Center, No. 8 Wangjingdong Road, Chaoyang District, Beijing (R&D Department)
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