BADGER flowmeter 8401510-0022 from the United States

BADGER flowmeterDue to the fact that orifice flow meters rely on differential pressure signals before and after the orifice plate to achieve flow measurement, pulsating flow can cause inaccurate differential pressure before and after the orifice plate. Therefore, orifice flow meters are not suitable for measuring pulsating flow, while ultrasonic flow meters can measure the intensity of pulsating flow and eliminate its interference, making them suitable for measuring pulsating flow. Flow meters are not suitable for measuring wet gases; If the measured gas is a wet gas, it is easy for liquid to accumulate at the front end of the orifice flowmeter, causing changes in the upstream and downstream differential pressure. The BADGER flowmeter measures the flow rate based on the upstream and downstream pressure difference, and if the differential pressure changes, the orifice flowmeter cannot accurately measure the gas flow rate. Ultrasonic flow meters have a self detection function. If the measured gas is a wet gas and affects the ultrasonic flow meter, the BADGER flow meter itself can be corrected. Therefore, ultrasonic flow meters are suitable for measuring wet gases (with a wet gas volume component content of less than 5%).

BADGER flowmeterDue to the limitations of structural principles, it is required that the flow velocity distribution be uniform during measurement. However, due to the complexity of on-site measuring pipelines, the flow velocity distribution of gas in the pipeline cannot be uniformly symmetrical. Therefore, orifice flowmeters are sensitive to asymmetric flow velocity distribution. Ultrasonic flow meters can correct the phenomenon of asymmetric flow velocity distribution. The principle of flow meters determines that their on-site usage conditions must be consistent with the design conditions, and their adaptability to pressure and flow is poor. Ultrasonic flow meters have strong adaptability to the field, while BADGER flow meters are insensitive to pressure and flow fluctuations and have strong overload capacity. The use of gas ultrasonic flow meters has significant advantages over orifice flow meters in terms of safety performance, technical performance, one-time investment, and operating costs. Due to the need to explain the problem, it is generally advantageous to choose gas ultrasonic flow meters for flow meters with a diameter of DN200 or above through comparative calculations. For flow meters with a diameter of DN150 or below, using orifice flow meters is more economical due to the price factor of gas ultrasonic flow meters. However, BADGER flow meters also choose more accurate measuring instruments to ensure measurement accuracy.

BADGER flowmeterAfter installation on the pressure reducing valve, the wet saturated steam suddenly decreases significantly, causing adiabatic expansion of the fluid, partial evaporation of water droplets, and absorption of vaporization heat from the liquid and vapor phases, resulting in a decrease in the temperature of the vapor-liquid phase. If the temperature does not decrease much or the humidity before evaporation is high, the temperature will rapidly decrease to the saturation temperature corresponding to the new pressure, establishing a new equilibrium. At this point, the steam is still saturated steam. If the pressure decreases significantly or the humidity before evaporation is low, the BADGER flowmeter will still have a temperature lower than the saturation temperature corresponding to the new pressure due to the evaporation of water droplets. If the flowmeter can only be installed behind the pressure reducing valve, an additional pressure transmitter can be installed for temperature and pressure compensation.
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BADGER flowmeter 8401510-0022 from the United States
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