HPA00505Y

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The HPA00505Y is a variable area flowmeter used to measure the rate of liquid or gas flow. It is designed with a conically shaped body and a tapered orifice inserted in the body. A float with calibrations is attached to the measuring tape. The movement of the float is measured by a pressure sensing tube connected to the float. The pressure sensing tube reads the pressure at the bottom of the tapered orifice, which is proportional to the area of the orifice.

The measuring range of the HPA00505Y is the volumetric flow rate, from 0.4–12 L/min to 0.5–25 L/min respectively. It is designed with an accuracy of ± 1.5%. The measuring range can be extended if two or more HPA00505 devices are connected in series. Its operating pressure range covers from 0.14~3.0Mpa depending on the orifice diameter.

The HPA00505Y is suitable for measuring a wide variety of fluid viscosities, such as liquids, gases and steam. It can also be used to measure the flow rate of corrosive and flammable fluids, as it is made from durable material. Furthermore, the HPA00505Y has a wide temperature range of -10°C to + 120°C.

The working principle of the HPA00505Y involves the acceleration of the media through the orifice. The pressure of the flowing media is sensed at the bottom of the orifice by the pressure sensing tube. This pressure is proportional to the area of the orifice where the media has passed through, and is inversely proportional to the square root of the volumetric flow rate. The orifice is designed such that when the flow rate changes, the pressure sensed corresponds to the volumetric flow rate of the medium.

The movement of the float is transmitted to the pressure sensing tube so that the differential pressure changes can be measured. The float design is calibrated such that it can accurately measure the volumetric flow rate with ±1.5% accuracy. The pressure sensing tube reads the differential pressure at the bottom of the orifice and transmits it to the signal conversion unit. The signal conversion unit converts the pressure signal to a 4–20 mA analog signal according to a linear relationship.

The HPA00505Y is mainly used in measurement and control of fluid flow, primarily in industries such as petrochemical, water treatment, chemical, food and beverage, pulp and paper, pharmaceutical and power generation. It is widely used for flow control and measurement in pipeline systems, such as flow check, flow monitoring, flow regulation, and pump control. In addition, it can be used for other applications such as air venting and loading/unloading control of tank farms.

In conclusion, the HPA00505Y is a highly accurate and reliable flowmeter with a wide range of applications. It offers a wide temperature range and is suitable for measuring a variety of fluids, including corrosive and flammable fluids. The device is designed with a conically shaped body, a tapered orifice, and a pressure sensing tube which are used to measure the differential pressure of the fluid and convert it to an analog signal.

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