The HUALIU digital target flowmeter is a force-sensing flowmeter developed on the basis of the traditional target flowmeter measuring principle, combined with new capacitive force sensor technology and modern digital technology. It combines the no-moving-parts feature of target, orifice and vortex flowmeters with a measurement accuracy comparable to that of positive displacement flowmeters. With its unique anti-interference and anti-impurity performance, it is lightweight and reliable, and is widely used in the petroleum, chemical, energy, food, environmental protection, water conservancy and other fields.

Its working principle is as follows: when the medium flows in the measuring tube, it passes a flow-blocking element (target plate) that generates a differential pressure and exerts a force on the target plate, the magnitude of the force being proportional to the square of the medium velocity. This force is transmitted through a rigidly connected transmission element (measuring rod) to the capacitive force sensor, where it is converted into a voltage signal that, after preamplification, A/D conversion and digital processing, yields the corresponding instantaneous flow and cumulative total. The sensor does not contact the measured medium directly, has no worn parts, and is safe and reliable in use.

The complete instrument has a rugged structure with no moving parts, adopts an insertion structure for easy removal, and can be made of various corrosion-resistant and high/low-temperature-resistant materials such as Hastelloy and titanium; its fully sealed welded structure can withstand a high pressure of 42MPa. The product offers integrated temperature and pressure compensation, directly outputs mass or standard-condition flow, and supports low-signal cutoff, non-linear correction and adjustable filter time. With low pressure loss and strong anti-vibration performance, it can measure the flow of gas, liquid and steam under normal-temperature, high-temperature and low-temperature conditions, and is especially suitable for the reliable metering of high-viscosity and impurity-laden media.