The HUALIU gas turbine flowmeter is a new-generation high-accuracy, high-reliability precision gas metering instrument that integrates temperature, pressure and flow sensors together with a smart flow totalizer. Developed on the basis of fluid mechanics, electromagnetics and other theories, the product offers excellent low- and high-pressure metering performance, multiple signal-output modes and low sensitivity to flow disturbances, and is widely used for the metering of natural gas, coal-derived gas, liquefied gas, hydrocarbon gases and similar media. The product is manufactured and verified in strict accordance with the JJG 1037-2008 verification regulation for turbine flowmeters and the GB/T 21391-2008 national standard for the measurement of natural gas by gas turbine flowmeters.

Its measuring principle is as follows: after the gas enters the flowmeter, it is conditioned and accelerated by an integrated flow straightener at the inlet; the turbine blades develop a driving torque under the action of the fluid and rotate with the flow, and within a certain flow range the turbine's angular velocity is proportional to the volumetric flow. A magnetic sensor, based on the principle of electromagnetic induction, produces a pulse signal proportional to the volumetric flow, which after amplification, filtering and shaping is fed together with the temperature and pressure sensor signals into the smart totalizing unit for processing. Built-in temperature and pressure sensors automatically track and compensate the flow, displaying in real time the totalized gas volume under standard conditions (Pb=101.325kPa, Tb=293.15K) and performing standard-condition conversion, making it an ideal choice for custody-transfer metering of natural gas and other gases.

The meter uses a high-quality aluminum-alloy turbine with good flow stability and corrosion resistance, imported dedicated bearings for a long service life, and a metering chamber isolated from the vented chamber for high safety. The integrated meter-core design gives a sound structure with excellent durability and repeatability and easy installation. The complete unit adopts new micro-power technology with power consumption ≤1W, and can be powered long-term by a built-in lithium battery or run from an external supply. The display head rotates 350° for easy on-site reading. The explosion-proof rating is ExdIICT6 and the ingress protection is IP65, balancing metering accuracy with safe, reliable on-site operation.