Plug-thermal gas mass flow meter HGF-3000 series of thermal gas mass flow meter is the use of the principle of thermal conductivity measurement of gas mass flow meter. The instrument's sensor consists of two benchmark grade thermal resistance (platinum RTD) components. One is the mass velocity sensor T1, a temperature change is measured gas temperature sensor T2. When these two RTD into gas to be measured, wherein the sensor T1 is heated to a constant temperature difference between the gas temperature or above, another sensor for sensing measured gas temperature T2. With increasing gas mass flow rate, air flow away more heat, the temperature sensors T1 decrease to maintain T1, T2 constant temperature difference, T1 heating power would increase. According to the law of thermal effects Kim, heating power P, the temperature difference △ T (T1-T2) and the mass flow rate Q has a definite mathematical relationship. P / △ T = K1 + K2 f (Q) K3 K1, K2, K3 is a constant related to the physical properties of the gas. ◆ Applications ◆ Features ● oxygen, nitrogen, hydrogen, chlorine and multi-component gas measurement. ● measuring gas mass flow, without temperature and pressure compensation. ● blast furnace gas, coke oven gas measurements. ● range ratio, measuring the flow rate range: 0.1Nm / s ~ 120Nm / s. ● flue gas measurement. ● No pressure loss for a known cross-sectional area of ??any shape pipe. ● methane, water treatment aeration and chlorine measurement. ● corrosion sensors, suitable for measuring corrosive gases. ● compressed air measurements. ● Plug-in sensors can be installed and maintained online. ● Experts gas flow measurement ● full scale segment of natural gas, liquefied petroleum gas, flare gas, and other algorithms to ensure the accuracy of the measurement. Suitable for trade settlement or plant blast furnace gas leak ● primary air, secondary air flow measurement ● the mine ventilation or exhaust system consisting of flow measurement ◆ meter measuring system consists of transmitters and sensors. Two structural types to choose from: ● Integrated type: transmitter and sensor together as a unit. ● sub-body: the transmitter and the sensor is a separate installation.