属于均速管流量计的一种，是一种插入式流量测量仪表，即在管道中插入一根德尔塔巴传感器，当流体流过传感器时，在其前部迎流方向产生一个高压分布区，在其后部产生一个低压分布区。 Delta Taba flowmeter belongs to a type of averaging tube flow meter. It is a plug-in flow measuring instrument, that is, a Delta Taba sensor is inserted into the pipe. When the fluid flows through the sensor, it flows in the front direction of the sensor. A high-pressure distribution area is created, and a low-pressure distribution area is created at the rear. Delta Taba flowmeters are widely used: they can be used to measure dry gas, humid gas, liquid or vapor media without being limited by dielectric constant.
是通过差压原理测量流量的装置，是在皮托管流速测量原理的基础上发展起来的。 The Delta Taba flowmeter is a device for measuring flow rate based on the differential pressure principle. It is developed on the basis of the pitot tube flow rate measurement principle. Measures the flow of fluids such as liquids, gases and steam. Because there are no moving parts, there is almost no pressure loss, convenient installation and maintenance, and extremely low operating costs, which is favored by users. The Delta Tab flow sensor is composed of a detection rod, a pressure taking port and a guide rod. It crosses the interior of the pipeline and is perpendicular to the tube axis. There are multiple pressure measurement holes on the upstream surface of the measurement rod to measure the average total pressure. The back and side flow surfaces are provided with static pressure measuring holes, which are respectively led out by the total pressure impulse pipe and the static pressure impulse pipe, and the flow rate through the pipeline is calculated according to the differential pressure value of the total pressure and the static pressure. The static pressure on the backflow surface of the sensor can also be replaced by the static pressure on the wall of the flow tube. Delta Barrel Speed Transmitter Flow Transmitter is a flow meter composed of sensors, plenum accessories and differential pressure transmitters, pressure transmitters, flow totalizers and other supporting components. Delta bar averaging tube flow sensors are equipped with differential pressure transmitters, pressure transmitters, temperature transmitters and flow totalizers to form various types of flow measurement systems.
是检测杆、取压口组成，它横穿管道内部与管轴垂直，在检测杆迎流面上设有多个总压检测孔，在检测杆背流面上设有多个静压检测孔，分别由总压导压管和静压导压管引出，根据总压与静压的差压值，计算流经管道流量。 The Delta Taba flowmeter is composed of a detection rod and a pressure taking port. It crosses the interior of the pipe and is perpendicular to the tube axis. There are multiple total pressure detection holes on the upstream side of the detection rod. Each static pressure detection hole is led out by the total pressure impulse pipe and the static pressure impulse pipe respectively, and the flow rate through the pipeline is calculated according to the differential pressure value of the total pressure and the static pressure. Theoretical basis Delta Taba flowmeter is developed based on the principle of pitot tube speed measurement. It determines the flow rate by the product of the average velocity of the pipeline and the effective cross-sectional area of the pipeline. Probe cross-sectional shape: Verabar is a bullet head shape, Delta Taba is a diamond-like shape, and the diamond-like shape is cut to make the boundary between the high and low areas more obvious. The position of the pressure hole of the probe rod: the full pressure hole of Verabar is at the front end of the rod, and the static pressure holes are at the two side walls of the rod; End, measure back pressure (negative pressure). Therefore, under the same pipe diameter and flow rate conditions, the differential pressure produced by the Delta Tab probe is larger than that of the Verabar probe, about 20% -40% larger. This is a significant advantage of the Delta Taba flowmeter.