The difference between pitotbar flow meter and Del Taba flowmeter
Pitotbar flow meter is the Tsinghua University patented product, is the product of the national development and Reform Commission recommended only flowmeter, is through the instrument Chinese domestic Certification Institute of metrology of the most advanced measurement of fluid flow, but also the world's most advanced (currently only Chinese, Germany, the United States has the technology flow meter).
Use process accuracy to maintain* pitotbar flow meter unique structure is not affected by wear, impurities and oil, it has no moving parts, no body structure to avoid the signal leakage between high and low pressure chamber. So pitotbar flow meter during operation can maintain high accuracy.* Del Taba meter is used for a long time, once a set of holes blocked, the accuracy will drop rapidly, the need for regular inspection and cleaning.
calibration* pitotbar flow meter is currently the only one possible meter wind tunnel calibration by Taiwan full range before the factory, but also domestic and international only a kind of wind, smoke, water, steam, oil (gas) any fluid to achieve accurate measurement of the universal meter. Accuracy class 0.2.Del. The structure itself determines the calibration and detection can not be achieved by taiwan.
Fluid conditions are differentBy measuring pitotbar flow meter is suitable for any pipeline fluid fluid; single phase flow, bidirectional flow can be measured; low requirements for straight pipe; in effect measuring medium on impurities, easy to block.* Del the medium must be filled with fluid pipeline; must be single-phase flow, two-way flow (such as gas mixture flow) cannot be measured.
Different measurement principle* pitotbar flow meter is composed of a pressure hole, the pitot principle extraction fluid velocity (total pressure and static pressure =) and then converted into differential pressure flowmeter fluid volume flow and mass flow.* Del Taba meter is composed of many pressure hole, the pipeline is not measured at different points of the differential pressure, finally calculated through an average differential pressure transmitter, and then converted into velocity, flow calculation.
