Daood Syed S, Ijaz Aamir, Butt Muhammad A
School of Process, Environmental and Materials Engineering, University of Leeds, LS2 9JT, Leeds, U.K..
Institute of Chemical Engineering and Technology, University of the Punjab, Quaid-e-Azam Campus, Lahore (54590), Pakistan.
Sensors (Basel). 2007 Nov 20;7(11):2835-2845. doi: 10.3390/s7112835.
This paper presents comparative study of a new type of manometer calledconcentric tube bulb (C.T.B) manometer. Its performance of measuring differential heightis studied against conventional U-shaped manometer. Pressure drops and mass flow ratesare calculated by taking various systems comprising of different flow measuring devicessuch as orifice and venturimeters using both U- shaped and C.T.B manometers.Comparison between the physically measured values of differential pressure drops andmass flow rates with the calculated values based on theoretical equations is also made.Experiments are carried out using mercury and CCl4 in these manometers as sensing fluids.Water is used as flowing fluid for mass flow rate and pressure drop measurements, whereasin gauge pressure measurements air is used.
本文介绍了一种名为同心管球（C.T.B）压力计的新型压力计的对比研究。针对传统U型压力计，研究了其测量压差高度的性能。通过使用U型和C.T.B压力计，对由不同流量测量装置（如孔板和文丘里管）组成的各种系统，计算压力降和质量流量。还对压差和质量流量的物理测量值与基于理论方程的计算值进行了比较。在这些压力计中使用汞和四氯化碳作为传感流体进行实验。水用作质量流量和压力降测量的流动流体，而在表压测量中使用空气。
