Pressure transducers along the pipeline, together with the flowmeters are required to establish where the pressure gradient has deviated from that predicted from the basic equations of fluid flow.
This deterioration in the signal quality limits the lower operating range of the flowmeter with differential pressure sensor.
We modeled the heated fiber flowmeter to acquire the temperature fields at various flow velocities by using the finite element modeling (FEM) method, and calibrated the flowmeter with a Standard Bell Prover.
The field test results indicated that, with a proper calibration, the flowmeter measurement is capable of characterizing the vertical distribution of preferential flow or hydraulic conductivity.
When the problem with the oxygen flowmeter was identified, it was fixed, and all other flowmeters in the hospital were checked and found to be in good working order, Dr. Riordan said.
Ischemic injury was reproduced by cross-clamping the infrarenal aorta for either 22 or 30 min. Direct aortic blood flow measurements were taken with the transonic flowmeter before and after cross-clamping.
When the flowmeter is used with a diverter, the range of measured flow velocity can be extended, but the measurement error and the coefficient of variation due to friction increase significantly.
Based on ambient conditions on the experimental days the gas analyser and the flowmeter were calibrated with high precision gases.
Using analytic models, the flowmeter sensitivity is computed both with magnetic and non-magnetic pipes connected.
