"Our preliminary assessment indicates that a combination of factors, including a faulty oxygen flowmeter, systemic failures and human error " contributed to the deaths, Riordan's statement said.
32.
When a driving pressure is applied to the inlet of a Thorpe tube flowmeter, the ball rises in the tapered tube until the flow rate creates an applied pressure on the ball equal to its weight.
33.
Although a similar device named a " pulsed ultrasound flowmeter " was designed by the Dean Franklin group at the University of Washington, Seattle, USA, its sensor had to be directly attached to the blood vessel wall.
34.
A safety feature on the oxygen flowmeter was missing, allowing it to be connected to the nitrous oxide outlet, Dr . Charles Riordan, the vice president for medical affairs at St . Raphael, said in a statement.
35.
Fig . 3 : Principle sketch of Lorentz force velocimetry : arrangement of the coil ( a ) and structure of the primary magnetic field ( b ) for a longitudinal flux flowmeter . ( c, d ) Same for a transverse flux flowmeter.
36.
Fig . 3 : Principle sketch of Lorentz force velocimetry : arrangement of the coil ( a ) and structure of the primary magnetic field ( b ) for a longitudinal flux flowmeter . ( c, d ) Same for a transverse flux flowmeter.
37.
The accidents occurred at the Hospital of St . Raphael when an oxygen flowmeter, a device used to regulate the amount of oxygen a patient receives, was incorrectly connected to an outlet providing nitrous oxide, a common anesthetic that is lethal in extreme doses.
38.
Accordingly, more error is expected in estimating the average velocity by assuming a Manning's " n ", than by direct sampling ( i . e ., with a current flowmeter ), or measuring it across weirs, flumes or orifices.
39.
The first devices used in dentistry to administer the gas, known as Nitrous Oxide inhalers, were designed in a very simple way with the gas stored and breathed through a breathing bag made of rubber cloth, without a scavenger system and flowmeter, and with no addition of oxygen / air.
40.
The turbine flowmeter is most useful when measuring clean, steady, high-speed flow of ultrasonic flowmeters, especially in the larger line sizes, and it also has a favourable price compared to the prices of DP flowmeters, especially in cases where one turbine meter can replace several DP meters.
