Bellows pump

Vapor Pressure. The Shiley Infusaid implantable infusion pump utilizes energy stored in a two-phase fluorinated hydrocarbon fluid. The pump consists of a refillable chamber that holds the dmg and a chamber that holds the fluid. The equiUbrium vapor pressure of the fluid, a constant 60 kPa (450 mm Hg), compresses the bellows, pumping the dmg through a bacterial filter, a capillary flow restrictor, and an infusion cannula to the target body site (56,116). 

List three examples of the four components, e.g., a metal bellows pump. 

In addition, an interesting phenomenon was observed when pumping the sample gas through the sampling probe. The chamber air is pulled through the screens and filter, and through a dry test meter with a Metal Bellows pump. When pump is on, a steadily increasing number of detectable condensation nuclei is found. 

Gas Samples for Subsequent Laboratory Analysis. Collection of air samples for later analysis in the laboratory is a common technique used for aircraft sampling. Whole air sampling for stable compounds (CO, CO , ha-locarbons, and low-molecular-weight hydrocarbons) is usually accomplished by filling a container to a pressure of about 2 atm (203 kPa) with a metal bellows pump. Alternatively, containers may be evacuated in the laboratory to a low pressure and filled during flight by simply opening a valve at the appropriate time. Containers are typically constructed of stainless steel that has been electropolished or treated in some way to reduce surface activity... 

Measurement with the Infrared Analyzer. The infrared analyzer was operated in the absorbance mode at 8.02 ym with a slit width of 1 mm, path length of 5.25 m, and response time of 1s. A closed recirculating loop containing a metal-bellows pump, a glass tee, and the infrared analyzer was assembled using low-volume tubing the total volume of the system was 5.64 L. 

Closed circulation maintained in system via a metal bellows pump... 

Figure 5.7 Three-dimensional drawing of the experimental system used to assess the catalytic properties of the amorphous iron silicate smokes. The (smoke) catalyst is contained in the bottom of a quartz finger (attached to a 2L Pyrex bulb) that can be heated to a controlled temperature. A Pyrex tube brings reactive gas to the bottom of the finger. The gas then passes through the catalyst into the upper reservoir of the bulb and flows through a copper tube at room temperature to a glass-walled observation cell (with ZnSe windows) in an P iiR spectrometer. From there, a closed-cycle metal bellows pump returns the sample via a second 2L bulb and the Pyrex tube to the bottom of the catalyst finger to start the cycle over again (Hill and Nuth 2003).

FIGURE 18.6 LPC distribution during handling of a 30 wt% solids silica slurry in a bellows pump (Nippon Pillar PE-20MAN) recirculation loop. 

This study shows the significant benefits of an MLP pump in handling shear-sensitive CMP slurries in single-pass applications and under normal turnovers ( 100) expected in a typical fab operation. Since, the MLC pump generated far fewer >lpm particles in shear-sensitive slurries, the filter lifetime for MLC pump-based slurry delivery systems should be longer than the other AOD or bellows pump-based systems, especially when relatively open (> 1 pm nominal rating) filters are used in the global loop and point-of-use (POU) locations. 

Fig. 6.56 G as detector pumps operated by hand, (a) Gas pump, Peleus ball principle (b) bellows pump (c) one-hand bellows pump (d) modern one-hand bellows pump...

Pneumatics is derived from Latin meaning pertaining to air. The blacksmith s bellows pumping a fire is a primitive example. Windmills in twelfth century central Europe exhibited the technology s first large-scale possibility. Development was dependent on discoveries made in the seventeenth and eighteenth centuries about gas properties, especially how... 

Figure 3.6.3 Draeger bellows pump and tube (Courtesy Draeger Ltd)...

Ideal mixing (CSTR) is obtained with the recirculating rates available from the bellows pump used to this system. The corresponding residence time distribution function is not of value in the analysis of the kinetics since it is anticipated that non-linear rate expressions will be encountered. 

A metal bellows recycle pump described by Hanson (10) was used to maintain a recycle ratio in excess of 30 to 1 so that completely mixed or gradientless reactor performance was obtained. The reactor, metal bellows pump, and recycle lines were contained in a forced convection oven held at the reaction temperature. 

Combination hand-operated bellows pump and 7. Personal monitor for measuring exposure to gas detector tube. hazardous atmospheres. 

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