Help with Venturi Vacuum Generators specifications:
Vacuum Specifications
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| Ultimate Operating Vacuum: | Vacuum or pressure is often measured in torr, or mm Hg referenced above absolute zero pressure. Sometimes the following reference terms are used: 1 torr and above: Rough Vacuum 0.001 to 1.0 torr: Medium Vacuum Below 0.001 torr: High Vacuum There are other terms and standards used, such as medium vacuum and ultra high vacuum; consult supplier for application specifications. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Pumping Speed / Displacement: | Pumping speed or displacements relates to the air volume capacity of the vacuum pump. Vacuum pumps are flow-rated according to the volume of air exhausted with no pressure differential across the pump. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Venturi Jet Type / Media
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| Venturi Jet Type / Media | |||
| Your choices are... | |||
| Venturi Air Jet | In a venturi air jet, the vacuum is "drawn" by entrainment of air by a flow of compressed air used as the motive fluid. This technology is used in a wide range of vacuum applications, from very small sampling uses to large industrial vacuum systems. They are usually used to create vacuum for air or gas systems, and are often unsuitable for liquid vacuum uses. | ||
| Steam Ejector | Steam ejectors use steam as the primary motive fluid. These are very reliable systems that are used widely in industrial vacuum systems. | ||
| Liquid Eductor / Ejector | Liquid eductors use liquids, such as oil or water, as the motive fluid to provide vacuum. These are typically used for creating vacuum in liquid systems. | ||
| Other | Unlisted or specialized Venturi type vacuum generator. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Vacuum Pump Stages
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| Vacuum Pump Stages | Stages can be sequential stages of the same technology type (mechanical or Venturi), or two or more different type pumps packaged together, such as a rough, medium, and high vacuum pump system of different technologies. | ||
| Your choices are... | |||
| Single Stage | In single stage of evacuation, air is moved directly from chamber into atmosphere. | ||
| Two Stage | Air is evacuated in two stages for lower absolute pressure. | ||
| Three Stage | Three chambers are used in succession. | ||
| Four or More Stages | Four or more evacuation stages are employed. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Application
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| Your choices are... | |||
| General Purpose / Industrial | General purpose uses covers a wide range of industrial and manufacturing applications. | ||
| Analytical / Scientific | Analytical or scientific applications include electron microscopes, analytical spectrometers, or physics experimentation. | ||
| Chemical / Corrosive Gas | Designed for use with chemicals and/or corrosive gases and vapors. | ||
| Food Processing | Food processing applications include freeze drying, conveying, and sanitary packaging. | ||
| Manufacturing Processing | Vacuum pumps designed for use in manufacturing applications such as plastics vacuum forming, degassing, vacuum sintering and casting, etc. | ||
| Medical / Laboratory | Specialized for use in highly specialized medical or biomedical laboratory applications. | ||
| Packaging | Vacuum packaging applications include shrink-wrapping and packaging of food, candy, electronic and medical devices and components. | ||
| Power Generation | Applications such as condenser venting and vapor recovery in power generation systems such as hydroelectric, nuclear, or fossil fuel power generation. | ||
| Pharmaceutical / Sanitary | Sanitary applications, such as pharmaceutical or food and beverage processing, require features such as sterilizability, nonabsorbent seals, and other clean components. | ||
| Semiconductor Manufacturing | Designed specifically for the demands of semiconductor, chip, or board manufacturing applications. | ||
| Other | Other unlisted, specialized, or proprietary application. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Mounting
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| Your choices are... | |||
| Benchtop | Benchtop mounting is used for products small enough to mount or be placed on a bench or table. These models may include portability. | ||
| Cart / Portable | Portable mounts include wheels, casters, or easily movable frames for frequent relocation. | ||
| Floor / Skid | The device rests on floor or on a skid; they are typically used for larger vacuum pumps. | ||
| Permanent Installation | Permanent installation is used with very large systems or stations that are installed permanently in one place. | ||
| Other | Other unlisted, specialized, or proprietary mounting style. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Features
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| OEM Controller / Control Panel? | Vacuum pump or vacuum system has an integral OEM controller or control panel consisting of adjustment controls more than a simple regulator knob. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Valve Sequencing Control? | Sequence control of valve opening is critical, especially in a high vacuum system. This option denotes pumps with valve control. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Vacuum Gauge? | Vacuum gauges have a dial, numeric, or other readout of pressure. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Integral Trap(s)? | Traps are used to prevent backstreaming and resultant contamination from roughing pumps in high vacuum or sanitary applications. There are various trap types or technologies designed for the prevention of chamber entry by oil or water vapor, hydrocarbons, etc. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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| Gas Ballast? | Atmospheric air is allowed into the compression chamber to minimize condensate in the oil and prevent corrosion. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
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Environment
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| Operating Temperature: | This is the full required range of ambient operating temperature. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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