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Selecting Equipment

Selecting equipment for a new laboratory calls for a careful study of catalogs and many discussions with sales representatives. As a rule, each item considered will have its good and its less desirable points. Choosing the most suitable make and model for a specific laboratory will often involve a compromise. [Pg.102]

If a sales representative offers to arrange for a visit to a laboratory where equipment of the type being considered is in use, such an offer should not be turned down. A discussion with an actual user will be very fruitful. Some manufacturers show their equipment in display rooms, giving the prospective buyer a chance for true hands-on experience. [Pg.102]

Electronic developments have revolutionized many types of laboratory equipment. Few instruments with dials are seen today, for instance. Digital readouts have taken over. While easier to use, estimating the amount of fluctuation of unstable signals is more difficult on a digital readout. There are also cases where an instrument s readout is more sensitive than its detection device, thereby causing unstable readings. For certain applications, a dial instrument may still be preferable. Electronic balances are now the rule rather than the exception. They are not only easy to use, but they generally require less service than mechanical ones. Prices have been considerably reduced in recent years. [Pg.102]

Power supplies to instruments have come a long way since the old [Pg.102]


Select equipment design for high integrity containment... [Pg.11]

Select equipment to minimize inadvertent contact as a result of equipment failure... [Pg.11]

As with particulate removal systems, it is apparent that many choices are available for removal of gases from effluent streams. Table 29-5 presents some of the factors that should be considered in selecting equipment. [Pg.484]

Develop a technical specification for selected equipment. The tools include ... [Pg.37]

The process designer must be aware of costs as reflected in the (1) selection of a basic process route (2) the equipment to be used in the process and (3) the details incorporated into the equipment. The designer must not arbitrarily select equipment, specify details or set pressure levels for design wdthout recognizing the relative effect on the specific cost of an item as well as associated equipment such as relieving devices, instruments, etc. [Pg.47]

Direct Current (DC). This current is transmitted for industrial uses only in exceptional situations. The most common sources of direct current are storage batteries and industrial devices called rectifiers, in which alternating current is changed (rectified) to direct current, as is used in electrolytic cells for the manufacture of chlorine gas, magnesium, aluminum, and a few other chemicals. The direct current is flowing from the source through the user application and back to the source, in one direction. The motor is primarily used for speed control of selected equipment. [Pg.625]

This chapter is intended to provide guidance towards defining needs, assessing whether ventilation is the correct solution and selecting equipment and systems to match these requirements in as economic a manner as possible. [Pg.420]

Where in practice a DA plant is required, by careful selection, equipment can be provided that will not only remove the excess alkalinity but also reduce the TDS to the extent of the alkalinity removed, thereby raising the potential for high COC and lowering BD and fuel costs. The savings in fuel and treated HW provides the necessary impetus for capital expenditure. The payback period typically is under two years, and often much shorter. [Pg.195]

Consult the standards for the full specification before selecting equipment for use in... [Pg.367]

The main factors to be considered when selecting equipment for crushing and grinding are ... [Pg.468]

To understand the principles for selecting equipment for particular applications. [Pg.99]

It is worth noting from the above discussions that, when selecting equipment, it is assumed that equipment received as new will be in working order, but it is also assumed that it will break down sooner or later The reputation of individual manufacturers is worth considering when selecting equipment, both in terms of the actual products and the quality of their back-up services. The equipment which costs least to begin with is not necessarily the one which costs least when in use over a long period of time. For equipment in use, consideration centres on the fact that the items of equipment may not have been used as carefully as they should. You need to verify that they have not deteriorated to the extent that they are unsuitable for the application. [Pg.122]

The last option allows the employer to select equipment which is safe for the hazardous location. While the equipment does not have to be approved, the employer must be able to demonstrate that the design will provide the protection necessary to prevent the ignition of the vapors, liquids, gases, dusts or fibers in the hazardous location. [Pg.263]

Table 11. Design equations and operating conditions for selected equipment units. Table 11. Design equations and operating conditions for selected equipment units.
Volumes of the suspensions to be handled vary from the extremely large quantities involved in water purification and ore handling in the mining industry to relatively small quantities, as in the fine chemical industry where the variety of solids is considerable. In most industrial applications it is the solids that are required and their physical size and properties are of paramount importance. Thus, the main factors to be considered when selecting equipment and operating conditions are ... [Pg.372]

Smith, D., Spalding, M. A., and Gould R.J., Selecting Equipment to Minimize Production Costs and Maximize Profitability, SPE ANTEC Tech. Papers, 52, 814 (2006)... [Pg.476]

Typical fire protection water spray application rates for selected equipment that is typically found in open processing areas or structures are shown in Table 8-6 (API 2030). [Pg.253]

Selected Equipment Water Spray Application Rates... [Pg.254]

Equipment Selection. Choose direct and indirect reading instruments that address each parameter identified in the preliminary sampling strategy. Select equipment that is accurate, reliable and durable. Air velocity measuring equipment and smoke tubes should be included for the evaluation of exhaust ventila-... [Pg.458]

Select equipment and vendors for computers, NOS, network devices, and so on. [Pg.268]

The Reactive Chemicals Program is an important element in Dow s safety matrix. The research role includes support of the Reactive Chemicals Program, as well as maintaining location reactive chemicals programs within the research organization. The engineer selecting equipment and... [Pg.295]

Establishing standards for operating parameters of the selected equipment of the system. [Pg.440]


See other pages where Selecting Equipment is mentioned: [Pg.69]    [Pg.18]    [Pg.84]    [Pg.139]    [Pg.150]    [Pg.2]    [Pg.22]    [Pg.37]    [Pg.1]    [Pg.631]    [Pg.229]    [Pg.102]    [Pg.181]    [Pg.477]    [Pg.495]    [Pg.186]    [Pg.212]    [Pg.76]    [Pg.314]    [Pg.865]    [Pg.519]    [Pg.261]    [Pg.2]    [Pg.69]    [Pg.1256]   


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Equipment selection

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