Electrical instruments

As normally used in the process industries, the sensitivity and percentage of span accuracy of these thermometers are generally the equal of those of other temperature-measuring instruments. Sensitivity and absolute accuracy are not the equal of those of short-span electrical instruments used in connection with resistance-thermometer bulbs. Also, the maximum temperature is somewhat limited. [Pg.760]

ISA S12.11. 1973. Electrical Instruments in Hazardous Dust Locations. Instrument Society of America, Research Triangle Park, N. C. [Pg.151]

Magison, E. C. 1978. Electrical Instrumentation in Hazardous Locations. 3rd ed. Instrument Society of America, Pittsburgh, PA. [Pg.152]

RP12.1 Recommended Practice for Electrical Instruments in Hazardous (Classified) Atmospheres Intrinsic Safety... [Pg.550]

Environmental Condition for Process Measurement and Control Systems Temperature and Humidity Electrical Instruments in Hazardous Locations, Ernest C. Magison, 1978... [Pg.550]

DATA BOUNDARY Electrical, instrumentation, and mechanical components in... [Pg.80]

Important, but less extensive, uses are found in the production of non-ferrous alloys. It is a scavenger in several A1 and Cu alloys, while man-ganin is a well-known alloy (84% Cu, 12% Mn, 4% Ni) which is used in electrical instruments because the temperature coefficient of its resistivity is almost zero. A variety of other major uses have been found for Mn in the form of... [Pg.1042]

Process interpretation for proper mechanical, structural, civil, electrical, instrument, etc., handling of the respective individual phases of the project. [Pg.3]

RP12.2 Intrinsically Siife and Non-Incendive Electrical Instruments... [Pg.33]

Doors and windows removed. Some frame distortion to steel frame buildings and cladding removed. Some electrical/instrument cables broken."... [Pg.69]

Magison, E.C., Electrical Instruments in Hazardous Locations. Third Edition, ISA, Research, Triangle Park, NC, 1978. [Pg.152]

In the first part of the twentieth century, beryhium was used as coating inside fluorescent electric hght tubes, but proved carcinogenic (causes cancer) when broken tubes produced beryllium dust that was inhaled. Because of this potential to cause cancer, since 1949 berylhum has no longer been used as the inside coating of fluorescent tubes. Beryllium is also used for computer parts, electrical instrument components, and solid propellant rocket fuels. Because it is one of the few metals that is transparent to X-rays, it is used to make special glass for X-ray equipment. [Pg.68]

Process control (electrical/instrumentation) engineer Industrial hygienist Maintenance engineer Materials engineer/metallurgist Human factors specialist... [Pg.101]

These cost data are reported as purchased, dehvered, or installed cost. Purchased cost is the price of the equipment FOB at the manufacturer s plant, whereas delivered cost is the purchased price plus the delivery charge to the purchaser s plant FOB. Installed cost means the equipment has been purchased, dehvered, uncrated, and placed on a foundation in the purchaser s operating department but does not include piping, electrical, instrumentation, insulation, etc., costs. Perhaps a better name might be set-in-place cost. [Pg.12]

If at all possible, a laboratory bench or a table ca. 1 m high should be available at right angles to the vacuum frame, for ancillary equipment such as oscilloscopes, electrical instruments, microcomputers etc. and there should be within easy reach of the operator a bench or table for Dewar vessels, reagents, etc. [Pg.31]

Electric Instruments, Many and various kinds of electric instruments are used in industrial processes and in analytical and research, laboratories, including those dealing with expls and ammunition. Among such instruments may be mentioned ammeters, voltmeters, galvanometers, thermocouples, ohm meters, wattmeters, frequency meters, oscillographs, computers, etc... [Pg.677]

Figure 20-31 Three types of noise in electrical instruments. White noise is always present. A beam chopping frequency can be selected to reduce 1/f noise and line noise to insignificant values.

Uses motor and switch parts, electrical connectors, screw-machine parts, electrical instrument parts. [Pg.439]

Automated Hydrometers. One form of hydrometer utilizes an opaque stem which, as the stem rises and falls, effects the amount of light which passes through a slit to a photocell. In this way. the photocell output is proportional to specific gravity and may be recorded by an electric instrument. In another industrial version, designed for remote transmission, the hydrometer is contained within a metal cylinder. A rod connects the bottom portion of the float to an armature, which moves vertically between inductance coils. Changesin inductance are transmitted by cable to a central instrument panel receiving instrument. [Pg.1529]

Platinum Native, and as speriylite (PtAs2) Dissolution of native Pt in aqua regia, precipitation as (NH4)2PtClCatalyst adsorbent for gases manufacturing jewelry, electrical instruments, electrodes, crucibles, etc. [Pg.564]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...