REPORT FOR MANAGEMENT MODEL VRSAC7S0 0-750 VOIT RANGE
low cost
VOLTAGE REFERENCE SOURCE FOR RESEARCH LABORATORIES · SCHOOLS · PRODUCTION TESTING AMPLIFIER GAIN CHECKS · OSCILLOSCOPE CALIBRATION · SERVO TESTING The Sorensen VRSAC750 Voltage Reference Source is a low cost, highly accurate regulator primarily designed for calibrating AC voltmeters in the 0-750 volt range. It is ideal for use with nearly every power meter commercially available. Its compact design, simple operation and accurate performance make it extremely useful to the laboratory or the production shop. The VRSAC750 is specifically designed for bench-top operation . . . all controls are within easy reach of the operator, and the reference meter is clear, easy to read, and placed at eye level to insure maximum accuracy of adjustment. Input voltage range 105-125 VAC, 1 0 Input frequency 60 ± 0 . 5 cps Input current 7 amperes maximum Output voltage 1-799 volts in 1-volt steps Output voltage accuracy ± 0 . 2 5 % at any voltage in 2 0 - 3 0 C ambient Harmonic distortion 1 % maximum introduced by the unit S I Z E 2 0 y 8 " h i g h , 193/ e " w i d e , 12" deep W E I G H T 115 pounds net
VRSAC10 — A versatile instrument for lower voltage applications featuring high accuracy at extremely low cost. Output voltage range Calibration accuracy Input voltage Input frequency
10 mvtolOvRMS in three ranges ± 0 . 1 % at full scale at 60 cps
115v ± 1 0 % , single phase 50-60 cps; to 400 cps with slightly less accuracy Waveform Distortion is negligible Regulation with load 0.25% max., with load resistance higher than 0.5 megohm Regulation with line ± 0 . 2 5 % max.
Write today for complete specifications, performance data, and quotations.
SORENSEN & C O M P A N Y , INC.
·
375
FAIRFIELD AVE.
·
STAMFORD, C O N N .
C O N T R O L L E D P O W E R FOR RESEARCH A N D
INDUSTRY
smaller departments serving smaller fractions of the company, the administrative level at which the management of the laboratory and its customers merge becomes lower and lower. The analytical laboratory therefore tends to be managed for the more exclusive benefit of the specific portion of the company it serves. Channels of communication between the laboratory and its customers are better under this type of system, and the laboratory personnel tend to be better informed concerning the plant operations they serve because of proximity to those operations. Also, the matter of proximity reduces the time and cost of delivering samples and reports. The advantages of centralization of the analytical organization are more numerous and, perhaps, more impressive than those of decentralization. Combination of analytical laboratories into larger units almost always leads to reduced analytical costs, especially in analyses which can be handled on a routine, mass-production basis. Less duplication of apparatus is required. Better1 balance of talent and manpower can be maintained. Highly trained analytical chemists and instrument specialists can be used to greater advantage in the larger, more diversified department resulting from centralization. Greater objectivity of analysis can be maintained in the centralized organization, since the analyst is not subject to as much direct supervisory pressure in the direction of sought-for results by low level management. Most important of the arguments in favor of the centralized system are those relating to the broad responsibilities of the analytical department to the company as a whole. A certain amount of standardization, coordination, consultation, and information service is required in most companies which cannot be supplied effectively by small, isolated laboratories throughout the company. Analytical service is sometimes split between two or more departments on the basis of techniques employed. For example, spectrographic analysis is sometimes separated from "wet" chemical analysis and placed in another department, such as a physics department. The author believes that this type of departmentalization is inefficient and illogical. Spectrographs, Quantometers, and other devices used for determining composition are tools of the analytical chemist and should be treated as such. The spectrograph is no more an exclusive tool of the physicist than is the chemical balance. It is important that the analytical department use the best tools available for the job at hand, and supply the judgment
For further information, circle number 16 A on Readers' Service Card, page 51 A
16 A
ANALYTICAL
CHEMISTRY
