Measurement Library

Measurement Science Conference Publications (1974)

Biomedical Service Responsibilities Of The Commercial Contractor
Author(s): Howard W. Blackman
Abstract/Introduction:
The engineer and the medical practitioner continue to become more intertwined in their professional disciplines. Biomedical equipment is pouring into the health care community. Advances in engineering technology and in medical technique of treatment and diagnosis create an atmosphere of excitement for the biomedical engineer and the biomedical equipment technicians.
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Document ID: EEC807F3

New Developments And New Techniques For Computerizing Test And Mea Sure Ment
Author(s): Loebe Julie
Abstract/Introduction:
This paper describes a new, extremely versatile and accurate system for automatic test, calibration, certification and data acquisition. The special instrumentation, interfacing, programming and computer equipment developed for this system, and applications to a wide range of component, sub-assembly and instrument testing are discussed. The new equipment and techniques make it possible to carry out virtually all of the present day classes of test--from production levels of accuracy to the highest standards laboratory level of accuracy-- with one universal system. Applications of the technology to meter, power supply, component, oscilloscope, and printed circuit board testing will be described as well as its applicability to general purpose automated data acquisition.
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Document ID: 3F16E7C3

Standards Requirements Fo-R Au-Tomated- Syst-E-M-
Author(s): A. L. Lance, W. D. Seal
Abstract/Introduction:
Speed, accuracy, and versatility makes Automatic Test Equipment the most powerful measurement capabi1it.y available to the engineer and technician. The qualification being that the s.ystems be suitably implemented. This qualification suggests that the measurement results can be greatly z.f?ected by the degree of specialization and special knowledge of the person ?erforming the measurements. The user must have the knowledge, ability, and experience to use these systems creatively in the solution of measurement problems.
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Document ID: 64A12DEF

Regional Maintenance Of The Volt Using Nbs Volt Transfer Techniques*
Author(s): Woodward G. Eicke, Jr., Laurel m. Awier
Abstract/Introduction:
In cooperation with five industrial standards laboratories the National Bureau of Standards studied the feasibility of establishing a regional volt maintenance and surveillance program in the greater Los Angeles, California area. The objectives were to improve surveillance, reduce dependence on NBS and have each laboratory maintain its unit of voltage to within 1 ppm of the U.S. legal volt. A two phase program was established, the first to characterize the five laboratories and the second to carry out the surveillance. After 3 years all laboratories were found to be maintaining their unit to within better than 1 ppm of the U.S. legal volt.
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Document ID: DC4A9944

Odd Observat I Ons Of S I Ngapore Is Successful Metrication Program
Author(s): Donald E Morgan
Abstract/Introduction:
The title of this paper could have been *Metrication in a Totalitarian State. The only difficulty is that I looked up the dictionary definition of totalitarian and it requires that one party be in control while making all other parties illegal. This is not true in Singapore. One party does occupy 100% of the seats in Parliament. It is not true that all other parties are illegal. It is true that the opposition candidate in the constituency from which Prime Minister Lee Kuan Yew was also standing for election is now in detention. Detention is a euphemism for the legal procedure by which citizens are jailed for political crimes, The opposing candidate was chairman of the Barisan Socialis, or opposition party, and his crime was referring to the Prime Minister as a rascal, Now you can see why I was tempted to use the word totalitarian in describing the Singapore government, since it comes very close to meeting the dictionary definition.
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Document ID: 610F821B

Cost Reduction In Precision Resistive - Ratio Measurements
Author(s): George W. Mcgee
Abstract/Introduction:
Resistive network component testing to a high precision (0.1 ppm) is established by voltage divider methods. By utilizing new concepts, . measurement accuracy and reliability are increased while providing cost reductions through decreased test times.
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Document ID: A183B094

Automated (CPUTERIZED) Calibration Of Low Level Devices - Standard Ce Ll S, Resistors, Platinum Thermometers, AC/DC Transfer Therkocouples And Load Cells
Author(s): Loebe Julie
Abstract/Introduction:
Some of the most difficult and tedious work in the standards and calibration laboratory has to do with measurements requiring unusually high accuracy (lppm t o .Olppm), high sensitivity (0.1 microvolt to nanovolts) or both. This paper describes work done on automating such measurements using a new digital measurement instrument and high-gain preamplifier in conjunction with a new low-level digital scanner. The 1 imit of performance for a new computerized system (which includes these instruments, together with speciaily designed. interface equipment, software and central processor) is sufficiently high to accomplish even these difficult measurements quickly, accurately and automatically. The total system includes complete prerecorded software required for carrying out the measurements automatically in accordance with standard procedures, automatically performing the standard statistical data analysis and automatically printing out or plotting calibration reports and data in standard form.
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Document ID: FB39EBD6

Laser Interferometry The Laboratory Worxhouse
Author(s): m. R. Carrara
Abstract/Introduction:
The contents of this paper describe a selected number of techniques utiliaing the laser interferometer as a laboratory standard. Since the Lasers implementation into the calibration system as a standard of length, numerous applications have evolved. The first of these techniques originated when the laboratory was requested to perform a dimensional analysis, to very accurately establish several hole locations, on a master tooling plate. Conventional measuring instruments were inadequate because of the tight hole location tolerance, less than t.0001. The plate size was approximately 12 X 24. with holes located from .250Vf to 19.00011 apart.
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Document ID: 117D7C07

Optical Propagation In The Marine Environment
Author(s): T. m. Houlihan
Abstract/Introduction:
During the past year, personnel in the Electra-Optics/Laser Technology Research Group at the Naval Postgraduate School have been committed to the task of providing descriptions of the marine environment with respect to laser propagations. Primary objectives of the . project include acquisition of environmental data from the marine boundary layer and the subsequent determination of similarity expressions for the characterization of optical transmissions therein. Of note with respect to Naval applications of laser technology is the fact that existent similarity parameters which pertain to laser propagation in the atmosphere have only been recently validated in overland tests. Hence, nominal data exists concerning the effects of air-sea interactions upon optical transmissions in the marine environment. In this regard, the interdisciplinary effort in electrooptics at NPS, is significant since fundamental meteorological and optical measurements are being performed throughout each phase of the research.
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Document ID: 9A5A40EE

Makx Your Data Pay Off
Author(s): Donald J. Greb
Abstract/Introduction:
In a fundamental sense, data and data programs of calibration laboratories are no different than any other management tool or piece of equipment. They need to be assessed with a critical eye at regular intervals and the elements found to be useful and profitable should be retained and those elements found to be unnecessary3 unused, or unprofitable should be discontinued or modified. In these days of electronic data processing, extensive and complex data programs are feasible and there has been a tendency to gather and process much data of questionable value just because there was computer time and programming time available. As more and more good programs come into being, our data processing capability is being severely strained and we need to get rid of unproductive data programs.
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Document ID: 3CDA9530

Techniques Of Grain Moisture Meter Calibration
Author(s): Vashek Cervinka
Abstract/Introduction:
The calibration method for grain moisture meters was investigated by using standards and grain samples. The basic objectives of this project were to evaluate the following factors: . 1. The application of the standards11 to the calibration of grain moisture meters. 2. The comparison of the standards with grain samples (as used by the U.S.D.A.) in meter calibration. 3. The operational characteristics of the standards and grain samples.
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Document ID: E1A92AAF

The Science Of Medicine Becomes More Exact
Abstract/Introduction:
Not too many years ago it was common practice among engineers and mathematicians to refer to medicine as an inexact science, Certainly, the complexit)l of a living organism, especially a human being, is a contributinq factor but this is a fixed factor. The important varial le has been the develdpment of new diPgnos tic, therapeutic and monitoring sys terns.
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Document ID: 3B6E8115

Trecase For In-House Instrument Service
Author(s): Donald J. Greb
Abstract/Introduction:
In-house capability for instrument calibration always carries with it a certain degree of capability for performance of other elements of instrument service such as repair, routine maintenance, receiving inspection/test, modification, and evaluation. While calibration per se can sometimes be accomplished as well or better by commercial laboratories, it is the totality of secondary capabilities that many times tips the scales in favor of having and retaining full in-house capability. None of these items is of major importance individually, but taken together they contribute substantially to the utility and flexibility of the test equipment inventory.
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Document ID: 9DEEA9D6

The Role Of Sub-Contract Calibration In Government And Industry
Author(s): Joseph Rothleder
Abstract/Introduction:
Today government, industry performing work for the government, or industry performing work regulated by government specifications, require calibration, maintenance, and repair services. The subcontract or commercial calibration laboratory is playing a vital part in the supplying of these services.
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Document ID: B26AC559

Platinum As A Practical Sensor For Temperature
Author(s): Donald J. Curtis
Abstract/Introduction:
Platinum resistance thermometers (PRT) have been used for over 100 years. Since 1927, platinum resistance temperature standards have been used to define temperature on the International Practical Temperature Scale. In the late 1950s, the number of manufacturers and designs of PRTs proliferated as applications for precision measurements became apparent in the aerospace industry.
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Document ID: 13AEDAE0

Thermocouple Sensors For Temperature Measurement
Abstract/Introduction:
Although thermocouples are used in thousands of applications and are the industrial workhorse for the measurement of temperatures ranging from sub-zero to approximately 4000 deg. F, the basic principles governing their operation are seldom completely understood. So let us discuss the basic laws governing thermocouples from the standpoint of their practical application in industry.
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Document ID: 6DDF06ED

Does Your Local Hospital Need The ME31CAL Engineer, Medical Technician, AND/OR The Act I On Profess I Onal Volunteer?
Author(s): Kenneth R. Jackman
Abstract/Introduction:
S mma ry: This third paper in the Cal-Poly Biomedical Metrology Session logically fol ows t h e f i r s t t w o - one on comnercial nedical equiprnent metrology cant ractors, and the second on metrology in hsopitals and in the service of medicine both prinarily concerned with nedical hardware and services. This following paper will attempt to cover the broad field of tnedical e q u i p m e n t s o f t w a r e (that is, the manpower and paramedics necessary to actuate the instruments and interpret the records taken fro-n vital nedical equiplnent). Tine and space will permit only a quick overview of the technological and manpower problem facing the hospitals in the U.S.A., and in developing countries. Generous references wi 11 be given to other sources and papers on these paranedic and technical problem for the readers later review, even if only lightly touched upon in this paper presentat ion
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Document ID: 85A7CA37

Temperature Measurementby Chemicalsignal
Author(s): J, E. Huston
Abstract/Introduction:
During the past century, the melting points of selected pure substances has provided the primary standards for the calibration of thermometers and pyrometers. It has been only within the past 20 years however, since a systematic approach has been made in utilizing this knowledge for purposes of temperature indication.
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Document ID: AD889095

The Development Of A Pocket Digital Thermometer
Author(s): Kenneth Junkert
Abstract/Introduction:
The age of pocket calculators and advanced C-MOS circuits makes possible a reliable and accurate pocket thermometer with four digit LED display. This paper discusses the design of a small lightweight, battery powered, portable instrument for use with either platinum or thermis tor probes, and the ability to operate continuously from a battery charger. The final design features a C/MOS/LSI circuit, continuous linearization for platinum probes, a measurement range of -40 to 500 C, . 1C resolution, five hour continuous operation on full charge, low battery indication, and -20 to 120F operating ambient.
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Document ID: 49749077

Variable Frequency Inspection
Author(s): Daniel R. Smith
Abstract/Introduction:
THE DECISION IN MONTEREY COUNTY TO BEGIN A VARIABLE FREQUENCY INSPECTION PROGRAM WAS MADE AFTER WE TOOK A CLOSE LOOK AT OUR OPERATION, AND FOUND THAT WE DID NOT LIKE WHAT WE SAW.
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Document ID: 518677C3

An Overview Of Fundamentals For Radiation Measurements*
Author(s): R. Carroll Maninger
Abstract/Introduction:
This paper gives a brief descriptive overview of the basic concepts and factors involved in the origin, detection and measurement of radiation in the environment associated with the nuclear power industry. As we shall see, the detection of radiation always involves the interaction of radiation with matter in one way or another. tions of matter. Therefore, we shall start with some elementary descrip- We shall also describe current concepts about the way radiation originates in radioactive matter and review the main characteristics of the various kinds of radiation. Then some details of the interactions of radiation with matter will be described. Finally, the applications of the interactions to make radiation sensors will be outlined.
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Document ID: 52073C3E

Radiation Monitoring Systems For Nuclear Power Plants
Author(s): Barney Hekkala
Abstract/Introduction:
WHAT IS A RAIATION MONITORING SYSTEM? IT IS A NETWORK OF INSTRUMENTS CONSISTING OF SENSING ELEMENTS AND SIGNAL CONDITIONING EQUIPMENT
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Document ID: B77C1025

Initial Testing And Calibration Of Reactor Nuclear Instrument Systems
Author(s): T. Pearson
Abstract/Introduction:
Control and Instrumentation testing at both the component and system level is performed during nuclear power plant construction preoperational and startup phases. Preoperational testing is the most extensive in both detail and applied effort. Specifications and instructions for Boiling Water Reactor nuclear steam supply system tests are prepared by the reactor vendor from plant design information and technical specifications using Institute of Electrical and Electronics Engineers (IEEE) standards as general guide lines. Actual test procedures are the responsibility of the utility and are usually cookbook versions of the vendors instructions.
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Document ID: 01853702


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