1-20 of 41
Keywords: instruments
Close
Sort by
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2405-8
ISBN: 978-0-8031-2405-9
... be short-lived if not actively and rigorously maintained. Two programs essential to maintaining a process in a state of control are the Calibration and Change Control programs. A Calibration Program involves controlling the accuracy of the instruments that control the process. If the calibration...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1994
ISBN-10: 0-8031-1898-8
ISBN: 978-0-8031-1898-0
... these global needs. The analyzers are designated the CHAMP Systems (Chemical Hazards Automated Multimedia Processors). The prototype instrumentation features SF extraction (SFE) and on-line capillary gas Chromatographic (GC) analysis with Chromatographic and/or spectral identification detectors, such as ultra...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1993
ISBN-10: 0-8031-1484-2
ISBN: 978-0-8031-1484-5
..., added consensus of standards of nomenclature, testing, instruments, procedures and evaluations. The incidental views in this paper simply supplement the up-to-date scholarly historical review by the present chairman of ASTM Committee E4 on Metallography, George F. Vander Voort. metallography...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1406-0
ISBN: 978-0-8031-1406-7
... Two instruments for the study and measurement of erosion-corrosion (EC) were developed and built: the erosion-corrosion unit (ECU) and the erosion-corrosion tester (ECT). These instruments simulate the shear and impact forces acting on industrial equipment to evaluate the corrosive wear effects...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1986
ISBN-10: 0-8031-0481-2
ISBN: 978-0-8031-0481-5
... generation of sophisticated instruments for sizing liquid particles. Based on holography, light scattering, interferometry, and imaging, and linked with computerized data reduction systems, these instruments are generally capable of rapid, nonintrusive measurements. Researchers, however, must still cope...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1983
ISBN-10: 0-8031-0266-6
ISBN: 978-0-8031-0266-8
... hydrogen sulfide total sulfur instruments monitors colorimetry air pollution measurement atmospheric sulfation Charles L. Kimbell^ and Chris L. Kimbell^ Atmospheric Sulfur Analysis Using Rateometric Colorimetry REFERENCE: Kimbell, C. L. and Kimbell, C. L., "Atmospheric Sulfur Analysis Using...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1979
ISBN-10: 0-8031-0291-7
ISBN: 978-0-8031-0291-0
... was directly related to the time after driving of the piles. concrete piles soil properties modulus of elasticity pore pressure adhesion instruments load tests standard penetration tests H. S. Lacy' Load Testing of Instrumented 225-Foot-Long Prestressed Concrete Piles* REFERENCE: Lacy, H. S...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... Fundamental to valid emission measurements is the proper calibration of the measurement instrumentation. This paper addresses the problems associated with instrument calibration and assesses the role of instrument uncertainty in the complete analysis of error. A review of the need for instrument...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... and agencies involved in the air pollution effort requires the instrumentation used to be calibrated properly. A portable calibration system provides the necessary common demoninator between a number of remote monitoring systems. This common standardization is the first crucial step before data can be compared...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... The relative influences of the absolute mean value error, the confidence interval value, and the instrument calibration accuracy is examined using on-site instrument certification data acquired in the past three years. Confidence interval has strong influence based on existing certification data...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... to an ultraviolet standard. calibration standards monitors air pollution instruments evaluation W. B. DeMore, 1 J. C. Romanovsky, 2 Milton Feldstein,3 W. J. Hamming,4 and P. K. Muellerz Interagency Comparison of Iodometric Methods for Ozone Determination REFERENCE: DeMore, W. B., Romanovsky, J. C...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... were lacking, to develop this capability. 3. Develop procedural systems necessary to make this reference bank of standards available for day-to-day instrumentation calibration, and 30-day detailed calibrations as required by the EPA. 4. Determine, insofar as practicable, our ability to perform...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... The replacement of wet-chemical methods of measuring air pollutants by more sophisticated instruments has introduced a number of new problems. Most of the new analytical instruments do not give absolute results. Instead, their measurements are relative to a reference standard containing a “known...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0297-6
ISBN: 978-0-8031-0297-2
... of the elements and deposited from air suspension. air pollution analyzing sulfates nitrates trace elements instruments calibration quality control X-ray spectrometry standard samples A. H. Pradzynski I and J. R. Rhodes ~ Development of Synthetic Standard Samples for Trace Analysis of Air...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0533-9
ISBN: 978-0-8031-0533-1
... as a function of the construction activity. This paper is limited to a description of the instrumentation, the soil conditions, and the observed readings related to the various phases of construction. excavation inclinometers surveys measurement construction bracing deflection instruments monitors...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0533-9
ISBN: 978-0-8031-0533-1
... An extensive instrumentation program was carried out over a 6-month period on a 50-ft (15.2-m) deep braced cut in dense sand. The temporary bracing system consisted of interlocking steel sheet piles (Larssen type III N ), wales, and struts from wide-flange steel sections. The soil consisted...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0533-9
ISBN: 978-0-8031-0533-1
...-11 gage shows a temperature dependency of 4.6 microstrain/10°F (8.3 microstrain/10 K) and exhibits a zero drift as high as 40 microstrain over a period of 50 days. For cross-sectional areas equal to or less than 50 in. 2 (323 cm 2 ), the Telemac SC-11 gage shows instrument error less than 10 percent...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0533-9
ISBN: 978-0-8031-0533-1
... reported by Peck for basement excavation in the downtown Chicago area. excavation bracing earth pressure load cells inclinometers deflection instruments measurement slurry coating construction performance anchors (structures) wall anchors walls monitors field tests soils J. P...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0533-9
ISBN: 978-0-8031-0533-1
... The rationale and objectives of an instrumentation and construction monitoring program for a 30 to 50-ft-deep excavation are presented. The excavation was supported by a soldier pile-tremie concrete (SPTC) wall with auger-cast, soil-supported tiebacks. The instrumentation included slope...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0533-9
ISBN: 978-0-8031-0533-1
..., and nuclear density and moisture-content probes. A critique of each type of instrumentation is included in the paper. Five thousand field observations show that the wellpoint technique can produce predictable consolidation settlements. consolidation dewatering foundations instruments monitors...