scholarly journals The characterization of a piston displacement-type flowmeter calibration facility and the calibration and use of pulsed output type flowmeters

1992 ◽  
Vol 97 (5) ◽  
pp. 509 ◽  
Author(s):  
G.E. Mattingly
Keyword(s):  
Piston Displacement ◽  
Calibration Facility ◽  
Flowmeter Calibration

Liquid-Hydrogen Flowmeter Calibration Facility

1962 ◽  
pp. 189-197
Author(s):  
H. L. Minkin ◽  
H. F. Hobart ◽  
I. Warshawsky
Keyword(s):  
Liquid Hydrogen ◽  
Calibration Facility ◽  
Flowmeter Calibration

Radiometric characterization of the NASA GSFC radiometric calibration facility primary transfer radiometer

2004 ◽  
Author(s):  
John W. Cooper ◽  
Steven W. Brown ◽  
Peter Abel ◽  
John E. Marketon ◽  
James J. Butler
Keyword(s):  
Radiometric Calibration ◽  
Calibration Facility

Use of an Imaging Spectrometer for Characterization of a Cesium Dosimeter Calibration Facility

2020 ◽  
Vol 118 (4) ◽  
pp. 462-469
Author(s):  
Roger J. Champion ◽  
Robert M. Golduber ◽  
Kimberlee J. Kearfott
Keyword(s):  
Imaging Spectrometer ◽  
Calibration Facility

scholarly journals An Electrothermal Cu/W Bimorph Tip-Tilt-Piston MEMS Mirror with High Reliability

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 323 ◽  
Author(s):  
Liang Zhou ◽  
Xiaoyang Zhang ◽  
Huikai Xie
Keyword(s):  
Thin Film ◽  
Response Time ◽  
High Reliability ◽  
Resonant Frequencies ◽  
Piston Displacement ◽  
Fabrication And Characterization ◽  
Measured Response

This paper presents the design, fabrication, and characterization of an electrothermal MEMS mirror with large tip, tilt and piston scan. This MEMS mirror is based on electrothermal bimorph actuation with Cu and W thin-film layers forming the bimorphs. The MEMS mirror is fabricated via a combination of surface and bulk micromachining. The piston displacement and tip-tilt optical angle of the mirror plate of the fabricated MEMS mirror are around 114 μm and ±8°, respectively at only 2.35 V. The measured response time is 7.3 ms. The piston and tip-tilt resonant frequencies are measured to be 1.5 kHz and 2.7 kHz, respectively. The MEMS mirror survived 220 billion scanning cycles with little change of its scanning characteristics, indicating that the MEMS mirror is stable and reliable.

An Uncertainty Analysis of a NIST Hydrocarbon Liquid Flow Calibration Facility

Volume 1 ◽  
2004 ◽  
Author(s):  
T. T. Yeh ◽  
P. I. Espina ◽  
G. E. Mattingly ◽  
N. R. Briggs ◽  
Jesu´s Aguilera
Keyword(s):  
Uncertainty Analysis ◽  
Liquid Flow ◽  
Confidence Level ◽  
Jet Fuels ◽  
Expanded Uncertainty ◽  
Uncertainty Characterization ◽  
Hydrocarbon Liquid ◽  
Calibration Facility ◽  
Calibration Interval

This paper presents the uncertainty characterization of NIST’s new hydrocarbon liquid flow calibrator (HLFC). This facility uses a passive piston prover technique where fluid is driven by pumps while the measuring piston is passively stroked through the calibration interval. This facility is typically operated using MIL-C-7024C fluid (also known as Stoddard solvent – a surrogate liquid for JP-4 and JP-5 jet fuels), but using a variety of other fluids offers a wider range of measurements. The range of flows for this facility is 0.19 to 5.7 liters per minute – lpm (0.05 to 1.5 gallons per minute – gpm). Over this range, the expanded uncertainty claim for this facility is ±0.01%, at 95% confidence level. The uncertainty of a dual-turbine meter tested in the system is also reported. In addition, NIST is working to incorporate additional piston provers so that the flow for hydrocarbon liquids calibration service will reach 760 lpm (200 gpm).

Case study of the electrical hardware and software for a flowmeter calibration facility

2013 ◽  
Vol 29 ◽  
pp. 9-18 ◽  
Author(s):  
Roger C. Baker ◽  
Dave P. Gautrey ◽  
Dharshanie V. Mahadeva ◽  
Simon D. Sennitt ◽  
Alan J. Thorne
Keyword(s):  
Calibration Facility ◽  
Flowmeter Calibration
Sign in / Sign up

Export Citation Format

Share Document