A Simple Gravimetric Method to Determine Barometer Corrections
نویسنده
چکیده
Presented here is a gravimetric me thod to calibr a te barometers. The difference in forces exerted on th e pan of a balance is observed for tw o we ll charac terized artifac ts of nearly equ al masses but different volumes. During the weighing, air tempera ture and re lative humidity ar e meas ured; the ambient pressur e is then calculated from an a ir density equation. A barometer correc tion is derived and then compared to an independent value based on a s tandard barometer. The da ta indica te that pressur e can be calcul ated with an uncertainty (I S.D.) of not more than 400 ppm at one atmos phere.
منابع مشابه
A Semi-Analytical Method for History Matching and Improving Geological Models of Layered Reservoirs: CGM Analytical Method
History matching is used to constrain flow simulations and reduce uncertainty in forecasts. In this work, we revisited some fundamental engineering tools for predicting waterflooding behavior to better understand the flaws in our simulation and thus find some models which are more accurate with better matching. The Craig-Geffen-Morse (CGM) analytical method was used to predict recovery performa...
متن کاملFalse selection of syringe-brand compatibility and the method of correction during target-controlled infusion of propofol
BACKGROUND We evaluated volumetric differences of syringe brand compatibilities, and investigated the impact of false brand settings on target-controlled infusion (TCI) and their methods of correction. METHODS Gravimetric measurement of 10 ml bolus infusions was performed using BD Plastipak (BDP) and Terumo compatible syringes, while setting to 7 different kinds of brand compatibilities (BDP,...
متن کاملSECOND” Digital Elevation Model of Australia, and their effects on gravimetric terrain corrections
Large gradients, when calculated by a first-difference method, have been detected in the 9 arc-second National Digital Elevation Model (DEM) of Australia released by the Australian Surveying and Land Information Group. Gradient values implied by the mean elevations in the DEM between adjacent grid cells of up to 74° have been observed, most notably in Australia’s more mountainous regions in the...
متن کاملThe Library Barometer 2000.PDF
4 What is the use of user studies? 5 Background and aim of the report 5 Organisational aspects of quality assurance and the development of university libraries 6 Library Barometer 2000 – point of departure 8 The main standpoints of the reference group 8 The aim of the Barometer 9 Method of procedure 10 Results 11 Level 1 – A framework for interpretation: Information channels and library relatio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010