Piezometer method

Piezometer Method. To measure the compressibility of liquids near 1 atm we have developed a piezometer system (87). 

High Pressure PVT Properties. The earlier volumetric methods (113,114) consisted of a piezometer, similar to the one shown in Figure 6, which is contained in a pressure bomb. The... 

The purpose of this chapter is not to promote the replacement of traditional physically based methods of assessing groundwater-lake systems with isotopic methods, but rather to demonstrate the utility of isotopic techniques. Physically based methods can provide more detailed information on the spatial and temporal variability of a groundwater-lake system than isotopic approaches can provide. Regardless of the method chosen, however, an adequate number of piezometers is necessary to ensure that groundwater samples are collected from upgradient areas. 

This method has the merit that it is not very important just where the downstream piezometer is located, provided only that it is not too close. The same connections may then be used for different-sized ori-... 

No. 18 Delete any methods not compatible with local conditions. No. 19 Pertinent field tests include drop tests, pumping tests and piezometer installations. Methods of performing such tests may be found in Theory of Aquifer Tests, U.S. Geological survey Water-Supply Paper 1536-E, 1962, and the U.S. Bureau of Reclamation s Earth Manual (Appendix pages 541 to 562) and other technical publications. If desired, specific test methods may be specified in this paragraph. 

DETERMINATION OF SATURATED HYDRAULIC CONDUCTIVITY IN FIELD 2.12.1 Piezometer Method (Below Water Table)... 

The method of a piezometer of variable volume in glass cells has been used to measure the density of superheated light and heavy water. Experimental data have been obtained in the range of temperatures (0.7-0.95)7 and pressures from the saturation line to those close to the boundary of spontaneous boiling-up. 

Monitoring of landslides plays an increasingly important role in the context of living and coping with these natural hazards. The classical methods of land surveys, inclinometers, extensometers, and piezometers are still the most appropriate monitoring measures. In the future, the emerging techniques based on remote sensing and remote access techniques will undoubtedly be of main interest. 

Weekly measurement of pore water pressure by the vibrating wire piezometer method. 

To determine pvT behavior of superheated and saturated vapor, Benning and McHamess [2.25] used the method of the nonballast piezometer with a mercury lock and pycnometer. The authors approximated the measurement re-... 

For the experimental investigation of compressibility of superheated and saturated vapors, the method of the constant-volume nonballasted piezometer was employed. The fundamental variables (pressure, temperature, and mass of the substance) were measured with instruments of the same class as those used in the work of MEI. The distinguishing feature of the piezometric rig was the use of a membrane zero indicator of pressure of the electrocontact type. The sensitivity of this instrument reached 1 mm water column, but the zero point drifted by 10 mm water column. The authors in Refs. [2.19, 2.21] evaluated the scatter of experimental points on the saturation curve as 0.4% for pressure, and the repeatability of presssure during the forward and reverse tracing along the constant-volume lines was 0.15%. 

A more thorough and detailed investigation of compressibility of Freon-23 in the gaseous and liquid phase was carried out at MEI under the supervision of D. C. Raskazov and E. K. Petrov [4.3, 4.6, 4.14]. For the determination of compressibility of the gas, the researchers employed the method of successive expansion on the isotherm. Unlike the classical Burnett method, the expansion of the substance was carried out in a previously graduated piezometer (volume V ). The quantity of the substance in the piezometer was determined by weighing after freezing out the freon into a separating container. The formula for the calculation of the specific volume is... 

To determine the density of liquid freon, the method of a nonballast constant-volume piezometer with membrane-mercury separator was used. The mass of the substance in the piezometer was determined by weighing after freezing out Freon-23 in the separating container. The temperature and pressure were measured using the same instruments as in Ref. [4.3]. Experiments were conducted along the isochores. The maximum error of measuring specific volume fell within the range 0.1-0.2%. 

Belzille et al. [4.18] used a modified version of the Burnett method with three piezometers two of them had a volume of 550 cm, and the third had a volume of 183 cm. This allowed them to carry out the experiments with consid-... 

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