1. Level-Measuring Installation UUE1r-N-20 Based on a Laser Interferometric Measuring System.
- Author
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Bikkulov, V. Sh. and Kondakov, A. V.
- Subjects
- *
CONFIDENCE intervals , *MEASURING instruments , *LASERS , *ENVIRONMENTAL auditing - Abstract
Methods of increasing the accuracy of liquid level measurements are considered. The level-measuring installation UUE1r-N-20 based on the XL-80 laser interferometric measuring system with a direct liquidlevel measurement capability in the range of 0–20 m is presented. The principle of operation of the measuring system of the level-measuring installation is based on measuring the linear movements of the float in the liquid relative to the absolute fixed zero of the level-measuring installation. A mathematical model is provided for determining the liquid level using a level-measuring installation, taking into account the effect of environmental parameters on the elements of the measuring system. The metrological characteristics of the level-measuring installation are calculated, including the uncertainty of the liquid level measurements. The confidence limits of the total error of measuring a unit of the liquid level with a confidence probability of 0.95 are ±0.11 mm when transferring a liquid level unit to the standards or liquid level measuring instruments with an absolute fixed zero, and ±0.044 mm when transferring a liquid level unit to the standards or liquid level measuring instruments without an absolute fixed zero. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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