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Level-Measuring Installation UUE1r-N-20 Based on a Laser Interferometric Measuring System

  • MECHANICAL MEASUREMENTS
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Measurement Techniques Aims and scope

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.

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Notes

  1. Decree No. 737-r of the RF Government "On approval of the Strategy for Ensuring the Uniformity of Measurements in the Russian Federation until 2025" dated April 19, 2017.

  2. GOST 8.321-78. GSI. Industrial applicator level gauges and float-type level gauges. Methods and means of calibration.

  3. GOST 8.570-2000. GSI. Steel vertical cylindrical tanks. Verification methods.

  4. GOST OIML R 111-1-2009. GSI. Weights of classes E1, E2, F1, F2, M1, M1-2, M2, M2-3 and M3. Part 1. Metrological and technical requirements.

  5. GOST 34100.3-2017/ISO/IEC Guide 98-3:2008. Uncertainty of measurement. Part 3. Guide to the expression of uncertainty in measurement.

  6. GOST 8.381-2009. GSI. Standards. Methods of expression of precision.

  7. Rosstandart order No. 1996 "On Approval of the standard of the FSUE VNIIM named after D.I. Mendeleyev."

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Authors and Affiliations

  1. Russian Research Institute of Flow Measurements (VNIIR) — an Affiliated Branch of D. I. Mendeleyev Institute for Metrology, Kazan, Russia

    V. Sh. Bikkulov & A. V. Kondakov

Authors
  1. V. Sh. Bikkulov
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  2. A. V. Kondakov
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Correspondence to V. Sh. Bikkulov.

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Translated from Metrologiya, No. 9, pp. 45–51, September, 2022.

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Bikkulov, V.S., Kondakov, A.V. Level-Measuring Installation UUE1r-N-20 Based on a Laser Interferometric Measuring System. Meas Tech 65, 666–673 (2022). https://doi.org/10.1007/s11018-023-02137-5

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  • DOI: https://doi.org/10.1007/s11018-023-02137-5

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