Development of electronic units of the natural gas humidity analyzer

Abstract

Moisture content is an important parameter of natural gas during its extraction, transportation and processing. Natural gas moisture analyzers are used to monitor the natural gas drying process and in gas metering units to monitor agreed specifications. When transporting gas under high pressure or at low temperatures, high measurement accuracy is important, since deep dehydration is quite expensive, and transporting gas with a high-water content can also lead to premature wear of pipes and fittings. The temporary cessation of supplies of the most commonly used moisture analyzers caused the need to develop domestic analogues. In the work, an electrical block diagram was developed, electrical circuit solutions were worked out and nominal values of electronic components for the manufacture of printed circuit boards and blocks of a prototype device for assessing the moisture of natural gas were selected. In particular, a voltage converter to diode laser current, a thermistor resistance converter to voltage and a pressure and temperature sensor for an analytical cell were developed, photodiode amplifiers and voltage stabilizers were selected, and a system for adjusting and stabilizing the temperature of the reference cell was developed.