Application of level sensors in liquid ammonia tank level monitoring

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Liquid ammonia is an important chemical raw material. It is obtained by converting gaseous ammonia into a liquid state through compression or cooling; it is a colorless and transparent fluid that is flammable, toxic, and has a strong pungent odor. Low concentrations of ammonia can irritate mucous membranes, while high concentrations can cause tissue dissolution and necrosis, posing significant hazards to the human body. When mixed with air, it can form an explosive mixture that can catch fire and explode upon exposure to an open flame or high heat. Liquid ammonia is highly corrosive and volatile, which results in a high incidence of chemical accidents. For the convenience of transportation and storage, gaseous ammonia is usually converted into liquid ammonia by compression or cooling; it is generally stored at low temperatures or under high pressure. Liquid ammonia needs to be kept in specialized storage tanks, with horizontal tanks being the most common type for storage. However, due to the low boiling point of liquid ammonia (-33.4°C), high pressure (0.8–1.5 MPa), high corrosivity, and high toxicity, it poses significant challenges to the measurement of liquid level in storage tanks. Furthermore, due to the corrosiveness of liquid ammonia, there are potential corrosion-related risks at every stage of liquid ammonia storage tank design, manufacturing, and operation. For deliberately anti-corrosion clocks, reliable measures must be taken at every stage of the entire quality assurance system, from design and manufacturing to use and disposal, should appropriate methods not be employed. To effectively control the liquid ammonia level in storage tanks, using stable and safe level gauges for measuring this level can help eliminate the safety risks associated with the use of liquid ammonia. A simple level gauge is installed on the liquid ammonia storage tank to monitor the level of liquid in the tank. The measurement is carried out according to the requirements of the on-site process; upper and lower level limits are set, and alarms are triggered once these levels are reached or exceeded. This alerts the operators, allowing them to take action promptly and prevent potential hazards. Avoid potential dangers. Traditional contact or open-type level gauges are prone to being affected by the medium during measurement, leading to issues such as measurement errors, gauge damage, and medium leakage. This not only affects production efficiency and quality but also endangers the safety of personnel and equipment. Therefore, using stable and safe level gauges for measuring the liquid ammonia level in storage tanks can effectively eliminate the safety hazards associated with the use of liquid ammonia. A corrosion-resistant level sensor from the American company SENIX, recommended by Gongcaiwang – the ToughSonic CHEM35 – is suitable for applications where corrosive liquids or gases are present; it is an excellent choice for such environments. The shortest range in the ToughSonic CHEM sensor series is 35 feet (10.7 meters). The ToughSonic CHEM 35 is sealed in a PVDF (Kynar Poly®) housing. Fully submersible, chemically resistant, and impact-resistant. It features a 9-wire cable inside the housing, which allows for connection to up to five simultaneous analog and/or switch outputs, as well as a serial interface. It is a fully configurable SenixVIEW configuration and analysis software.