NT-HL-750 hazardous-location, linear variable differential transformers (LVDT) is designed to operate in hazardous and explosive environments with the presence of flammable or ignitable gases and liquids, such as those found in refining and petrochemical plants, pipelines and oil and storage tanks. In addition, this series consists of AC-operated sensors that are Intertek-approved and hold an ETL mark that certifies them for use in hazardous locations.