In material tank applications, reliable position feedback must combine precision with strict explosion protection. The intrinsically safe explosion-proof linear displacement sensor is designed as a direct import substitute for harsh storage and processing environments. It uses a rugged stainless-steel housing, intrinsic safety circuits, and stable resistive or magnetostrictive sensing to deliver continuous displacement data without ignition risk. The replacement model matches common international mounting dimensions, electrical interfaces, and signal outputs, so operators can upgrade without redesigning tanks, flanges, or control cabinets. Factory calibration, wide temperature compensation, and IP67 protection ensure stable performance under dust, moisture, and vibration. Compared with imported units, domestic substitutes shorten delivery cycles, lower maintenance costs, and provide local technical support. Each sensor supports 4-20 mA, RS485, or analog voltage output for PLC and DCS integration, with certified Ex ia IIC T4/T6 safety ratings. During installation, verify barrier parameters, cable shielding, and grounding to preserve the intrinsically safe loop. Routine inspection and traceable calibration keep measurement drift low and extend service life. Compact designs suit limited tank space, and custom stroke lengths are available for different material levels and mixing positions. Fast sampling and repeatable output reduce commissioning time and improve process control. This import substitution solution helps chemical, pharmaceutical, food, and energy plants improve supply security while maintaining safety compliance and measurement accuracy.