產(chǎn)品介紹 - LJ12A3-4-Z/EX 電感式接近開關(guān)
中文版：
LJ12A3-4-Z/EX 是一款基于電感原理設(shè)計的非接觸式接近開關(guān)，適用于工業(yè)自動化領(lǐng)域中對金屬物體的可靠檢測。該產(chǎn)品采用直流供電模式，工作電壓范圍覆蓋12V至36V，兼容主流工業(yè)設(shè)備電源標(biāo)準(zhǔn)，具備良好的環(huán)境適應(yīng)性。其緊湊的M12圓柱形外殼設(shè)計（直徑12mm）便于安裝和集成，尤其適合空間受限的應(yīng)用場景。
作為兩線制常開型傳感器，設(shè)備在無金屬物體靠近時保持?jǐn)嚅_狀態(tài)，當(dāng)檢測范圍內(nèi)出現(xiàn)鐵、鋼等導(dǎo)磁材料時，內(nèi)部電路自動導(dǎo)通輸出信號。檢測距離最高可達(dá)4mm，響應(yīng)時間小于1ms，滿足高速生產(chǎn)線的檢測需求。全封閉不銹鋼外殼配合環(huán)氧樹脂灌封工藝，實現(xiàn)IP67防護(hù)等級，可有效抵御油污、粉塵及潮濕環(huán)境的侵蝕，適用于機床設(shè)備、輸送系統(tǒng)、工程機械等多種工業(yè)環(huán)境。
產(chǎn)品采用寬溫設(shè)計，工作溫度范圍覆蓋-25℃至+70℃，確保在寒冷或高溫車間環(huán)境中的穩(wěn)定運行。優(yōu)化的電磁兼容性設(shè)計有效抑制工業(yè)現(xiàn)場常見干擾，內(nèi)置反接保護(hù)和過壓保護(hù)功能提升設(shè)備安全性。安裝時可通過標(biāo)準(zhǔn)M12螺紋快速固定，支持軸向或徑向布線方式，接線端子采用防松脫結(jié)構(gòu)設(shè)計，簡化現(xiàn)場調(diào)試流程。產(chǎn)品生命周期內(nèi)免維護(hù)，有效降低設(shè)備運維成本。
英文版：
Product Introduction - LJ12A3-4-Z/EX Inductive Proximity Sensor
The LJ12A3-4-Z/EX is a non-contact inductive proximity switch designed for reliable metal object detection in industrial automation systems. Operating on 12-36V DC power supply, this sensor features a compact M12 cylindrical housing (12mm diameter) that enables flexible installation in space-constrained applications.
Functioning as a two-wire normally open device, the sensor maintains an open circuit state in idle conditions. When ferrous metals (iron, steel, etc.) enter its 4mm detection range, the internal circuit activates within 1ms response time to generate output signals. The stainless steel housing with epoxy potting achieves IP67 protection rating, providing robust resistance against oil contamination, dust ingress, and moisture exposure. This durability makes it ideal for harsh environments including machining centers, conveyor systems, and construction machinery.
Engineered for industrial reliability, the sensor operates within a wide temperature range of -25℃ to +70℃, maintaining stable performance in extreme workshop conditions. Advanced electromagnetic compatibility design minimizes interference from surrounding equipment, while built-in reverse polarity and overvoltage protection enhance operational safety. The standardized M12 threaded barrel allows quick mounting, supporting both axial and radial cable orientation. Spring-loaded terminal blocks with vibration-resistant design simplify field wiring and maintenance. With its maintenance-free operation and long service life, this sensor effectively reduces total ownership costs for industrial automation systems.
