供应接近开关， LJC30A3-H-Z/BX 价格/品牌_华东仪表网|上海双旭电子有限公司

LJC30A3-H-Z/BX是一款高性能电容式接近开关，采用先进的非接触式检测技术，适用于工业自动化领域的多种应用场景。该产品通过检测物体的介电常数变化实现精准控制，能够可靠识别金属和非金属材料，包括液体和粉末状物体。其圆柱形金属外壳设计（直径30mm）兼具耐用性与环境适应性，工作电压范围为6-36V直流，支持NPN三线常开输出模式，最大检测距离可达15mm±10%，响应频率达500Hz，能满足高速检测需求。产品采用直出线式连接方式，安装便捷，可广泛应用于机床、冶金、化工、轻纺等行业的生产线定位、计数及安全防护环节。1 5 16

技术特点

该接近开关的核心优势在于其稳定的性能表现和广泛的适用性。内置高频振荡器和放大输出电路，当目标物体进入感应区域时，通过涡流效应改变振荡状态并触发开关信号，全过程无机械接触，显著延长使用寿命。产品支持-30℃至+65℃的工作温度范围，防护等级达IP67，可抵御粉尘、油污及潮湿环境的干扰。独特的温度补偿技术确保在环境温度波动时仍保持±15%以内的检测精度，同时具备逆接保护和短路保护功能，保障设备安全运行。其模块化结构设计便于维护，环氧树脂封装工艺进一步提升了抗冲击和抗震性能。6 15 23

应用场景

This proximity switch is particularly suitable for automated production lines requiring high-precision position detection. In packaging machinery, it can accurately identify the presence of cartons or plastic containers; in food processing equipment, it reliably detects liquid levels in non-metallic pipelines. The product also excels in automotive assembly lines for parts counting, and in textile machinery for thread breakage monitoring. Its ability to sense through certain barriers makes it ideal for hazardous environments where direct contact is impractical. The corrosion-resistant nickel-copper alloy housing ensures long-term reliability even in chemically aggressive settings like pharmaceutical or chemical plants.5 18

产品优势

LJC30A3-H-Z/BX stands out for its versatility and cost-effectiveness in industrial automation. Compared with traditional mechanical switches, it eliminates contact wear and maintains consistent performance over 10 million operation cycles. The three-wire DC configuration (brown+/blue-/black signal) simplifies integration with PLC systems, while the standardized M30×1.5 mounting thread enables quick replacement. With adjustable sensitivity via built-in potentiometer, it can be fine-tuned for specific material types ranging from paper to ceramics. The switch s compact dimensions (60mm length) and lightweight design (约550g) facilitate installation in space-constrained applications. Backed by rigorous quality control, each unit undergoes individual testing to guarantee stable induction distance and output consistency.11 20 25

品牌服务

As a professional industrial sensor manufacturer, we focus on delivering reliable automation solutions with comprehensive technical support. Our global distribution network ensures prompt delivery, while dedicated engineering teams provide application consulting and troubleshooting guidance. The product is compatible with major control systems and can be customized with extended cables or special connectors upon request. With continuous R&D investment, we keep enhancing product performance to meet evolving industry demands, offering competitive solutions for smart manufacturing and IIoT applications.19 21

LJC30A3-H-Z/BX |接近开关

LJ18A3-8-Z/BX LJ为编号1 18为编号2

A3为编号3 8为编号4 Z为编号5 B为编号6

X为编号7 (具体型号请核对下面表格),

编号 N.o	构成 Composition	代码及含义 Code and definition
1	开关类别 Switch category	LJ:电感式 inductance type LJC：电容式 capacitance type LJM:霍尔式 Hall type LJB:安全防爆式 safety explosion-proof type LJH:舌簧式 mimic linear type LJH:舌簧式 reedtype
2	外形尺寸 Outward appearance code	18:18mm 12:12mm 30:30mm
3	外形代号 Outward appearance code	A 圆柱型 cylinder type A3 金属外壳 metal shell A4 塑料外壳 plastil shell
4	检测距离 Detection distance	1:1mm 5:5mm 8:8mm 10:10mm
5	工作电压 Working voltage	Z：6-36VDC Z1：30-65VDC J：90-250VAC J1：345-400VAC
6	输出状态 Output state	B：常开(NO)Normally open(NO) A：常闭(NC)Normally close(NC) C：一开一闭(NO+NC)Normally open+normally close(NO+NC)
7	输出形式 Output form	X：三线直流NPN负逻辑输出three-wire DC NPN output Y：三线直流PNP正逻辑输出three-wire DC PNP output D：二线直流输出 two-wire DC output J：交流二线输出 AC two-wire output J1：继电器输出 Relay contact output NP：NPN+PNP双输出 NPN+PNP double output