New Original Keyence EH-305 Proximity Sensor
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New Original Keyence EH-305 Proximity Sensor
1. Product Overview
The EH-305 is a compact, high-performance separate amplifier proximity sensor manufactured by Keyence, belonging to the EH series inductive proximity sensor lineup. This model adopts a split structure, separating the sensor head and signal amplifier unit to adapt to narrow installation spaces, high-temperature working environments and limited wiring layouts. It detects metal objects without physical contact based on electromagnetic induction principle, featuring stable detection for iron, aluminum, copper and other conductive metals. As a new original industrial-grade sensor, it supports long-distance signal transmission, strong anti-interference capability against inverter, motor and electromagnetic equipment interference, and is widely applied in automated assembly lines, CNC machine tools, packaging machinery, robotic positioning, conveyor counting and metal workpiece presence detection scenarios.
2. Main Functions
- Non-contact metal detection: Identify ferrous and non-ferrous metal targets without mechanical wear on sensor head and workpieces.
- Long-distance signal transmission: The cable between sensor probe and amplifier can extend up to 10 meters without signal attenuation.
- Dual output switching mode: Built-in NPN and PNP switching output, compatible with mainstream PLC, relay and industrial controller input terminals.
- Adjustable detection sensitivity: Rotatable sensitivity knob on amplifier module to fine-tune detection range for different metal materials.
- Fault self-diagnosis function: Integrated LED indicator lights for power supply status, detection trigger signal and wiring error alarm.
- Reverse connection protection: Built-in circuit protection to prevent damage caused by positive and negative power wiring reversal.
- Overload and short-circuit protection: Automatic circuit cut-off when output terminal short-circuit or overload current occurs.
- Wide voltage range operation: Supports universal DC power supply to match different industrial control power modules.
- High-speed response output: Ultra-short response time to capture fast-moving small metal parts on high-speed production lines.
- Multi-environment adaptability: Waterproof and dustproof sealed probe design for workshop, warehouse and semi-outdoor industrial environments.
3. Technical Specifications & Features
Core Technical Parameter Table
| Parameter Item | Specific Technical Data |
|---|---|
| Detection Principle | Inductive electromagnetic induction |
| Standard Detection Distance | 5 mm (for iron target) |
| Target Material Adaptation | Ferrous metal, aluminum, copper, brass, stainless steel |
| Power Supply Voltage | DC 12 V to 24 V |
| Output Type | NPN / PNP selectable open collector output |
| Load Current Max. | 100 mA |
| Response Time | Less than 0.5 ms |
| Insulation Resistance | ≥ 100 MΩ |
| Operating Temperature Range | -20 ℃ ~ +60 ℃ |
| Protection Grade of Sensor Head | IP67 |
| Amplifier Unit Protection Grade | IP50 |
| Cable Length Standard | 2 m (customizable up to 10 m) |
| Anti-interference Standard | Conforms to industrial EMC anti-electromagnetic interference standard |
| Switching Frequency | 1000 Hz |
Key Technical Features
- Split modular design: Miniature cylindrical sensor probe occupies tiny installation space; separate amplifier can be mounted on control cabinet for easy adjustment and maintenance.
- Material compensation technology: Internal circuit automatically compensates detection distance deviation caused by different metal target conductivity.
- Noise suppression circuit: Built-in filter circuit eliminates interference from frequency converters, servo motors and high-power electrical equipment nearby.
- High mechanical stability: Stainless steel sensor probe housing resists collision, scratch and chemical fluid splashing.
- Low power consumption design: Standby power consumption lower than 20 mA to reduce overall equipment energy consumption.
- Visual status feedback: Three-color LED indicators clearly display power on, detection triggered and abnormal wiring status at a glance.
- Vibration resistance structure: Internal components fixed with shock-absorbing adhesive, stable operation under equipment vibration up to 10 to 500 Hz.
4. Product Dimension & Weight
Sensor Probe Dimensions
- Shape: Cylindrical M8 thread
- Outer diameter: 8 mm
- Probe sensing head length: 12 mm
- Thread section length: 18 mm
- Total probe length (excluding cable): 30 mm
Amplifier Unit Dimensions
- Length: 68 mm
- Width: 30 mm
- Thickness: 15 mm
Weight Data Table
| Component Name | Net Weight |
|---|---|
| M8 EH-305 Sensor Probe (2m cable) | 32 g |
| Matching Amplifier Unit | 45 g |
| Complete EH-305 Set (probe + amplifier + standard 2m cable) | 77 g |
5. 10 Similar Function Keyence Proximity Sensor Models
All below models are Keyence split amplifier inductive proximity sensors with non-contact metal detection, separate probe-amplifier structure and industrial anti-interference performance, applicable to automated metal detection:
- Keyence EH-108 Inductive Proximity Sensor
- Keyence EH-110 Inductive Proximity Sensor
- Keyence EH-114 Inductive Proximity Sensor
- Keyence EH-120 Inductive Proximity Sensor
- Keyence EH-302 Inductive Proximity Sensor
- Keyence EH-308 Inductive Proximity Sensor
- Keyence EH-402 Inductive Proximity Sensor
- Keyence EH-408 Inductive Proximity Sensor
- Keyence EH-605 Inductive Proximity Sensor
- Keyence EH-610 Inductive Proximity Sensor
WHO WE ARE
Sobre nosotros
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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