SKU: SENS-0325
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SN-3006H-SJ-NO1 Rail Housing Water Immersion Sensor with Knob - RS485 & Relay Output

₹1,709.00 (Inclusive of all taxes)
Out of Stock

The SN-3006H-SJ-NO1 is a DIN-rail mountable water leak detection sensor featuring RS485 Modbus communication and relay output for integration into industrial PLCs, BMS, and data center monitoring systems. It utilizes AC-excited electrode sensing for stable, high-precision detection of water immersion in electrical panels, server rooms, and automation cabinets.

Features

  • High-precision AC inductance water detection with ≤1s response time
  • Multi-mode alarm outputs: relay (NO/NC), RS485 Modbus, and integrated buzzer
  • On-device sensitivity adjustment knob for fine-tuning to specific environments
  • Robust DIN35mm rail-mountable housing with ABS and copper construction
  • Wide 12-24V DC supply voltage range for industrial compatibility

Out of stock

Description

The SN-3006H-SJ-NO1 Water Immersion Sensor is engineered for reliable leak detection in mission-critical environments. Its sensing principle uses alternating current (AC) excitation across its copper electrodes, which provides stable measurement unaffected by electrolysis or polarization, ensuring consistent long-term performance and accurate detection of conductive liquids.

Housed in a durable ABS enclosure designed for DIN35mm rail mounting, the sensor is built for harsh industrial settings. It integrates seamlessly into monitoring networks via its RS485 Modbus interface, allowing for remote status polling and integration with SCADA systems, while the dry-contact relay output provides direct control or alarm triggering for local automation panels.

Key Features

  • AC-excited electrode sensing for stable, drift-free water detection
  • Integrated RS485 Modbus RTU communication interface for network integration
  • SPDT relay output (250VAC/30VDC, 5A) for direct alarm or control circuit activation
  • Onboard audible buzzer provides immediate local alert upon water detection
  • User-adjustable sensitivity knob tailors sensor response to specific application conditions
  • Compact, rugged ABS housing with DIN-35mm rail clip for easy, tool-free installation
  • Wide operating voltage range (12-24V DC) compatible with standard industrial power supplies
  • Low operating current (<35mA) ensures energy-efficient 24/7 monitoring

Applications

  • Continuous water leak monitoring in electrical switchgear and control cabinets
  • Early flood detection in data centers, server rooms, and telecom infrastructure
  • Integration into Building Management Systems (BMS) for facility-wide environmental monitoring
  • Protection of industrial machinery and automation lines from coolant or process fluid leaks
  • Basement, pump station, and HVAC condensate pan overflow detection

Technical Specifications

Model NumberSN-3006H-SJ-NO1
Detection PrincipleAC Inductance / Electrode Sensing
Supply Voltage12 – 24V DC
Operating Current≤ 35 mA
Response Time≤ 1 second
Output InterfacesRS485 Modbus, Relay (SPDT), Buzzer
Relay Rating5A, 250V AC / 30V DC
Communication ProtocolModbus RTU
Housing MaterialABS Plastic, Copper Electrodes
MountingDIN35mm Standard Rail
Dimensions (L x W)110mm x 60mm
Weight109 g

Frequently Asked Questions

What is the operating voltage range for the SN-3006H-SJ-NO1 sensor?

The sensor operates on a wide-range DC power supply from 12V to 24V, making it compatible with standard industrial 12V and 24V power systems commonly found in control panels and automation cabinets. Ensure your power source can provide the required ≤35mA operating current for stable performance.

How do I connect and communicate with the sensor using RS485?

Connect the sensor's RS485 terminals (typically labeled A/B or D+/D-) to your host controller's RS485 bus using twisted-pair cable. The device communicates using the Modbus RTU protocol. You will need to configure the sensor's slave address and baud rate (typically set via DIP switches or internal configuration, consult the datasheet) to poll its status registers for dry/wet conditions.

What does the relay output do and how is it rated?

The integrated SPDT (Single Pole, Double Throw) relay provides a dry-contact output that changes state when water is detected. It is rated for 5A at 250V AC or 30V DC, allowing it to directly control alarms, indicator lights, or shut-off valves, or to provide an isolated signal input to a PLC's digital input module.

How does the sensitivity adjustment knob work?

The onboard potentiometer adjusts the detection threshold of the AC-excited electrode circuit. Turning the knob allows you to fine-tune the sensor's response to different water conductivities or to prevent false triggers in humid environments. A higher sensitivity setting makes the sensor react to smaller amounts of water or less conductive liquids.

Package Includes

  • 1 x SN-3006H-SJ-NO1 Rail Housing Water Immersion Sensor

Additional Information

Weight 0.109 kg
Dimensions 11 × 6 cm