Precision addressable water leak locating controller featuring 35mm DIN rail modular housing, RS485 Modbus telemetry, and Form C dry contact relay.
Authorized distribution via SRE Pte. Ltd. Supplied with genuine ProEngiTools / Sensing Systems factory documentation, standards compliance, and lot traceability.
LOC-150 / XW-PC-3 Addressable Water Leak Security Alarm Locating Detector Unit
Precision addressable water leak detection controller with pinpoint location accuracy (±0.5m + 1%) across sensing lengths up to 150 meters. Features RS485 Modbus-RTU/ASCII dual-protocol telemetry, SPDT dry contact relay output (250VAC/30VDC 3A), ±15kV ESD and ±4kV surge protection, standard 35mm DIN rail mounting, and automatic reset after drying for mission-critical data centers and industrial infrastructure.
ProEngiTools / Sensing Systems Engineering & Technical Overview
The LOC-150 / XW-PC-3 Locating Leak Detection Controller is a mission-critical supervisory alarm unit engineered for large-scale data center facilities, telecom exchange rooms, semiconductor cleanrooms, and intelligent commercial buildings. Utilizing precision balanced bridge impedance telemetry, the controller continuously interrogates addressable 4-wire liquid sensing cables over lengths of up to 150 meters (492 feet), pinpointing the exact location of water leakage to within ±0.5 meters + 1% in under 8 seconds.
Engineered with industrial-grade electronic components and advanced digital noise filtering, the LOC-150 distinguishes authentic liquid contact from environmental humidity fluctuations, electromagnetic interference, and cable movement. The system features independent multi-state diagnostic algorithms that continuously verify sensing cable loop continuity, automatically raising a dedicated cable-break or interference alarm if a lead wire is cut, disconnected, or shorted by external mechanical force.
For seamless integration into Building Management Systems (BMS), SCADA, and DCIM platforms, the controller features an RS485 half-duplex serial interface supporting auto-adaptive Modbus-RTU and Modbus-ASCII protocols with communication distances up to 1,200 meters. A built-in high-capacity Form C dry contact relay (250VAC / 30VDC @ 3A) provides direct, instantaneous fail-safe linkage to activate solenoid shutoff valves, motorized actuators, acoustic-optical strobe alarms, or emergency pump de-energization.
Housed in a standard 35mm DIN rail modular enclosure (85.8 mm x 70.0 mm x 57.6 mm), all power, RS485, relay, and sensing cable connections are terminated via rugged pluggable terminal blocks for rapid field installation. Once the detected moisture has dried or been removed, the LOC-150 automatically restores itself to normal supervisory status without requiring manual button resets or technician dispatch.
Key Engineering Highlights:
- High-Precision Real-Time Pinpoint Locating: Accurately identifies water leak location along up to 150m of sensing cable with ±0.5m + 1% detection accuracy and 0.1m readout resolution.
- Ultra-Fast Diagnostic Response Time: Detects liquid contact and triggers alert state in ≤ 8 seconds (typically 5 to 8s) to prevent catastrophic water damage.
- RS485 Telemetry with Modbus-RTU / Modbus-ASCII: Long-range serial communication up to 1200 meters with auto-adaptive protocol detection, selectable baud rates (1200 to 19200 bps), and software-configurable address range (1 to 254).
- Fail-Safe Form C Dry Contact Relay: Integrated SPDT relay (NO/COM/NC) rated at 250VAC/3A and 30VDC/3A provides direct hardware linkage to automated shutoff valves, audio-visual sirens, or BMS digital inputs.
- Comprehensive Triple-State Diagnostics: Distinct visual LED status indicators for normal power supervision, active liquid leakage alarm, and sensing cable fault/disconnection/breakage.
- Zero-Intervention Auto-Recovery: Automatically clears alarm status and restores standard monitoring immediately after moisture dries, eliminating unnecessary maintenance downtime.
- Industrial Electromagnetic Immunity: Robust EMC protection engineered for harsh industrial environments with ±15kV air / ±8kV contact ESD discharge, ±4kV surge protection, and ±4kV electrical fast transient (EFT) immunity.
- Standard 35mm DIN Rail Enclosure: Compact 4-module flame-retardant housing (85.8 x 70 x 57.6 mm) with pluggable screw terminals designed for rapid cabinet installation.
- Universal DC 9V to 30V Power Input: Wide supply voltage compatibility (12V DC recommended) with ultra-low power consumption (≤ 0.5W) for reliable 24/7 continuous operation.
- Universal 4-Core Cable Compatibility: Directly compatible with industry-standard 4-wire addressable sensing cables, Raychem TT1000 standards, and fluoropolymer corrosion-resistant liquid sensing cables.
Typical Industrial Applications
- Mission-Critical Data Centers, Cloud Server Rooms & Network Colocation Facilities
- Raised Access Computer Floors, Under-Floor Chilled Water Pipe Risers & Header Trays
- Precision Air Conditioning (CRAC / CRAH) Condensate Drain Pans & Chiller Plants
- Semiconductor Cleanrooms, Wafer Fabrication & High-Tech Manufacturing Plants
- Telecommunication Base Stations, Mobile Switching Centers & Fiber Termination Hubs
- Pharmaceutical Laboratories, Chemical Processing Facilities & Clean Production Areas
- Museum Archives, Rare Document Libraries & High-Value Asset Storage Vaults
- Commercial Skyscraper Building Management Systems (BMS) & Automated Solenoid Shutoff Linkage
Patents & Compliance
- CE Directive 2014/30/EU (Electromagnetic Compatibility) Certified
- RoHS Directive 2011/65/EU Hazardous Substance Restriction Compliant
- IEC 61000-4-2 (Electrostatic Discharge Immunity: ±15kV Air, ±8kV Contact)
- IEC 61000-4-4 (Electrical Fast Transient / Burst Immunity: ±4kV)
- IEC 61000-4-5 (Surge Immunity: ±4kV)
- UL94 V-0 Flame-Retardant Engineering Modular Enclosure
- ISO 9001:2015 Precision Industrial Instrumentation Quality System