💡 Key Summary: 4-Channel Leak Detection Control Module for Solvent & Oil, Managing Up to 4 Zones at Once
YHSM-04S-A is a 4-channel leak detection control module designed to manage solvent and oil leak detection sensors across multiple areas using four independent channels. The LCD provides an at-a-glance overview of each channel’s status. It supports both per-channel alarm outputs and a combined (system) alarm output, enabling an efficient and cost-effective leak detection setup for sites with many detection points such as around piping, tanks, and pumps.
YHSM-04S-A: A 4-Channel Control System for Integrated Management of Multiple Detection Points
Separate and Manage Solvent & Oil Leak Detection Zones by Channel
In large areas or sites with many detection points, zone separation and centralized monitoring are key to safe operation. YHSM-04S-A 4-Channel Leak Detection Control Module manages sensors by zone through four channels, while allowing operators to check overall status on one screen and output alarms as needed, building an efficient response system for solvent and oil leaks.
⚡️ Simultaneous 4-Channel Monitoring & Fast Alarm Output
• Monitors leak status by zone using four independent channels and outputs channel alarms (Relay & LED) when an abnormal condition is detected.
• Centralized management of multiple points with one module reduces maintenance trips and improves on-site operational efficiency.
🔗 Flexible Sensor Compatibility & Expandability
• Designed for solvent & oil detection sensors, and optimized for wide deployment in 2-wire leak detection sensor environments.
• Enables step-by-step expansion by channel for retrofit maintenance or incremental system upgrades.
🖥️ Integrated LCD Monitoring & Field Configuration
• View operating status and alarm information for all 4 channels on the LCD (60×33mm).
• Configure channel enable/disable and adjust sensitivity per channel to match site conditions.
⚙️ Per-Channel / Combined Outputs & Monitoring Integration
• Built-in 2 contacts per channel plus 4 combined (system) contacts, enabling integration with various equipment without adding external relays.
• Supports RS-485 communication and Modbus protocol for easy integration into central monitoring and automation systems.
"From per-channel detection to combined alarms and monitoring integration,
YHSM-04S-A is a 4-channel control module that builds a complete solvent & oil leak response system for large areas with one solution."
| Model | Type | Detection Targets |
| YHSP-SA | Electronic Leak Point Sensor | For Solvent & Oil | Oils, engine oil, OMCTS, tar oil, MDI, TDI, TDA, insulating oil, VOC-related liquids, etc. (Does not react to water) |
| YHSP-SA-Ex | Intrinsically Safe Electronic Leak Point Sensor | For Solvent & Oil |
| Item | Specification |
| Model | YHSM-04S-A (4-Channel Leak Detection Control Module) |
| Power Supply | DC 24V |
| Power Consumption | 3W (Max) |
| Power Indicator | Red Lamp ON (Power ON) |
| Channels | 4CH (Multi-Channel) |
| Operating Temp / Humidity | -20 – 60°C / 0 – 80% RH |
| Dimensions (W×H) | 94 × 178mm |
| Alarm Output | • RS-485 / Modbus communication, relay outputs (NO/NC) for beacon and control • Per-channel alarm relay outputs (NO/NC) |
| Key Functions | • Channel selection: enable/disable and select leak sensors by channel • LCD monitoring: integrated viewing of settings and status via LCD (60×33mm) • Sensitivity adjustment: user-adjustable sensitivity to match the environment • External communication: RS-485 serial interface for external systems • Modbus support: standard Modbus protocol • Versatility: compatible with various 2-wire leak sensor environments • Efficiency: 2 contacts per channel + 4 combined contacts reduce the need for external relays |
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