💡 Key Summary: 1-Channel Leak Detection Control Module for Solvent & Oil Sensors
YHSM-01S-A is a 1-channel leak detection control module that receives signals from solvent and oil leak detection sensors and provides real-time monitoring, alarm outputs and integration with host control systems. Its LCD displays operating status and settings, with user-adjustable sensitivity to suit site conditions. The module supports one YHSP-SA or YHSP-SA-Ex point sensor. When connecting YHSP-SA-Ex, an MTL7760ac Zener barrier is required.
YHSM-01S-A: The Core Control Module for Solvent & Oil Leak Detection Systems
On-site Setup, Alarm Outputs, and Monitoring Integration in One Unit
YHSM-01S-A connects one YHSP-SA or YHSP-SA-Ex point sensor to provide leak detection and equipment integration for solvent and oil applications. YHSM-01S-A processes sensor signals and provides NO / NC relay outputs for alarm and control equipment. It supports monitoring integration via RS-485 (Modbus RTU, YH-BUS) with PLC / DCS / SCADA systems, together with LCD-based status monitoring and sensitivity adjustment.
⚡ Leak Monitoring & Alarm Output
• Processes signals from the connected sensor and provides NO / NC relay alarm outputs.
• Supports real-time monitoring and integration with host control systems.
🔗 Compatible Sensors & System Configuration
• A 1-channel control module supporting one YHSP-SA or YHSP-SA-Ex point sensor.
• An MTL7760ac Zener barrier is required when connecting the intrinsically safe YHSP-SA-Ex sensor.
🖥️ LCD-Based On-Site Setup & Status Monitoring
• Check operating status and settings directly on-site via LCD (25×15mm).
• Adjust sensitivity directly on the module to suit site conditions.
⚙️ Built-in Outputs & Communication for Equipment Integration
• Provides 3 NO contacts and 1 NC contact for alarm and control integration without an additional relay.
• Supports RS-485 communication with Modbus RTU and YH-BUS protocols for integration with PLC / DCS / SCADA systems.
"From sensor signal processing to alarm output and monitoring integration,
YHSM-01S-A is a control module that enables a site-optimized response system for solvent & oil leaks."
| Model | Type | Main Target Liquids |
| YHSP-SA | Electronic Leak Point Sensor | For Solvent & Oil |
Organic solvents and oils. (Maximum 1 sensor per module) |
| YHSP-SA-Ex | Intrinsically Safe Electronic Leak Point Sensor | For Solvent & Oil MTL7760ac Zener barrier required |
| Item | Details |
| Model | YHSM-01S-A (1-Channel Leak Detection Control Module) |
| Channels | 1 Channel |
| Input Sensor | YHSP-SA / YHSP-SA-Ex leak point sensor |
| Sensor Capacity | 1 sensor maximum |
| Measurement Method | Level Shift (voltage shift method) |
| Display | LCD (25 × 15 mm), status and settings display |
| Power Supply | DC 24 V (±10%) |
| Power Consumption | 1 W maximum |
| Power Indicator | Power status indicator (PWR) |
| Alarm Output | • Relay outputs (NO / NC) for alarm and control equipment • Alarm relay: 3 NO (Normally Open) / 1 NC (Normally Closed) |
| Communication | RS-485 (2-wire); Modbus RTU and YH-BUS (proprietary protocol) |
| Baud Rate | 9,600 / 14,400 / 19,200 / 38,400 / 57,600 / 115,200 bps |
| Communication Distance | Up to 1,200 m, depending on cable specifications |
| Operating Temp / Humidity | −20 to +60°C / 10–90% RH (non-condensing) |
| Storage Temperature | −30 to +70°C |
| Housing Materials | ABS, PC, Aluminum |
| Mounting | Panel mounting |
| Dimensions (W×H×D) | 76(W) × 96(H) × 28(D) mm |
| Weight | Approx. 500 g |
| Main Functions | • LCD monitoring: real-time status and settings via LCD (25×15mm) • Sensitivity adjustment: user adjustable to match site conditions • External communication: RS-485 (2-wire) interface to PLC / DCS / SCADA • Protocols: Modbus RTU and YH-BUS (proprietary protocol) • Sensor connection: one YHSP-SA or YHSP-SA-Ex; MTL7760ac required for YHSP-SA-Ex • Relay contacts: 3 NO + 1 NC; no additional relay required |
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