💡 Key Summary: 1-Channel Leak Detection Control Module for Acid/Alkali & Inorganic Solution Sensors
YHSM-01S-AR is a 1-channel leak detection control module that connects one acid, alkali and inorganic solution leak point sensor and provides real-time monitoring, alarm outputs and host system integration. With the built-in LCD, operators can check operating status and adjust sensitivity in the field. Applications include chemical plants, storage tanks, piping systems, research facilities, semiconductor and display manufacturing, battery manufacturing, and marine and offshore facilities. It supports YHSP-SAR or YHSP-SAR-Ex. An MTL7760ac Zener barrier is required when connecting YHSP-SAR-Ex.
YHSM-01S-AR: Field-Ready Control Module for Acid/Alkali & Inorganic Solution Leak Response
Alarm Output, Equipment Interlock & Monitoring Communication in One
YHSM-01S-AR connects one YHSP-SAR or YHSP-SAR-Ex point sensor for leak monitoring and alarm and control integration in acid, alkali and inorganic solution applications. YHSM-01S-AR 1-Channel Leak Detection Control Module processes sensor signals and provides NO / NC relay outputs for alarm signaling. It supports integration with PLC, DCS and SCADA systems via RS-485 (Modbus RTU / YH-BUS), with LCD monitoring and user-adjustable sensitivity.
⚡ Leak Monitoring & Alarm Output
• Processes sensor input signals and provides NO / NC relay outputs for leak alarm signaling.
• Supports real-time monitoring and host system integration.
🔗 Compatible Sensors & System Configuration
• 1-channel control architecture supporting one YHSP-SAR or YHSP-SAR-Ex leak point sensor.
• An MTL7760ac Zener barrier is required for an intrinsically safe system using YHSP-SAR-Ex.
🖥️ LCD-Based Configuration & Status Monitoring
• Check operating status and settings on-site via LCD (25×15mm).
• Adjust sensitivity directly on the module to match site conditions.
⚙️ Built-in Outputs & Communication for Equipment Integration
• Provides 3 NO contacts and 1 NC contact, eliminating the need for additional relays.
• Supports RS-485 communication with Modbus RTU and YH-BUS protocols for integration with PLC, DCS and SCADA systems.
"From sensor signal processing to alarm output and monitoring integration,
YHSM-01S-AR is a control module that enables a site-optimized response system for acid/alkali and inorganic solution leaks."
| Model | Type | Detection Targets & Connection |
| YHSP-SAR | Electronic Leak Point Sensor | For Acid/Alkali & Inorganic Solutions | Acids, alkalis and inorganic solutions. (Maximum 1 sensor per module) (YHSP-SAR-Ex requires an MTL7760ac Zener barrier) |
| YHSP-SAR-Ex | Intrinsically Safe Electronic Leak Point Sensor | For Acid/Alkali & Inorganic Solutions |
| Item | Details |
| Model | YHSM-01S-AR (1-Channel Leak Detection Control Module) |
| Number of Channels | 1 Channel |
| Supported Sensors | YHSP-SAR / YHSP-SAR-Ex Leak Point Sensors |
| Sensor Capacity | Up to 1 Sensor |
| Detection Method | Level Shift |
| Display | 25 × 15 mm LCD Status Display |
| Power Input | DC 24 V (±10%) |
| Power Consumption | Max. 1 W |
| Power Indicator | Power status indicator (PWR) |
| Alarm Output | • Relay Outputs (NO / NC) for leak alarm signaling • Alarm relay: 3 NO (Normally Open) / 1 NC (Normally Closed) |
| Communication | RS-485 (Modbus RTU / YH-BUS); 2-wire interface |
| Baud Rate | 9,600 / 14,400 / 19,200 / 38,400 / 57,600 / 115,200 bps |
| Maximum Communication Distance | Up to 1,200 m depending on cable type |
| Operating Temp / Humidity | -20 to +60 °C / 10 to 90% RH (non-condensing) |
| Storage Temperature | -30 to +70 °C |
| Materials | ABS, PC, Aluminum |
| Mounting | Panel Mount |
| Dimensions (W×H×D) | 76 × 96 × 28 mm |
| Weight | Approx. 500 g |
| Key Functions | • LCD monitoring: view settings and sensor status in real time on LCD (25×15mm) • Sensitivity adjustment: user-adjustable sensitivity to match site conditions • External communication: RS-485 (2-wire) interface to PLC, DCS and SCADA systems • Protocols: Modbus RTU and YH-BUS (proprietary protocol) • Sensor connection: one YHSP-SAR or YHSP-SAR-Ex; MTL7760ac required for YHSP-SAR-Ex • Relay contacts: 3 NO + 1 NC, eliminating the need for additional relays |
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