Wall-mounted Oxygen Monitor with Plug-and-Play Sensor Module and Splash-Guard Oxygen Detector for Continuous O2 Monitoring

The SG100-S is a cost-effective, IECEx & ATEX-certified explosion-proof fixed online gas transmitter designed for continuous oxygen (O2) monitoring. Housed in S316 stainless steel, it uses an electrochemical sensor with a measuring range of 0–30%VOL and a resolution of 0.1%VOL.

Featuring IP66/IP68 ingress protection, an intelligent plug-and-play sensor module, multiple standard signal outputs, and optional wireless transmission, the unit also supports magnetic remote control. It simplifies field installation and routine maintenance while delivering reliable 24-hour continuous oxygen-concentration monitoring for confined-space access, underground tunnels, sewage chambers, and industrial production facilities.

Oxygen is essential for human survival. Insufficient oxygen concentration can cause hypoxia, dizziness, and loss of consciousness, while excessive oxygen may also introduce safety risks in certain industrial environments. Confined spaces, underground pipelines, and enclosed tanks are prone to oxygen-content deviation caused by gas consumption or displacement. Continuous fixed-point oxygen monitoring is therefore critical to safeguarding on-site operators entering these hazardous zones.

• Intelligent plug-and-play sensor module: Supports calibration via Safegas PC software. When the sensor reaches end-of-life, users only replace the sensor module on-site — no need to send the whole unit back to the factory, greatly reducing maintenance workload and equipment downtime.
• IP66/IP68 high-grade dust- and water-resistant enclosure with standard splash guard: The splash guard effectively blocks splashing water, rain, and large-particle dust. It adapts to outdoor installations and damp workshop environments, protecting the internal sensor core from environmental erosion.
• Multiple compatible signal output options: Supports 2-wire / 3-wire 4–20mA and RS485 Modbus, with optional HART output. It connects seamlessly to mainstream PLC, DCS, and various industrial control systems for centralized data acquisition.
• Optional LoRa and 4G wireless transmission modules: Enables remote real-time data viewing and historical-data downloading. Users can grasp oxygen-concentration status remotely without on-site inspection.
• Optional 3-relay group for alarm linkage: Low-alarm, high-alarm, and fault-alarm relay outputs can drive external alarm lamps, buzzers, and ventilation-interlock equipment, automatically triggering safety actions once oxygen concentration deviates from safe thresholds.
• Magnetic non-contact operation: Parameter setting, zero adjustment, and other configurations can be completed with a magnetic tool without opening the instrument housing, ensuring safe operation within explosive-hazard areas.
• Complete mounting-bracket accessories supplied: The ready-to-use bracket simplifies wall-mount installation and shortens on-site construction time for engineering projects.
• Dual-material housing selection: Standard S316 stainless-steel housing, with die-cast aluminum housing as an alternative, coping with ordinary and moderately corrosive industrial atmosphere scenarios respectively.

• Confined-space pre-entry oxygen-safety continuous monitoring
• Underground tunnel and pipeline work-area oxygen detection
• Sewage-chamber and manhole-peripheral gas supervision
• Chemical-industry enclosed-tank maintenance-site safety warning
• Mining-site underground working-area oxygen monitoring

Shenzhen YuanTe Technology Co., Ltd. (Safegas) — Established in 2010, YuanTe specializes in the R&D, manufacturing, and sales of gas detection equipment and integrated systems, with over 16 years of experience. The company serves industries including oil & gas, chemicals, energy, environmental protection, electronics, municipal engineering, agriculture, forestry, and household appliances.

• International certifications: IECEx, ATEX, and EMC certified for explosive atmospheres.
• Full product range: Portable detectors, fixed transmitters, analyzers, control panels, docking stations, and accessories.
• Wide gas coverage: Hundreds of gases (toxic, flammable, oxygen, VOCs, CO2, refrigerants, etc.).
• Quality management: ISO9001 and ISO45001 certified; over 100 independent intellectual property patents.
• High production capacity: Over 80,000 units per year; fast delivery (typically 5–7 working days).
• Global support: 24/7 after-sales service and tailored solutions.