Gas detector

oxygenelectrochemicalRS-485

Overview
This wall‑mounted oxygen leak detector is designed for hospital environments to identify elevated oxygen concentrations and trigger alarms to improve safety for patients and staff. The device is suitable for deployment in wards, ICUs and oxygen distribution areas where oxygen leakage represents a fire or safety hazard.

Applications

• Hospital wards and ICUs
• Confined spaces where oxygen is used
• Cylinder and bulk oxygen storage areas
• Pharmaceutical production and clean utility rooms

Features

• Line voltage operated standalone system (90–265 VAC)
• Plug & Play installation for fast mounting and commissioning
• Smart sensor technology with diffusion sampling
• Fast response and stable measurement over 0–25% V/V range
• Two user‑settable alarm set points with audio/visual indication
• Relay outputs (2 potential‑free) for local control and alarm interfacing
• Analog output 4–20 mA and optional RS‑485 MODBUS for DCS/PLC integration
• Option to trigger ventilation or control equipment

Technical specifications

• Gas detected: Oxygen
• Sensor technology: Electrochemical sensor
• Gas sampling: Diffusion
• Measuring range: 0–25% V/V
• Resolution: 0.1% V/V
• Accuracy: ±2%*
• Supply voltage: 90–265 V AC
• Power consumption: < 5 W
• Analog output: 4–20 mA (industrial standard, load 500 Ω max)
• Digital output: RS‑485 MODBUS (optional)
• Relay output: 2 potential‑free contacts
• Alarm: Audio and visual alarm indicators
• Local display: Integrated local display
• Ambient temperature: 0–55 °C
• Humidity range: 0–95% (non‑condensing)
• IP rating: IP65
• Cable entry: M20
• Mounting option: Wall mount
• Material of construction (MOC): ABS plastic
• Dimensions: 152 x 358 x 90 mm (including sensor)
• Weight: < 2.5 kg (approx.)