Gas detector XgardIQ

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Product overview
The XgardIQ is an intelligent fixed gas detector and transmitter certified to SIL2. It supports multiple sensor technologies (catalytic, electrochemical, infrared, MEMS) and is available with a remote sensor option and a universal transmitter for flexible site configuration. OLED display and +Ve safety indicator provide clear status information in low light environments.

Key features

• Universal transmitter compatible with Crowcon sensor modules
• Auto-sense and auto-configure functions for quick commissioning
• OLED main display (128 x 64) and multi-colour LEDs including +Ve safety LED
• Non-intrusive calibration and Smart Bump / Speedy Bump test functions
• Event logging for alarms, faults and maintenance (on-screen and downloadable)
• Optional relays, HART® communications and RS-485 Modbus RTU

Easy & Safe to Use (highlights)

• Clear OLED readout and LED indicators for quick status checks
• Non-intrusive calibration avoids need for special permits or tools
• Positive safety indication (+Ve) for rapid operation confirmation
• Remote sensor option to improve detection coverage
• Event log for service history and diagnostics

Simple Installation & Maintenance (highlights)

• Universal transmitter with automatic 4–20 mA sink/source detection
• Auto-configure uploads gas type, range, units and alarm levels when a sensor module is fitted
• Single-handed sensor replacement and simple mounting options
• Optional relay outputs and digital communications for integration

Reliable (highlights)

• SIL2 functional safety certification
• Smart Bump and Speedy Bump test routines with reminders
• Calibration reminders and user-selectable full-scale ranges

Gases and Ranges
Ammonia (NH3) | Electrochemical | 0–50 ppm, 0–100 ppm, 0–1000 ppm | -20 to +40 °C
Carbon Monoxide (CO) | Electrochemical | 0–250 ppm, 0–500 ppm, 0–1000 ppm | -30 to +50 °C
Hydrogen Sulphide (H2S) | Electrochemical | 0–25, 0–50, 0–100, 0–200 ppm | -40 to +70 °C (sensor dependent)
Oxygen (O2) | Electrochemical | 0–25% Vol. | -20 to +50 °C
Flammable gases* | MEMS / Catalytic / Infra-Red | 0–100% LEL | -40 to +75 °C (variant dependent)
Typical catalytic/IR/MEMS options: Acetylene, Benzene, Ethanol (IR), Heptane, Hydrogen, LPG, Methane, Pentane, Propane

Technical specifications

• Size: H278 x W140 x D89 mm
• Weight: 4.1 kg
• Enclosure: 316 stainless steel
• Ingress protection: IP66
• Connections: three M20 or ½” NPT entries (certified removable plugs on some entries)
• Power: 14–30 VDC, less than 4 W
• Display: OLED 128 x 64 pixels; LEDs amber/red/green and blue +Ve
• Outputs: 4–20 mA sink or source (Auto-Sense/manual); RS-485 Modbus RTU; HART 7 over 4–20 mA (optional)
• Optional relays: Alarm 1, Alarm 2, Fault — SPCO 5 A, 230 Vac, configurable
• Event logging: on-screen and downloadable to PC
• Operating temperature: ATEX/IECEx -40 °C to +75 °C (FM variants to +70 °C); sensor module temperatures vary
• Humidity: 0–95% RH non-condensing
• Repeatability: ±2% FSD; Zero drift: ±2% FSD per year max
• Approvals: ATEX, IECEx, FM (where applicable), CE, INMETRO, CNEx and others depending on configuration
• Functional safety: SIL2 certified (IEC 61508, EN 50402)