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Gravity MEA

RK GX-3R

– World’s Smallest & Lightest 4-Gas Detector for “Breathing‐Zone” MonitoringThe GX-3R is the world’s smallest and lightest four-gas detector, weighing just 100 g (3.52 oz) and measuring 58× 65× 26 mm, making it perfect for placement in workers’ breathing zones. It provides simultaneous detection of LEL (combustibles), O₂, CO, and H₂S using advanced micro-sensors with enhanced resistance to poisoning, long-life battery, field-replaceable filters, and robust IP66/IP68 durability. Ideal for confined space entry, utility work, and industrial safety in challenging environments.Enquire Now 

Product Highlights




    Features

    • Ultra-compact & lightweight design — just 100 g
    • Simultaneous detection of 4 gases: LEL, O₂, CO (incl. H₂‑comp), H₂S
    • Dual-filament LEL sensor – enhanced resistance to silicone poisoning
    • Extended-life O₂ sensor – 3 to 5 years
    • 25 h battery runtime, with optional extended 40 h mode
    • Non‑compliance indicator – flashing LEDs for bump or calibration reminders
    • Triple alarm system: audible (95 dB), visual, vibration
    • Field-serviceable filters & sensors, two-button interface
    • Robust IP66/68 housing – water and dust resistant

    Specifications

    Parameter Specification
    Gases Detected Combustibles (%LEL), O₂, CO, H₂S
    Detection Ranges LEL: 0–100%
    O₂: 0–40 % vol
    CO: 0–2,000 ppm
    H₂S: 0–200 ppm
    Resolution LEL: 1%
    O₂: 0.1% vol
    CO: 1 ppm (<500), 0.1 ppm (<200)
    Response Time (T₉₀) ≤ 30 s
    Battery Rechargeable Li-ion; 25 h (3 h charge); extended 40 h option
    Alarms Audible (95 dB), visual LEDs, vibration; 3 adjustable thresholds
    Display Auto-backlit LCD – numerical readings & status icons
    Ingress Rating IP66/68 – water/dust resistant to 2 m for 1 h
    Operating Temp Continuous: −20 to +50 °C; Temporary: −40 to +60 °C
    Dimensions 58 × 65 × 26 mm (2.2″ × 2.55″ × 1.02″)
    Weight 100 g (3.52 oz)
    Certifications ATEX, IECEx, CSA C/US, Japan Ex, RoHS

    ⚙️ Sensor & Component Breakdown

    • Dual‐filament catalytic LEL sensor – resistant to poisoning
    • Electrochemical O₂ sensor – long 3–5 year lifespan
    • Combo CO/H₂S sensor – field-replaceable, H₂-compensated option
    • Filters – dust, H₂S removal filters to protect sensors
    • IR data port – supports 3,600 events / 300 h log

    🧪 Accessories & Add‑Ons

    • RP‑3R Sample‑Draw Pump
    • SDM‑3R Calibration/Docking Station
    • IR/USB data download cable / software
    • Replacement filters and sensors
    • Calibration gas kits and regulators
    • USB or AC charging adapter

    📌 Applications

    • Personal monitoring in the breathing zone
    • Confined space entry (manholes, tanks, vessels)
    • Petrochemical, oil & gas, utilities
    • Water/wastewater facilities
    • Firefighting & emergency services
    • Construction and maintenance sectors

    Certifications & Compliance

    Parameter Specification
    Gases Detected Combustibles (%LEL), O₂, CO, H₂S
    Detection Ranges LEL: 0–100%
    O₂: 0–40 % vol
    CO: 0–2,000 ppm
    H₂S: 0–200 ppm
    Resolution LEL: 1%
    O₂: 0.1% vol
    CO: 1 ppm (<500), 0.1 ppm (<200)
    Response Time (T₉₀) ≤ 30 s
    Battery Rechargeable Li-ion; 25 h (3 h charge); extended 40 h option
    Alarms Audible (95 dB), visual LEDs, vibration; 3 adjustable thresholds
    Display Auto-backlit LCD – numerical readings & status icons
    Ingress Rating IP66/68 – water/dust resistant to 2 m for 1 h
    Operating Temp Continuous: −20 to +50 °C; Temporary: −40 to +60 °C
    Dimensions 58 × 65 × 26 mm (2.2″ × 2.55″ × 1.02″)
    Weight 100 g (3.52 oz)
    Certifications ATEX, IECEx, CSA C/US, Japan Ex, RoHS

    ⚙️ Sensor & Component Breakdown

    • Dual‐filament catalytic LEL sensor – resistant to poisoning
    • Electrochemical O₂ sensor – long 3–5 year lifespan
    • Combo CO/H₂S sensor – field-replaceable, H₂-compensated option
    • Filters – dust, H₂S removal filters to protect sensors
    • IR data port – supports 3,600 events / 300 h log

    🧪 Accessories & Add‑Ons

    • RP‑3R Sample‑Draw Pump
    • SDM‑3R Calibration/Docking Station
    • IR/USB data download cable / software
    • Replacement filters and sensors
    • Calibration gas kits and regulators
    • USB or AC charging adapter

    📌 Applications

    • Personal monitoring in the breathing zone
    • Confined space entry (manholes, tanks, vessels)
    • Petrochemical, oil & gas, utilities
    • Water/wastewater facilities
    • Firefighting & emergency services
    • Construction and maintenance sectors