GK-TOOLS FlashGuard EX – Portable Multi-Gas Detector for Propane (R290) and Oxygen (O₂) with ATEX Certification

The GK-TOOLS FlashGuard EX is a portable multi-gas detector specifically engineered for professionals in the HVACR and commercial/industrial refrigeration sectors. Thanks to dual continuous measurement, it simultaneously monitors the lower explosive limit (%LEL) of combustible gases such as Propane (R290) and the concentration of Oxygen (O₂) in %VOL.

It is an essential safety instrument for operating with complete peace of mind when working on systems charged with flammable hydrocarbons or on circuits running on CO₂ (R744), whose release into the atmosphere can quickly cause oxygen depletion and severe asphyxiation risks.

Compact, lightweight, and ultra-durable, FlashGuard EX features a colour TFT LCD display, an anti-static housing with IP65 protection rating, explosion-proof ATEX certification (II 2 G Ex ib IIC T4 Gb), and a triple alarm system (audible, visual, and vibration).

Key Features and Benefits

Combined R290 / O₂ Monitoring: Simultaneously detects combustible gases via catalytic combustion and oxygen levels using an electrochemical sensor.
Triple Safety Alarm: When preset thresholds are exceeded (Alarm 1 and Alarm 2), the device immediately alerts the operator via flashing LEDs, vibration, and an audible alarm (65 dB at 25 cm).
Intuitive Colour TFT Display: Simultaneous multi-gas screen, detailed single-gas view, and real-time trend curve to track concentration changes over time.
Rugged and ATEX-Certified: Ergonomic anti-static PC + TPU housing, dustproof and water-resistant (IP65), rated II 2 G Ex ib IIC T4 Gb for safe operation in hazardous areas.
Built-in LED Torch: Practical high-brightness LED light located on the top of the unit, quickly activated to inspect dark corners or technical compartments.
Data Logging & Alarm History: Internal memory with adjustable logging interval and ability to export historical data to a computer.
Extended Battery Life & USB Charging: Integrated 3.7 V lithium battery rechargeable via standard USB port (5 V DC), offering over 16 hours of continuous operation.

Ideal Applications

Maintenance, installation, and commissioning of refrigeration and heat pump systems running on flammable A3 refrigerants (e.g., R290 Propane, also LEL-compatible with R600a, R32, R454B, and Methane).
Safety inspections in machinery rooms, plant areas, or cold storage rooms using CO₂ (R744) refrigerants.
Pre-entry safety checks in confined spaces to prevent explosion hazards or oxygen-deficient atmospheres.

Technical Specifications

Parameter	Detail / Value
Detection principle	Catalytic combustion (combustible gases) / Electrochemical (O₂)
Sampling method	Diffusion
Combustible Gas measuring range	0 – 100% LEL (Resolution: 1% LEL)
Oxygen (O₂) measuring range	0 – 30% VOL (Resolution: 0.1% VOL)
Accuracy	≤ ±3% F.S.
Warm-up time	90 seconds
Selectable units	%LEL, %VOL, ppm, mg/m³
Display	Colour TFT LCD with white LED backlight
Alarms	Audible (65 dB at 25 cm), visual (LEDs), and vibration
Protection rating	IP65 (dust and water jet resistant)
Ex marking	II 2 G Ex ib IIC T4 Gb
Power supply	Built-in rechargeable lithium battery (3.7 V DC)
Charging interface	Standard USB interface (5 V DC supply, charging time ≤ 8 h)
Operating time	Over 16 hours (at 25 °C, no alarms, backlight off)
Operating temperature	-20 °C to +50 °C
Operating humidity	10 – 95% RH (non-condensing)
Dimensions	125.6 x 66.2 x 46.6 mm (L x W x H)
Weight	Approx. 200 g
Housing material	High-durability anti-static PC + TPU

Package Contents

1x GK-TOOLS FlashGuard EX multi-gas detector
1x Stainless steel belt clip
1x Calibration cap
1x Multi-language user manual (Italian / English)

EAN	n.d.
Cylinder/Container size	Non Applicabile
Package weight	1 Kg.
Item number	F-AF-SC-EX-R290-02
Packaging	Cardboard box

Instruction manual	Signup or Signin for Download

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