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Carbon monoxide is one of the most dangerous gases in any industrial environment — not because it’s rare, but because it gives no warning. It’s colourless, odourless, and by the time a worker starts feeling the symptoms, exposure may already be at a harmful level. In facilities where CO is a known hazard — boiler rooms, underground mining operations, vehicle maintenance workshops, or any enclosed space with combustion — relying on fixed detection alone isn’t enough. Workers move. Risks move with them.
The IGD BELLMINI CO Portable Single Gas Detector solves that problem directly. It’s a personal clip-on monitor that detects carbon monoxide in the 1–1000 PPM range, worn by the individual worker so the protection moves with them throughout the shift.
What makes the BELLMINI CO worth serious consideration over the alternatives isn’t just the detection — it’s the combination of a 2-year battery life with no charging required, ATEX Zone 0 certification, and the BELLCONNECT app, which gives safety managers real-time oversight and auto-generated compliance documentation. No other portable CO detector in this class offers all three together.
IGD — International Gas Detectors — has spent decades focused exclusively on gas detection. The BELLMINI is the product of that experience: a device designed for the realities of industrial fieldwork, not just laboratory specifications.
Key Features
Triple Alarm — Audible, Visual & Vibration
When CO levels breach your set thresholds, the BELLMINI triggers all three alarm types simultaneously: a 100dB buzzer, multi-LED visual alerts, and a vibrating alarm. In high-noise environments like engine rooms or construction sites, a single alarm type isn’t reliable. The triple system ensures no one misses a warning. Alarm levels include Low, High, TWA (Time-Weighted Average), and STEL (Short-Term Exposure Limit) — covering both chronic and acute exposure monitoring requirements.
2-Year Battery Life — No Charging, No Gaps
The BELLMINI runs on a 3.6V lithium battery for a full 24 months without ever needing to be recharged. For operations managing a fleet of personal gas monitors, this is more significant than it sounds — no daily charging routine means no risk of a device being deployed with a flat battery. A built-in confidence beep periodically confirms the unit is live and operational without needing to check the screen.
IP68 Weatherproof & Dustproof
IP68 is full ingress protection — dust-tight and rated for water submersion. The BELLMINI CO is built for real site conditions: rain, dust, humidity, and the kind of rough handling that comes with daily field use. This isn’t a “handle with care” device.
BELLCONNECT App — Full Remote Control
Via Bluetooth Low Energy (BLE) or NFC tap within 10 metres, the BELLCONNECT app gives complete device control from a smartphone. Managers can remotely calibrate, bump test, adjust alarm setpoints, assign devices to named workers or specific zones, and download up to 200 event logs and 5,000 data records. Calibration certificates are generated automatically — no manual paperwork.
SAFE Mode Display
When no CO is detected, the LCD can display “SAFE” — a clear visual confirmation that’s particularly useful for confined space pre-entry checks. Workers get an immediate yes/no before stepping into an unknown atmosphere.
One-Button Operation
A single button handles all primary functions. No menu navigation, no sequence to remember — straightforward to operate even with gloves on or under time pressure.
Replaceable Sensor & Battery
Both the CO sensor and the battery are field-replaceable. When a sensor reaches end-of-life, the unit doesn’t need to go back to the supplier — a replacement sensor is swapped on-site, extending the device lifespan and keeping total cost of ownership low over time.
Fast 20-Second Response Time
The CO sensor responds within 20 seconds of exposure — fast enough to give a worker time to react and evacuate before reaching dangerous concentration levels.
Technical Specifications
Model: BELLMINI
Target Gas: Carbon Monoxide (CO)
Detection Range: 1–1000 PPM
Weight: 105g (with belt clip)
Display: FSTN LCD (1.6 inch)
Battery Life: 24 months (3.6V Lithium, size 2/3 AA)
IP Rating: IP68
Alarm Types: Visual (LED), Audible (100dB@10cm), Vibration — Low, High, TWA, STEL
Wireless: Bluetooth Low Energy (BLE), NFC
Response Time: 20 seconds
Data Logging: Up to 200 alarm events, 5,000 data logs
Humidity Range: 5%–95% RH (non-condensing)
Safety Approvals: ATEX, IECEx, KCs
App: BELLCONNECT (iOS & Android)
Benefits
Your workers stay protected even when they move. Fixed CO detectors protect a location. The BELLMINI protects the person — wherever they go on site.
Compliance documentation generates itself. The BELLCONNECT app produces calibration certificates and bump test records automatically. When an HSE audit comes around, your records are already there — timestamped, named, and ready.
No charging infrastructure needed. For facilities running 24/7 shifts, eliminating the charging cycle removes an entire layer of operational risk. There’s no shift handover problem where the night crew picks up a device that wasn’t charged.
Individual exposure records, not just device logs. By assigning each BELLMINI to a named worker through the app, exposure data becomes tied to a person. In the event of an incident or insurance claim, you have exact records of who was exposed, to what level, and for how long.
Lower long-term cost than disposable-sensor alternatives. Replaceable sensors mean the device body lasts years. Compared to units where sensor replacement means full device replacement, the cost difference across a team of 20–50 workers is substantial over a 3–5 year cycle.
Who It’s For
The Safety Manager at a Large Industrial Facility
You’re responsible for worker protection across a site with multiple hazard zones — boiler rooms, underground areas, vehicle bays. You need monitors that are always operational, easy to audit, and give you documented proof of compliance. The BELLMINI’s app-based management and auto-generated reports mean you spend less time chasing paperwork and more time on actual safety management.
The Maintenance Technician Working in Enclosed Spaces
You spend your shift moving between plant rooms, utility tunnels, and confined areas where CO from combustion equipment is a real and ongoing risk. You need a monitor that clips on, runs without attention, and gives you an unmistakable alarm if the atmosphere turns dangerous. The BELLMINI does exactly that — and the 2-year battery means it’s ready every day without any action from you.
The Procurement Manager Sourcing Monitors for a Large Team
You’re evaluating total cost of ownership, not just unit price. The BELLMINI’s replaceable sensor design, 2-year warranty, ATEX certification, and centralised app management stack up well against alternatives when you run the numbers across a multi-year deployment. The compliance documentation capability is also a meaningful risk reduction for your organisation.
Possible Applications
- Underground mining and tunnelling — CO from diesel machinery and blasting operations in confined underground environments
- Boiler rooms and plant rooms — Combustion equipment running continuously in enclosed spaces with limited ventilation
- Vehicle maintenance workshops — CO from running engines during servicing and testing in enclosed workshop bays
- Car parks and loading docks — High vehicle traffic in enclosed or semi-enclosed structures with CO accumulation risk
- Steel and metal processing plants — CO produced as a byproduct of smelting and furnace operations
- Confined space entry — Pre-entry atmosphere checks and continuous personal monitoring during maintenance tasks
- Waste processing and incineration facilities — CO generated during combustion and processing operations
- Fire investigation and emergency response — Post-incident atmosphere assessment in structures with residual CO
Trust & Certifications
ATEX: Ex II 1G Ex ia IIC T4 Ga ATEX is the European certification for equipment used in explosive atmospheres. The BELLMINI’s Zone 0 classification is the most stringent — it means the device is approved for use in locations where explosive gas is continuously present. If your site has any ATEX zone classification, this covers it at the highest level.
IECEx: Ex ia IIC T4 Ga The global equivalent of ATEX, accepted across more than 50 countries including Australia, the Middle East, and Asia-Pacific markets. For multinational operations or facilities supplying internationally, IECEx removes the need for separate country approvals in most jurisdictions.
KCs Certified South Korean industrial safety certification — required for deployment in Korean facilities and widely accepted across Asian industrial markets.
2-Year Manufacturer Warranty Standard manufacturer warranty covers the device for 24 months (sensor warranty is subject to individual sensor data). For a device deployed in demanding environments daily, this provides meaningful procurement confidence.
IGD — International Gas Detectors UK-based, Stockport. IGD’s entire business is gas detection — fixed and portable systems for industrial clients globally. This focus means the BELLMINI isn’t a sideline product; it’s the result of decades of specialist engineering in exactly this application.
Accessories & Variants
BELLCONNECT App (Free — iOS & Android) The essential companion for multi-device management — calibration, configuration, data logging, compliance reporting, and worker assignment all from one smartphone interface.
Alligator/Belt Clip (Included) Keeps the device positioned correctly in the breathing zone. Secure attachment to clothing, PPE vests, or equipment straps.
Replacement CO Sensor Modules Field-swappable when the sensor reaches end-of-life. Avoids full device replacement and keeps ongoing costs predictable.
Calibration Gas Kits Available separately for on-site bump testing and full calibration. The BELLCONNECT app guides the calibration process and logs the result automatically.
Available BELLMINI Variants
POR-GDIS-CO — Carbon Monoxide (CO) | 1–1000 PPM
POR-GDIS-COEX — Carbon Monoxide EX | 1–2000 PPM
POR-GDIS-CO-H — CO H2 Compensated | 1–500 PPM
POR-GDIS-H2S — Hydrogen Sulfide (H2S) | 0.1–100 PPM
POR-GDIS-O2 — Oxygen (O2) | 0.1–30% VOL
POR-GDIS-H2 — Hydrogen (H2) | 1–1000 PPM
POR-GDIS-NH3 — Ammonia (NH3) | 1–100 PPM
POR-GDIS-HCN — Hydrogen Cyanide (HCN) | 1–50 PPM
POR-GDIS-SO2 — Sulfur Dioxide (SO2) | 0.1–20 PPM
If CO monitoring is part of your site’s safety requirements — whether you’re equipping one technician or rolling out across an entire facility — the BELLMINI CO is worth a proper look.
Contact Alright Engineering Solutions to request a quote, arrange a demonstration, or discuss fleet pricing for larger deployments.
