Cart (
Overview
Ozone is one of those gases that’s easy to underestimate precisely because most people associate it with air purification rather than industrial hazard. But in workplace concentrations — around welding operations, UV disinfection systems, water treatment facilities, and cold storage environments — O3 becomes a serious respiratory irritant well before it reaches levels that trigger a noticeable smell. The threshold at which ozone begins causing health damage is lower than most workers expect, and the margin between “detectable” and “dangerous” is narrow.
The IGD BELLMINI O3 Portable Single Gas Detector is built for exactly this situation. It’s a personal clip-on monitor that continuously tracks ozone concentration in the 0–5 PPM range — the range that matters most for occupational health protection — and delivers an immediate triple alarm the moment levels approach unsafe thresholds.
What sets the BELLMINI O3 apart from other portable ozone detectors in this category is the combination of a genuine 2-year battery life, IP68 weatherproofing, and the BELLCONNECT app — giving safety managers remote calibration, data logging, and compliance documentation without any additional hardware. IGD (International Gas Detectors), the UK-based manufacturer behind the BELLMINI, has spent decades engineering gas detection solutions for industrial environments. This isn’t a repurposed consumer sensor; it’s a purpose-built industrial monitor.
Key Features
Dedicated Ozone Detection — 0 to 5 PPM
The BELLMINI O3 is configured specifically for ozone monitoring across the 0–5 PPM range. The OSHA permissible exposure limit for ozone is 0.1 PPM as an 8-hour TWA — meaning this detector is calibrated to catch problems well before they escalate. In environments like UV disinfection rooms, ozone generators, and electrochemical processes, the ability to detect at low concentrations is what makes personal monitoring meaningful rather than just a compliance checkbox.
Triple Alarm System — Audible, Visual and Vibration
When O3 levels breach set thresholds, all three alarm types activate simultaneously: a 100dB audible buzzer, multi-LED visual alerts, and a vibrating alarm. In environments where workers wear hearing protection or are focused on a task, a single alarm channel isn’t sufficient. The triple system ensures the warning reaches the worker regardless of conditions. Alarm levels cover Low, High, TWA, and STEL.
2-Year Battery Life — No Charging Required
A 3.6V lithium battery powers the device for a full 24 months without recharging. For safety managers running teams across multiple shifts, this removes the daily charging logistics entirely. There’s no risk of a monitor going into a shift with a flat battery, and no charging infrastructure to maintain. A built-in confidence beep periodically confirms the unit is live and running.
IP68 Weatherproof and Dustproof Rating
IP68 is the highest ingress protection rating available — fully dust-tight and submersion-rated. Ozone is most commonly encountered in industrial environments that are wet, humid, or dusty: water treatment plants, food processing facilities, cold storage areas. The BELLMINI’s IP68 housing means the detector keeps working in exactly those conditions without needing special handling.
BELLCONNECT Bluetooth App
Via Bluetooth Low Energy or NFC tap within 10 metres, the BELLCONNECT app provides full remote management: calibration, bump testing, alarm setpoint adjustment, device-to-worker assignment, and data downloads. Up to 200 event logs and 5,000 data records can be accessed directly from a smartphone. Calibration certificates are generated automatically — no manual paperwork, no separate logging system required.
SAFE Mode Display
When no ozone is detected above the alarm threshold, the LCD screen can display “SAFE” — a simple, unambiguous visual confirmation that’s particularly useful before entering a room where ozone-generating equipment has been running. Pre-entry checks take seconds rather than requiring a separate instrument.
One-Button Operation
All primary device functions are handled through a single button. No menus, no sequences to remember — the device is operable with gloves on and in situations where attention needs to stay on the work rather than the monitor.
Replaceable Sensor and Battery
Both the O3 sensor and the battery are field-replaceable on-site. When the ozone sensor reaches end-of-life, it’s swapped directly without returning the unit. This extends the usable life of the device body significantly and keeps long-term per-unit costs predictable across a multi-year deployment.
Technical Specifications
Model: BELLMINI
Target Gas: Ozone (O3)
Detection Range: 0–5 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 (Toxic Gas)
Data Logging: Up to 200 alarm events, 5,000 data logs
Humidity Range: 5% to 95% RH (non-condensing)
Safety Approvals: ATEX, IECEx, KCs
App: BELLCONNECT (iOS and Android)
Benefits
Protection at the individual level, not just the room level. Fixed ozone monitors protect a specific location. The BELLMINI O3 protects the worker — in every area they move through during a shift, including transitional zones where ozone can accumulate after equipment runs.
Compliance records that generate themselves. The BELLCONNECT app produces timestamped calibration certificates and bump test logs automatically. When an HSE audit or regulatory inspection arrives, the documentation is already complete and attributed to the correct device and worker.
No charging cycle to manage. Over a 24-month battery life, a fleet of 30 BELLMINI units saves hundreds of hours of charging management time — and removes the single most common reason a personal monitor gets left behind: a dead battery at shift start.
Exposure data tied to individuals. Worker assignment through the app links ozone exposure records to a named person rather than a device serial number. In the event of a health incident, compensation claim, or regulatory inquiry, the records are specific, defensible, and already stored.
Lower total cost over a deployment cycle. Field-replaceable sensors mean the device body continues in service across multiple sensor lifetimes. For procurement managers comparing 5-year total cost of ownership, this is a meaningful difference against competitors whose sensor replacement requires full unit replacement.
Who It’s For
The HSE Manager at a Water Treatment or Industrial Facility
You’re responsible for worker protection in an environment where ozone is used for disinfection or oxidation processes. You need monitors that are always operational, easy to calibrate, and generate the compliance documentation your organisation needs without adding to your team’s administrative load. The BELLMINI O3 and BELLCONNECT app handle the monitoring, logging, and reporting in one system.
The Technician Working Around UV or Ozone Generating Equipment
You service, maintain, or operate equipment that generates ozone as a byproduct or as a deliberate process output. You need a personal monitor that clips on at the start of the shift and alerts you immediately if ozone levels climb — without requiring you to manage it, charge it, or think about it during the workday. The BELLMINI’s single-button operation and 2-year battery are exactly what that situation requires.
The Procurement Officer Specifying Personal Monitors for a Team
You’re building a business case for a personal gas monitor deployment across a team of 15–50 workers. You need ATEX certification for your hazardous area classification, a long battery life to avoid charging logistics, a replaceable sensor to control long-term cost, and an app-based management system to satisfy your HSE team’s compliance requirements. The BELLMINI O3 addresses all four requirements in one unit.
Possible Applications
- Water and wastewater treatment plants — Ozone used as a primary disinfectant in treatment processes; worker exposure risk during equipment operation and maintenance
- UV disinfection facilities — UV systems produce ozone as a byproduct; enclosed equipment rooms require continuous personal monitoring
- Food processing and cold storage — Ozone used for surface sterilisation and odour control in enclosed refrigerated environments
- Pharmaceutical manufacturing — Ozone used for clean-room sterilisation and water purification systems requiring controlled atmosphere monitoring
- Welding and plasma cutting operations — Arc welding processes produce ozone; enclosed workshop environments with inadequate ventilation create accumulation risk
- Semiconductor fabrication — Ozone used in surface cleaning and oxidation processes in controlled manufacturing environments
- Pulp and paper bleaching — Ozone bleaching processes in paper mills require continuous personal protection monitoring
- Air purification system maintenance — Technicians servicing industrial ozone generators and air treatment systems in enclosed spaces
Trust and Certifications
ATEX: Ex II 1G Ex ia IIC T4 Ga
ATEX is the European standard for equipment deployed in explosive atmospheres. Zone 0 classification — the most stringent level — confirms the BELLMINI O3 is approved for continuous use in locations where explosive gas is present. If your facility carries any ATEX zone classification, this certification covers it at the highest level.
IECEx: Ex ia IIC T4 Ga
The internationally recognised equivalent of ATEX, accepted in over 50 countries including Australia, the Middle East, and across Asia-Pacific. For organisations operating across multiple countries or supplying into international markets, IECEx removes the need for separate national certifications in most jurisdictions.
KCs Certified
Korean industrial safety certification required for deployment in South Korean facilities. Also accepted as a recognised approval in a number of other Asian industrial markets.
2-Year Manufacturer Warranty
Standard device warranty for 24 months from purchase. Sensor warranty is subject to individual sensor data. For a device deployed in daily industrial use, a 2-year warranty provides meaningful assurance at the procurement stage.
IGD — International Gas Detectors
Based in Stockport, UK, IGD’s entire engineering focus is gas detection — both fixed and portable systems for industrial clients worldwide. The BELLMINI is not an adapted consumer product; it’s the result of decades of specialist development by a company for whom gas detection is the core business, not a product line addition.
Accessories and Variants
BELLCONNECT App (Free — iOS and Android)
Essential for teams managing multiple devices — calibration, bump testing, configuration, data logging, compliance reporting, and worker or location assignment from a single smartphone interface.
Alligator/Belt Clip (Included)
Keeps the detector correctly positioned in the breathing zone during work. Attaches securely to clothing, PPE vests, harnesses, or equipment straps.
Replacement O3 Sensor Modules
Field-swappable when the ozone sensor reaches end-of-life. Extends device lifespan and avoids full unit replacement costs.
Calibration Gas Kits
Available separately for on-site bump testing and full calibration. The BELLCONNECT app guides the process and generates a timestamped calibration certificate automatically.
Available BELLMINI Variants
POR-GDIS-O3 — Ozone (O3) | 0–5 PPM
POR-GDIS-CO — Carbon Monoxide (CO) | 1–1000 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
POR-GDIS-COEX — Carbon Monoxide EX | 1–2000 PPM
POR-GDIS-NO — Nitric Oxide (NO) | 0–250 PPM
Get in Touch
If ozone monitoring is part of your site’s safety requirements — whether you’re equipping a small maintenance team or standardising personal gas detection across a larger operation — the BELLMINI O3 is worth evaluating against what you’re currently using.
Contact Alright Engineering Solutions to request a formal quote, arrange a product demonstration, or discuss volume pricing for team deployments.
📍 3791 Jalan Bukit Merah #06-01, E-Centre @ Redhill, Singapore 159471
