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Overview
Most industrial hazard environments don’t present just one gas risk at a time. A confined space entry in a petrochemical facility might involve oxygen deficiency, combustible gas accumulation, carbon monoxide from nearby equipment, and hydrogen sulfide from process streams — all simultaneously. Equipping workers with four separate single-gas monitors isn’t practical. Relying on a fixed detection system that doesn’t move with the worker isn’t adequate. What’s needed is a single wearable device that monitors all four hazard categories continuously, alerting the worker the moment any one of them breaches a safe threshold.
The IGD BELL LITE Multi Gas Detector does exactly that. It simultaneously monitors oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), and combustible gases (LEL) in one compact 170g device — providing comprehensive personal atmospheric protection across the four gas categories that cover the majority of industrial hazard scenarios.
Manufactured by International Gas Detectors (IGD), a UK-based specialist with decades of experience exclusively in gas detection, the BELL LITE brings together ATEX certification, a rechargeable battery with up to 40 hours of runtime, a backlit LCD display, and the BELLCONNECT Bluetooth app in a device designed for the full demands of industrial field work. What sets it apart from comparable multi-gas monitors is the combination of IR sensor capability for CO and LEL detection — providing more stable, longer-life measurements for those gases — alongside the BELLCONNECT app’s comprehensive compliance documentation and fleet management capability.
Key Features
Simultaneous 4-Gas Monitoring
The BELL LITE monitors oxygen (0–30% VOL), carbon monoxide (0–1000 PPM), hydrogen sulfide (0–100 PPM), and combustible gases (0–100% LEL) simultaneously and continuously. All four readings are displayed on the LCD screen in real time. In confined space entry, oil and gas operations, and industrial maintenance environments, having all four hazard categories covered by a single personal device is the practical baseline for comprehensive atmospheric protection.
IR Sensor Technology for CO and LEL
The BELL LITE incorporates infrared (IR) sensor options for carbon monoxide (CO-IR: 0–50,000 PPM range) and combustible gas (CH4-IR: 0–100% LEL) detection. IR sensors offer key advantages over electrochemical equivalents in demanding environments: they are not depleted by exposure to the target gas, have longer operational lifespans, and are less susceptible to poisoning from cross-interference gases. For facilities where CO or LEL monitoring reliability is critical, the IR sensor option provides a more robust long-term detection solution.
Multi-Alarm System — Audible, Visual, Vibration and Multi
When any monitored gas breaches a configured threshold, the BELL LITE triggers a 100dB audible buzzer, multi-LED visual alerts, and a vibrating alarm simultaneously. A “Multi” alarm mode provides additional alert combinations for complex hazard scenarios. Alarm levels cover Low, High, TWA, and STEL for each gas channel — ensuring both short-term peak exposures and sustained low-level exposures are flagged according to occupational health limits.
40-Hour Rechargeable Battery
A 3.7V 1500mAh lithium-ion rechargeable battery provides up to 40 hours of continuous runtime — covering multiple shifts from a single charge. The IR sensor variant provides over 200 hours of runtime, making it particularly well-suited to extended deployment scenarios or remote locations where charging opportunities are limited. The battery is included in the unit’s 170g weight with belt clips and 93g with 4-gas configuration.
IP68 Weatherproof and Dustproof
Full dust ingress protection and water submersion rating. Multi-gas monitors are most needed in exactly the environments that are hardest on equipment — confined spaces, chemical plants, refineries, and mining operations. The BELL LITE’s IP68 rating ensures continuous reliable operation in wet, dusty, and chemically challenging field conditions without protective enclosures.
BELLCONNECT Bluetooth App
Via Bluetooth Low Energy or NFC tap, the BELLCONNECT app provides complete remote device management: calibration, bump testing, alarm setpoint adjustment for all four gas channels, device-to-worker assignment, and access to up to 750 alarm events and 4000 data log readings. Calibration certificates are generated automatically. For HSE teams managing confined space entry programmes or multi-site industrial operations, this centralised management capability significantly reduces compliance administration across a fleet.
Backlit FSTN LCD Display
The 40x20mm backlit display shows real-time readings for all monitored gases simultaneously. In low-light environments — underground work, tank entry, night shifts — the backlit display allows workers to check atmospheric conditions without additional lighting equipment. Clear, immediate readability is a practical field requirement that the BELL LITE addresses directly.
Replaceable Sensors
Individual gas sensors are field-replaceable without returning the unit. When a specific sensor reaches end-of-life — which varies by gas type and exposure history — only that sensor is replaced, not the entire device. For operations managing a multi-gas detector fleet over a 5–7 year period, this modular approach produces a significantly lower total cost of ownership than full-unit-replacement alternatives.
Technical Specifications
Model: BELL LITE
Target Gases: O2, CO, H2S, LEL (simultaneous)
Detection Ranges: O2: 0–30% VOL | CO: 0–1000 PPM | H2S: 0–100 PPM | LEL: 0–100% LEL
IR Options: CO-IR: 0–50,000 PPM | CH4-IR: 0–100% LEL (over 200hr battery)
Weight: 170g (with belt clips, 5-gas) / 93g (4-gas configuration)
Display: FSTN LCD 40x20mm with backlight
Battery Life: Up to 40 hours (Li-ion 3.7V 1500mAh) | Over 200 hours (IR variant)
IP Rating: IP68
Alarm Types: Visual (LED), Audible (100dB@10cm), Vibration, Multi — Low, High, TWA, STEL
Wireless: Bluetooth Low Energy (BLE), NFC
Data Logging: Up to 750 alarm events, 4000 data log readings
Humidity Range: 5% to 95% RH (non-condensing)
Safety Approvals: ATEX, IECEx, KCs, NRTL, Class1 Div1 Groups A,B,C,D
App: BELLCONNECT (iOS and Android)
Benefits
One device covers the four gas hazards that matter most in the majority of industrial scenarios. Instead of managing multiple single-gas monitors per worker, the BELL LITE provides O2, CO, H2S, and LEL coverage in a single clip-on device — simplifying equipment management, reducing per-worker cost, and eliminating the risk of a worker being protected against some gases but not others.
IR sensor options for CO and LEL deliver more reliable long-term detection. Electrochemical CO sensors and catalytic bead LEL sensors both have known limitations in certain environments. The IR sensor variants address those limitations directly — particularly relevant for facilities where sensor poisoning, high CO concentrations, or demanding LEL environments have caused reliability issues with conventional sensor technologies.
Compliance documentation without manual effort. The BELLCONNECT app generates timestamped calibration certificates and bump test records automatically across all four gas channels. For confined space entry programmes, permit-to-work systems, and HSE audits, that documentation is always current and correctly attributed without adding to the safety team’s administrative workload.
40-hour runtime covers extended operations without mid-shift charging. Unlike 8–12 hour battery alternatives that require daily charging and carry risk of mid-shift depletion, the BELL LITE’s 40-hour runtime covers multiple consecutive shifts from a single charge — simplifying fleet management and eliminating the operational risk of a depleted device.
Lower total cost of ownership through modular sensor replacement. Individual sensor replacement rather than full unit replacement produces a significantly better cost position over a 5–7 year fleet deployment — particularly relevant for operations managing 20–100 multi-gas detectors across a site or multiple sites.
Who It’s For
The Confined Space Entry Supervisor on Industrial and Civil Projects
You’re responsible for ensuring every worker entering a confined space carries a calibrated multi-gas monitor, that the pre-entry atmosphere has been assessed, and that continuous monitoring occurs during work. You need a device that covers all four atmospheric hazards, generates bump test and calibration records automatically, and gives you a complete data log for every entry. The BELL LITE and BELLCONNECT app support that entire workflow from pre-entry through to post-shift documentation.
The HSE Manager at an Oil and Gas or Petrochemical Facility
Your site has multiple hazard zones — process units with combustible gas risk, sour service areas with H2S, confined spaces with oxygen deficiency risk, and areas with CO from combustion equipment. Standardising on a 4-gas personal monitor means every worker is covered for the full hazard profile of any area they might enter during a shift. The BELL LITE’s ATEX Zone 0 certification and BELLCONNECT fleet management make it a fit for that site-wide standardisation requirement.
The Procurement Manager Specifying Multi-Gas Detection for a Large Workforce
You’re building a business case for a multi-gas detector deployment across 50–200 workers. The specification requirements are ATEX certification, IP68 durability, sufficient battery life to avoid daily charging logistics, modular sensor replacement to control long-term costs, and app-based compliance management to satisfy your HSE team. The BELL LITE addresses all five requirements — with the additional advantage of IR sensor options for facilities where conventional sensor reliability has been an issue.
Possible Applications
- Confined space entry — industrial and civil — Tanks, vessels, manholes, vaults, and underground structures requiring pre-entry and continuous 4-gas atmospheric monitoring
- Oil and gas production and refining — Process units, sour gas handling, and maintenance operations requiring simultaneous LEL, H2S, CO, and O2 monitoring
- Wastewater treatment — Treatment tanks, pump stations, and sewer networks where H2S, CO, O2 deficiency, and combustible gas risks coexist
- Mining operations — Underground environments requiring continuous multi-gas monitoring for CO from diesel equipment, O2 levels, combustible gas, and H2S
- Chemical and petrochemical plants — Process maintenance, shutdown work, and confined space entry across facilities with multiple simultaneous gas hazards
- Utilities and infrastructure maintenance — Gas distribution networks, substations, and civil infrastructure maintenance with varied atmospheric hazard profiles
- Marine and offshore — Ship hold inspection, offshore platform maintenance, and cargo vessel confined space work with complex atmospheric hazard profiles
- Fire and emergency services — Post-incident atmosphere assessment and structural entry where multiple gas hazards may be present simultaneously
Trust and Certifications
ATEX: Ex II 1G Ex ia IIC T4 Ga
ATEX is the European standard for equipment used in explosive atmospheres. Zone 0 classification — the most stringent level — confirms the BELL LITE is approved for continuous use in locations where explosive gas is present continuously. For oil and gas facilities, chemical plants, and any site with a formal ATEX zone designation, this covers the highest hazard classification.
IECEx: Ex ia IIC T4 Ga
The globally accepted equivalent of ATEX, recognised in over 50 countries including Australia, the Middle East, and Asia-Pacific. For multinational operations, IECEx removes the need for separate national certifications in most jurisdictions — a meaningful procurement simplification for global industrial groups.
KCs Certified
Korean industrial safety certification required for deployment in South Korean facilities, accepted across a number of other Asian markets.
NRTL — Class 1, Division 1, Groups A, B, C, D
North American hazardous location certification — required for deployment in US and Canadian industrial facilities operating under NEC/CEC hazardous area classifications. Class 1, Division 1, Groups A, B, C, D covers the full range of common industrial flammable gas environments. For operations in North America or facilities supplying North American clients, NRTL certification is a procurement requirement that the BELL LITE satisfies directly.
2-Year Manufacturer Warranty
Standard device warranty for 2 years, excluding battery and sensors. Sensor warranty terms are subject to individual sensor data. For a device deployed in daily multi-hazard industrial environments, a 2-year device warranty provides meaningful procurement-stage assurance.
IGD — International Gas Detectors
Based in Stockport, UK, IGD’s entire engineering focus is gas detection — fixed and portable systems for industrial clients globally. The BELL LITE is the product of decades of specialist development by a company for whom multi-gas personal protection is a core engineering discipline, not a peripheral product category.
Accessories and Variants
BELLCONNECT App (Free — iOS and Android)
Essential for teams managing multi-gas detector fleets — calibration, bump testing, alarm configuration across all gas channels, data logging, compliance reporting, and individual worker assignment from one smartphone interface.
Belt Clips and Carrying Options (Included)
Multiple attachment options are included for secure positioning in the breathing zone during different work activities — confined space entry, general field work, and vehicle operations.
Replacement Sensor Modules
Individual sensors are field-replaceable per gas channel. Electrochemical sensors for O2, CO, and H2S available alongside IR sensor options for CO and LEL — choose the sensor technology that best suits your specific environment and reliability requirements.
Calibration Gas Kits
Available separately for on-site bump testing and full 4-gas calibration. The BELLCONNECT app guides the process for each gas channel and generates a complete calibration certificate automatically on completion.
Available BELL LITE Configurations
Standard 4-Gas — O2, CO (electrochemical), H2S, LEL (catalytic bead)
IR CO Variant — O2, CO-IR (0–50,000 PPM), H2S, LEL
IR LEL Variant — O2, CO, H2S, CH4-IR (over 200hr battery runtime)
POR-GDIS-H2S — Hydrogen Sulfide (H2S) Single Gas | 0.1–100 PPM
POR-GDIS-CO — Carbon Monoxide (CO) Single Gas | 1–1000 PPM
POR-GDIS-O2 — Oxygen (O2) Single Gas | 0.1–30% VOL
POR-GDIS-NH3 — Ammonia (NH3) Single Gas | 1–100 PPM
Get in Touch
If your site’s hazard profile requires simultaneous monitoring of multiple gas categories — whether for confined space entry programmes, oil and gas operations, or industrial maintenance work — the BELL LITE Multi Gas Detector is worth a detailed evaluation against your current personal protection setup.
Contact Alright Engineering Solutions to request a formal quote, arrange a product demonstration, or discuss configuration options and volume pricing for fleet deployments.
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