Honeywell BW GasAlertMicro 5

The Honeywell BW GasAlertMicro 5 provides broad, simultaneous coverage of multiple atmospheric hazards in one handheld detector. It monitors and displays up to five gases at once, covering oxygen deficiency or enrichment, combustible gases and a wide selection of toxic gases. Three core versions – a standard toxic gas model, a PID model for volatile organic compounds and an IR model for carbon dioxide – allow configuration for different processes without issuing multiple instrument types.

High measurement ranges for key gases, including combustible gases and CO2, support use in demanding applications such as confined space entry, process areas and storage environments. Correction factor libraries for LEL and PID measurements improve confidence when detecting different gas types within the same platform.

The detector withstands tough site conditions. A water-resistant enclosure with IP65/IP66 ingress protection resists dust and water jets, while an integral concussion-proof boot improves impact resistance during everyday handling, transport and use. A wide operating temperature range, including dedicated limits for PID variants, and tolerance of high humidity levels support reliable operation across sectors such as wastewater treatment, steel and iron production, construction, pulp and paper, food and beverage, commercial buildings, energy and manufacturing.

The compact form factor is smaller and up to 50% lighter than many comparable multi-gas detectors, particularly PID models. This reduced size and weight enhance wearability for confined space entry, vertical access and long-duration tasks, supporting policy compliance and reducing user fatigue.

The Honeywell BW GasAlertMicro 5 is engineered for quick adoption by mixed-experience workforces. A large LCD with user-selectable backlight delivers clear readings in low light, while a simple, icon-based interface aids interpretation across different language groups. Multiple display and backlight modes include automatic low-light activation, alarm-only indication and stealth mode for environments where visible alarm activity must be controlled.

The detector continuously displays real-time gas concentrations, with TWA, STEL and maximum exposure values available on demand. The optional SAFE display mode allows supervisors to tailor how normal and alarm conditions are presented, supporting structured work control in sensitive or high-consequence areas.

To suit different tasks and access conditions, the Honeywell BW GasAlertMicro 5 supports both diffusion and pumped operation. An optional integral motorised pump enables remote sampling up to 20 m, allowing assessment of tanks, pits and other confined spaces from a safe vantage point before entry. Fast-pump mode accelerates sample draw to improve response when moving between locations, and the detector switches quickly between pumped and diffusion operation as job requirements change.

Each detector is supplied with a sensor compartment cover for diffusion use, a calibration adaptor and hose, plus boot and AA batteries. A wide choice of accessories, including belt holsters, confined space kits, sampling probes, chargers and spare power supplies, helps standardise equipment across varied applications while keeping part numbers under control.

The detector offers two power strategies to align with site preferences: three AA alkaline cells or a rechargeable hot-swappable battery pack. Typical runtime of around 20 hours supports extended and back-to-back shifts, helping to minimise unplanned downtime for charging or battery changes. Sleep mode and automatic backlight management further optimise battery life in less demanding conditions.

To support rapid response to hazardous conditions, the Honeywell BW GasAlertMicro 5 combines three alarm channels: a 95 dB audible alarm, bright wide-angled visual alarm bars and an internal vibrating alarm for high-noise areas or where hearing protection is used. Four alarm levels – Low, High, TWA and STEL – provide structured exposure control, while an OL (over limit) indication flags severe incidents. A latching alarm option keeps alarms active until acknowledged, helping ensure that events are recognised, communicated and recorded.

The detector is designed to streamline routine safety tasks. A full function self-test on start-up verifies sensors, battery status, internal circuitry and audible/visual alarms, with continuous battery testing during use. O2 auto-calibration at start-up supports reliable oxygen readings. Simple automatic calibration procedures are compatible with the BW MicroDock II automatic test and calibration station, enabling efficient bump testing and calibration of larger instrument fleets.

Advanced user options include confidence beep, configurable daily bump test prompts, calibration-due lockout, user-settable calibration gas levels and selectable STEL intervals and TWA calculation methods. Passcode protection prevents unauthorised changes to alarm, configuration and calibration settings, helping maintain consistent standards across shifts, contractors and sites.

Onboard datalogging captures and stores gas exposure information, with capacity to support extended logging durations at defined intervals. Recorded TWA, STEL and maximum exposure values can be recalled to support incident investigation, trend analysis and compliance reporting. Selectable ppm and high-resolution options for certain toxic gases provide more granular measurement where detailed analysis is required, while correction factors for LEL and PID readings help align measurements with specific site gas mixtures.

The Honeywell BW GasAlertMicro 5 includes selectable language support (English, French, German, Spanish and Portuguese), reducing training complexity for multinational teams. An extensive range of replacement sensors, PID lamps and spare parts supports long-term serviceability and asset life. The detector carries multiple international safety certifications, including specific approvals for IR and PID models, allowing deployment across diverse regulatory regimes. Comprehensive warranty coverage, typically two years including sensors (with one-year coverage for certain sensor types such as NH3, Cl2, O3, ClO2 and the PID lamp), further underpins lifecycle reliability and total cost of ownership.