BW Gas Alert Micro 5 IR Series 5 Gas Multi-Gas Detectors

GasAlertMicro5 IR adds infrared detection or CO2 to a standard four gas configuration or can be combined with non-standard combinations of other sensor for speciality applications. Add the attachable/removable sampling pump for confined space entry or remote sampling

GasAlert Micro 5 IR uses a non-dispersive infrared sensor to monitor carbon dioxide levels while simultaneously monitoring and displaying up to four additional atmospheric hazards including O2, LEL and a range of toxic gases.

Compact and lightweight, the GasAlert Micro 5 IR comes housed in a highly concussion-proof enclosure. Audible, visual and vibrator alarms activate in the event of a Low, High, TWA or STEL alarm condition. An optional motorized pump is available for remote sampling.

Beyond standard BW portable instrument features such as confidence beep, full function self test, automatic calibration and pass-code protection, the GasAlertMicro5 IR offers an extended selection of user-settable field options including: stealth mode, backlight options, selectable ppm resolution, STEL/TWA measurement choice, combustible correction factors, user-settable calibration gas concentrations, multi-language support.

Supported Gases

  • H2S - hydrogen sulfide
  • O3 - ozone
  • CO - carbon monoxide
  • LEL combustibles
  • O2 - oxygen
  • NH3 - ammonia
  • SO2 - sulfur dioxide
  • CO2 - carbon dioxide (through IR)

What's Included:

  • Batteries: three replaceable alkaline cells or one rechargeable battery pack with the GasAlertMicro 5 Battery Charger (also provided with the GasAlertMicro 5 PID and the GasAlertMicro 5 IR).
  • Sensors: O2, combustible (LEL), toxic, H2S/CO (TwinTox sensor), PID, or CO2
  • Calibration cap and hose
  • Single gas calibration cap
  • Screwdriver
  • Quick reference guide
  • Fleet Manager CD (if applicable)
  • Manual and training CD-ROM

Key Features:

  • Smaller and over 50% lighter than competitive instruments
  • Water-resistant design in an integral concussion-proof enclosure
  • Continuous LCD shows simultaneous gas concentrations for five gases
  • 0 - 1000 ppm measurement of VOCs (Volatile Organic Compounds)
  • Integral motorized pump option for remote sampling
  • Two power options: AA alkaline or rechargeable hot-swappable battery pack
  • Provides 95 dB alarm tone and two bright wide-angled alarm bars
  • Equipped with internal vibrating alarm for high noise areas
  • Multi-language support in English, French, German, Spanish, and Portuguese
  • Three backlight options: standard- activates in low light (auto), in alarm (auto) and reactivates on-demand; alarm only- activates in alarm conditions and reactivates on-demand; stealth mode
  • Four alarm levels: instantaneous Low and High Alarm for all gases; TWA (time-weighted average) and STEL (short-term exposure limit) for VOCs and toxic gases
  • Simple automatic calibration procedure; compatible with BW MicroDock II automatic test and calibration station
  • Records TWA, STEL, and maximum exposures to gas and displays readings on command
  • User selectable field options include: PID correction factor, language selection, confidence beep, span level, set TWA/STEL calculation choice, set calibration due date, pass code protection, latching alarm, 'SAFE' display function, stealth mode, and selectable ppm resolution for some gases (e.g. SO2 0.1 ppm)
  • Full function self-test of: sensor, battery and circuit integrity; and audible/visual alarms


2 months of continuous data at 5 second intervals via 32 MB Flash MMC card (64 MB and 128 MB cards also available); when full, the wrap-around feature replaces oldest data with most recent data.

Auto zero: Yes
Calibration: Automatic
Standard Mode: low light (auto); alarm condition (auto); reactivation on demand
Alarm Only Mode: alarm condition (auto); reactivation on demand
Stealth Mode: backlight inactive; audible and visual alarms silenced
Sensor: PID (VOC) 10.6 eV lamp; plug-in, electrochemical cell (toxic and oxygen); catalytic (LEL)
User field options: Confidence beep, set STEL period, force calibration on start-up, enable / disable sensor, pass code protection, latching alarms, span level, passed calibration user-lockout option, "SAFE" display function, stealth mode, fast pump, oxygen auto-cal on start-up, alarm only backlight mode, combustible gas measurement (% LEL or % by volume methane), LCD language option, STEL calculation choice, TWA calculation choice, PID / combustible correction factor options, user-settable calibration gas level, high resolution, clock
Pump: Tubing length up to 100 ft. / 30 m (50 ft. / 15 m standard) with user options
ALARM INDICATORS: Clearly advises alarm conditions with audible, visual, and vibrator alarms
Visual alarms: Two fl ashing alarm bars visible from all angles LCD indicates gas present and alarm levels encountered
Audible alarm: Typically 95 dB at 1 ft. / 30 cm variable pulsed audible alarm
Vibrator alarm: Pulses warning in gas alarm conditions, or for any status alarms
Status alarms: Low battery, over range, multiple gas / pump and failed or missing sensor
ALARM LEVELS: Instantaneous Low Alarm for all gases; Instantaneous High Alarm for all gases; TWA (time-weighted average) and STEL (short-term exposure limit) for toxics/VOCs
LCD: Continuous, alphanumeric gas readout and status display advises.
Gases monitored: VOCs (PID), H2S, CO, O2, SO2, PH3, NO2, NH3, HCN, Cl2, ClO2, O3 and/or combustibles (0-100% LEL or 0-5.0% methane)
Gas concentration: Simultaneously and continuously displays gas concentration(s) for all sensors (in ppm, % LEL, or % v/v) Peak (max)/STEL/TWA ppm or %: Records exposures and displays on demand
Alarm setpoints: Displayed on activation and on demand
Calibration due date: Days remaining on start-up
Clock: Real-time clock setting displayed on start-up
Full function self-test: Sensor integrity, circuitry, battery and audible/visual alarms on activation
Battery: Continuous
GENERAL SPECIFICATIONS: Rugged, composite material; two-shot molded polymer case with integral anti-shock boot
Operating temperature: 14 to 104oF / -10 to 40oC VOC (PID); -4 to 122oF / -20 to 50oC other gases
Humidity: 0 - 95% RH (non-condensing)
EMI/RFI: Complies with EMC Directive 89/336/EEC
Protection: Highly water resistant and dust proof housing
Battery Options: 12 hours on three AA alkaline cells or 10 hours on rechargeable "hot-swappable" battery pack when equipped with PID, oxygen, combustible and TwinTox (H2S/CO) sensor
Size: 5.7 x 2.9 x 1.5 in. / 14.5 x 7.4 x 3.8 cm
Weight: 13.1 oz. / 370 g
WARRANTY: Full 2-year warranty including all sensors (1 year PID lamp and NH3 sensor)
DATALOGGER OPTIONS: User-downloadable datalogger
Data recorder: All events and occurrences (calibration zero adjustment, calibration span adjustment, gas readings, TWA, STEL, alarm condition, failures detected by the microprocessor).
Sampling rate: Factory set at 5-second intervals and user-settable from 1 to 127-second intervals

This gas detector unit has the following replacement sensors available, depending upon individual configuration:

SR-X10-C1 Replacement oxygen (O2) sensor
PS-RH04S Replacement hydrogen sulfide (H2S) sensor
PS-RM04 Replacement carbon monoxide (CO) sensor
PS-RM04H Replacement carbon monoxide (CO) sensor, H2 resistant
PS-RS04 Replacement sulfur dioxide (SO2) sensor
PS-RC10 Replacement chlorine (Cl2) sensor
PS-RZ10 Replacement hydrogen cyanide (HCN) sensor
PS-RD04 Replacement nitrogen dioxide (NO2) sensor
SR-A04 Replacement ammonia (NH3) sensor
SR-V04 Replacement chlorine dioxide (ClO2) sensor
SR-B04 Replacement carbon dioxide (CO2) IR sensor
SR-Q07 Replacement volatile organic compounds (VOC) PID sensor, 10.6 eV
D4-RHM04 Replacement TwinTox sensor
SR-W04-UF Replacement combustible (LEL) sensor
SR-W04 Replacement combustible (LEL) sensor with heavy duty silicone filter


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