BW Gas Alert Micro 5 PID Series Multi-Gas Detector

GasAlertMicro5 PID photo-ionization sensor detects volatile organic compounds or VOCs and can be added to a standard four gas configuration or combined with non-standard combinations of other sensor. Add the attachable/removable sampling pump for confined space entry or remote sampling

GasAlert Micro5 PID portable gas detector simultaneously monitors up to five atmospheric hazards including volatile organic compounds (VOCs), oxygen, combustible gas (% LEL), and a wide selection of individual electrochemical toxic sensors.

Compact and lightweight, GasAlertMicro5 PID activates audible, visual and vibrating alarms in the event of a low, high, TWA or STEL alarm condition. VOCs present multiple potential threats in the workplace environment.

VOCs are characterized by their tendency to evaporate easily at room temperature and include substances such as solvents, paint thinners, benzene, butadiene, hexane, toluene, as well as vapors associated with fuels such as gasoline, diesel, heating oil, kerosene, and jet fuel.

The GasAlertMicro5 PID's integrated photoionization detector (PID) enables sensitive broad spectrum monitoring of volatile organic contaminants. Highly configurable to suit a range of applications, GasAlertMicro5 PID comes as a diffusion or pumped instrument; with either alkaline or NiMH rechargeable hot-swappable battery pack and has optional datalogging capabilities.

Standard features include confidence beep, automatic calibration, full function self test, and an extended selection of user-settable field options, plus a simple automatic calibration procedure.

Supported Gases

  • H2S - hydrogen sulfide
  • CO - carbon monoxide
  • O2 - oxygen
  • SO2 - sulfur dioxide
  • PH3 - phosphine
  • NH3 - ammonia
  • NO2 - nitrogen dioxide
  • HCN - hydrogen cyanide
  • Cl2 - chlorine
  • ClO2 - chlorine dioxide
  • O3 - ozone
  • LEL combustibles
  • PID - photo ionization

What's in the box:

  • 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


Auto zero: Yes
Calibration: Automatic
Backlight: 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 set points: 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
Storage: v2 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


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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