BW™ Flex

Overview

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Key features

With Catalytic LEL: 189 g (6.7 oz) with Alligator Clip and 173 g (6.1 oz) with Klick Fast Stud gram
With IR LEL: 186 g (6.6 oz) with Alligator Clip and 170 g (6.0 oz) with Klick Fast Stud gram

Applications

Confined space entry
Oil, gas and petrochemical
Wastewater and sewage
Steel and chemical plants

Standards and certification

ATEX

IECEX

Supplier: ISO 9001:2015 certified

PRODUCT DATASHEETDoc. SSLS/DS/GD-042 · Rev. 01 · 13-Oct-2026

BW™ Flex – technical data

Technical specifications

Brand	Honeywell
Weight	189 gram
Weight range	With Catalytic LEL: 189 g (6.7 oz) with Alligator Clip and 173 g (6.1 oz) with Klick Fast Stud gram / With IR LEL: 186 g (6.6 oz) with Alligator Clip and 170 g (6.0 oz) with Klick Fast Stud gram
Instrument Size	108.2mm x 61.5mm x 43.2mm (4.29in x 2.44in x 1.7in) with Alligator Clip
Sensor Range	CL2: 20 ppm / CO-H: 1000 ppm / CO: 1000 ppm / COSH Dual Toxic CO: 1,000 ppm / COSH Dual Toxic H2S: 100 ppm / H2S: 200 ppm / HCN: 50 ppm / LEL-CB-F: 100% LEL / LEL-CB-UF: 100% LEL / LEL-IR: 100% LEL / NDIR-CO2: 5% VOL (50000 ppm) / NO2: 20 ppm / NO: 100 ppm / O2: 25% VOL / SO2: 20 ppm
Humidity Range	0%-95% RH percent / 5 to 95% RH (Non-Condensing) percent
Minimum Temperature	-40 degree Celsius
Maximum Temperature	60 degree Celsius
Alarm Included	Yes
Series Name	Honeywell BW Flex 4/5 Series
Alarm Type	Audible (95 dB) / Vibrating / Visual
Alarm Settings	Low, High, TWA, STEL, Negative Drift, OL (Over Limit), Multi-Alarm, Low Battery
Battery Run Time	40 Days @8 Hours of Use/Day with NDIR CH4 Sensor hours / Up to 15 Hours with Catalytic LEL hours
Batteries Required	Yes
Batteries Included	Yes
Standards	ATEX, IEC Ex, CSA, FTZU, INMETRO, GOSST, CCCF, CPA, KRS, MED, DNV, SABS, FCCID, IC, UKCA, CE
Certifications - Hazloc	ATEX, IECEX
Datalogging	45 days of data at 15 sec interval, 8hrs/day
Filter Type	Catalytic Bead Filtered

PRODUCT DATASHEETDoc. SSLS/DS/GD-042 · Rev. 01 · 13-Oct-2026

BW™ Flex – technical data, continued

Technical specifications

Filter Required	Yes
Filter Included	Yes
User Options	Always ON / Apply Enforcement Policies / Assign Worker and Location Assignments / Change High, Low, TWA and STEL Alarm Set Points / Latching Alarms / Peak Hold Function / Set Calibration and/or Bump Test Reminders
Sensor Type	Catalytic, IR
Number of Sensors Included	4
Warranty	3 Years
Wireless Technology	BLE
Ingress Protection	IP66/68 / IP66/IP68
Gas Type	H2S, CO, O2, LEL, SO2
External Calibration	IntelliDox Instrument Management System
Decibels	95 decibel
Combustible Concentration	LEL-CB-F 100% LEL / LEL-CB-UF 100% LEL / LEL-IR 100% LEL

Ordering information

Brand	Honeywell

Inspection and care

Keep sensors and filters clean, charge batteries as directed and record bump tests and calibrations.

Storage

Store in a cool, dry place away from direct sunlight, heat and chemicals.

Data given in good faith from manufacturer information and subject to change without notice. Select PPE based on a site risk assessment. Scan the code for the product page.