Flex-i (Filtered Catalytic LEL)


Flex-i (Filtered Catalytic LEL)

From: £669.00 From: £501.75

£0.00 inc VAT
From: £669.00 From: £501.75

Honeywell BW™ Flex gas detector delivers the flexibility you need. Choose from more than 15 sensors to simultaneously detect up to 4 gas hazards.

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Flex-i (Filtered Catalytic LEL)

From: £669.00£501.75

£602.10 inc VAT

Serviceable 1-4 Multi Gas Detector



Honeywell BW™ Flex gas detector features a large high-resolution display with readings available in a wide range of languages. Vital safety information is conveyed clearly and effectively, enabling faster decision-making to protect lives in hazardous environments. Its innovative design, compact size and ease of use builds on the legacy of Honeywell BW™ gas detection products.


Honeywell BW™ Flex incorporates i-Series intelligent sensors which monitor sensor status and provide advanced predictive calibration, maintenance and end-of-life information in real-time. These advanced alerts help reduce the likelihood of failure and increase awareness so preventive action can be taken to avoid safety incidents and unexpected downtime.


Honeywell BW™ Flex can be paired with a smartphone easily via Bluetooth®. Download the Honeywell Safety Suite Device Configurator app for quick and precise device management, maintenance, reporting and analysis. Increase productivity by simplifying tasks like recording incidents and save time with one-click download for all instrument data.

Whether you’re protecting workers or first responders – in industries from steel and wastewater to paper and pulp – Honeywell BW™ Flex delivers the flexibility you need. Choose from more than 15 sensors to simultaneously detect up to 4 gas hazards.

Want to see the full concentration of a gas or other information not on the icon-based display? Need to report a gas alarm?

Simply download the Honeywell gas detector Safety Suite Device Configurator app, use Bluetooth® to pair your smartphone with the detector, and open the app to see the data – all organized in a report that’s ready to send.

Standard Package Contents

Detector complete with sensors, stainless steel alligator clip, concussion-proof housing
and built-in rechargeable battery
Calibration/test cap and hose
USB charging cable
Quick Start Guide

Technical Specifications


108.2 mm x 61.5 mm x 43.2 mm (4.29 in x 2.44 in x1.7 in) with Alligator Clip

108.2 mm x 61.5 mm x 37.8 mm (4.29 in x 2.44 in x 1.49 in) with Klick Fast Stud

Weight with Catalytic LEL: 189 g (6.7 oz) with Alligator Clip, 173 g (6.1 oz) with Klick Fast Stud

With IR LEL: 186 g (6.6 oz) with Alligator Clip, 170 g (6.0 oz) with Klick Fast Stud

Working Temperature

-40°C to 60°C (-40°F to 140°F) and -20°C to 60°C ( -4°F to 140°F ) with Catalytic LEL sensor

Working Humidity

5% to 95%

Ingress Protection

IP66, IP68

Alarms and Type

Visual, vibrating, audible (95 dB); Low, High, TWA, STEL, Negative Drift, Over Limit, Multi-alarm


  • Perform diagnostic of sensor, circuitry on activation:
  • Activated detector automatically performs analogue sensor diagnostic every 10 minutes,
  • Digital sensor diagnostic every second

Typical Battery Life

40 days @ 8 hours of use per day with IR LEL 15 hours with Catalytic LEL (with NDIR CH4 sensor)

Connected Worker

Bluetooth® Low Energy (BLE) – Ability to connect to Honeywell’s Safety Communicator App, Device Configurator App and Safety Suite Device Configurator Software

User Options

  • Change High, Low, TWA and STEL alarm set points
  • Latching alarms
  • Set Calibration and/or bump test reminders
  • Assign worker and location assignments
  • Always on

User options only available via Device Configurator and Safety Suite Device Configurator

Certifications and Approvals

ATEX, IEC Ex, contains FCCID, contains IC, CSA approval pending

Device Warranty

Three-year warranty for sensors and detector

Sensor Specifications

Gas Name Measuring Range Resolution Working Temperature

CO 0 to 2000 ppm 1 ppm -40°C to 60°C (-40°F to 140°F)

H2S 0 to 200 ppm 1 ppm (can set to 0.1ppm) -40°C to 60°C (-40°F to 140°F)

SO2 0 to 150 ppm 0.1 ppm -20°C to 50°C (-4°F to 122°F) intermittent

-40°C to 55°C (-40°F to 131°F)

O2 0 to 30% VOL 0.1% VOL -40°C to 60°C (-40°F to 140°F)

NDIR-CH4 0 to 100% LEL 1% LEL -40°C to 60°C (-40°F to 140°F)

Catalytic LEL 0 to 100% LEL 1% LEL -20°C to 60°C (-4°F to 140°F)

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