Honeywell 620-0025

Product Category: Portable Gas Detection Sensor Cartridge

Product Introduction:
The Honeywell 620-0025 is a replaceable electrochemical sensor cartridge designed for use with Honeywell BW MicroClip and BW Solo series portable gas detectors. It detects Carbon Monoxide (CO) in the range of 0–500 ppm with a 2-year shelf life.

Category:
Description

Technical Specifications:

Parameter Value
Target Gas Carbon Monoxide (CO)
Measurement Range 0–500 ppm
Resolution 1 ppm
Accuracy ±3% of reading or ±5 ppm (whichever is greater)
Response Time (T90) < 15 seconds
Sensor Life 2 years (from activation)
Operating Temperature -40°C to +50°C
Humidity Range 0–95% RH (non-condensing)
Certifications ATEX, IECEx, UL, CSA, CE
Part Number 620-0025

Functional Features:

  • Electrochemical sensor technology
  • Bump test and calibration capability
  • Auto-zero in clean air
  • End-of-life warning at 10% remaining sensor life

Performance Parameters:

  • Alarm Setpoints: Low (25 ppm), High (100 ppm) — configurable
  • Battery Compatibility: BW MicroClip / Solo Li-ion battery pack
  • Communication: NFC-enabled for configuration

Material Composition:

Component Material
Sensor Element Electrochemical cell (lead anode, gold cathode)
Housing ABS plastic, yellow (CO-specific color code)
Filter PTFE membrane
Contacts Gold-plated pins

Working Principle:
CO gas diffuses through the PTFE membrane into the electrochemical cell. At the working electrode, CO is oxidized, generating a current proportional to the gas concentration. The sensor electronics convert this current to a ppm reading. The reference electrode maintains stable potential.

Key Advantages:

  • Long 2-year sensor life reduces replacement frequency
  • ATEX/IECEx certified for hazardous area use
  • Color-coded housing prevents cross-gas installation errors
  • NFC enables quick configuration via smartphone

Applicable Industries:

  • Oil & Gas (refineries, offshore platforms)
  • Mining (underground)
  • Fire Services
  • Confined Space Entry
  • Industrial Manufacturing

Installation Requirements:

  • Insert sensor into BW MicroClip/Solo detector housing until click
  • Perform bump test before each use
  • Calibrate every 6 months or per regulatory requirement

Usage Precautions:

  • Do not use in oxygen-deficient atmospheres (<17% O₂)
  • Replace sensor after 2 years regardless of readings
  • Store at -20°C to +40°C in sealed package
  • Do not expose to high concentrations (>500 ppm) for extended periods — causes sensor saturation
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