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4O2-LQ

Brief Description:
The Honeywell 4O2-LQ is a high-performance electrochemical oxygen sensor designed for precise O₂ monitoring in industrial, medical, and environmental applications. It provides fast, stable, and reliable oxygen measurements with minimal drift over time.

Key Features:
✔ High accuracy (±0.5% O₂) and fast response (<15 sec T90)
✔ Long lifespan (>24 months) with low drift
✔ Compact, low-power design for portable devices
✔ Analog (mV) or digital (I²C) output options
✔ RoHS & REACH compliant

Typical Applications:

Medical ventilators & respiratory therapy devices

Industrial safety (O₂ monitoring in confined spaces)

Indoor air quality (IAQ) systems

Food packaging & modified atmosphere storage

Environmental monitoring & portable gas detectors

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Honeywell 4O2-LQ Oxygen Sensor – Product Parameters & Description
Key Parameters:
Model: 4O2-LQ

Type: Electrochemical Oxygen (O₂) Sensor

Measurement Range: 0–25% O₂ (standard), other ranges available

Accuracy: ±0.5% O₂ (typical at 20.9% O₂)

Response Time (T90): <15 seconds

Operating Temperature: –30°C to +50°C (–22°F to +122°F)

Operating Humidity: 15–90% RH (non-condensing)

Pressure Range: 800–1200 hPa

Expected Lifetime: >24 months (in normal operating conditions)

Output Signal: Analog (mV) or digital (I²C) depending on configuration

Power Supply: 3.3 VDC (digital) or passive (mV output)

Warm-up Time: <2 minutes

Cross-Sensitivity: Low interference to CO₂, CO, and other gases

Dimensions: Compact, board-mountable design