VOC-B4 Volatile Organic Compound Sensor

VOC Gas Sensor, Electrochemical, B-Series, ppb-level VOC monitoring

PPB-level VOC sensor optimised for fixed and outdoor air quality networks.

The VOC-B4 sensor is a ppb-level VOC sensor designed primarily for environmental air quality monitoring and fixed installations. The larger B-Series format provides additional electrolyte volume and robust mechanical design, supporting long-term stability in outdoor and high-humidity environments.

The VOC-B4 is available in a standard analogue version and as VOC-B4+ with Integrated Smart Technology (IST). The IST variant integrates a memory chip and temperature sensor, storing calibration and specification data for plug-and-play replacement and simplified temperature compensation.



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Key Specifications:

 

Sensor Model

Target Gas

Technology / Package

Measurement Range

Typical Sensitivity

T90 Response Time

Bias

Operating Life

VOC-B4

Volatile Organic Compounds (VOCs)

Electrochemical, B-Series, 4-Electrode (ppb AQ sensor)

0–100 ppm VOC (application dependent; see datasheet)

400–650 nA / ppm (typical for ethanol at < 1 ppm)

T90 < 30 s

Recommended: 0V Tunable

> 36 months
 

Feature

Benefit

PPB-level VOC detection for fixed monitors

Delivers stable long-term VOC measurements for outdoor and building air-quality networks.

B-Series 32 mm package

Improves stability in high-humidity and temperature-variable environments.

Low-noise operation with ISB boards

When used with Alphasense ISB hardware, noise is reduced to a few ppb, enabling demanding AQ applications.

Bias operation up to 0.3 V

Allows optimisation of selectivity for different VOC classes following Alphasense application guidance.

Optional Integrated Smart Technology (VOC-B4+)

Provides on-sensor memory and temperature measurement to simplify integration and service.