VOC-A4 Volatile Organic Compound Sensor

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

PPB-level VOC detection for portable and indoor air quality instruments.

The VOC-A4 sensor is a ppb-level volatile organic compound (VOC) sensor designed for industrial safety and environmental air quality applications where low-level VOC trends matter. Its 4-electrode A-Series design delivers best-in-class baseline stability and high sensitivity at ppb concentrations, making it ideal for portable and handheld instruments.

Available as standard VOC-A4 or as VOC-A4+ with Integrated Smart Technology (IST), the sensor can store calibration and identification data on-board and includes an integrated temperature sensor, enabling plug-and-play integration 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-A4

Volatile Organic Compounds (VOCs)

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

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

200–400 nA / ppm (typical for ethanol at < 1ppm)

T90 < 30 s

Recommended: 0V Tunable

> 36 months

 

Feature

Benefit

PPB-level, 4-electrode electrochemical design

Enables low-level VOC trend monitoring with improved baseline stability.

A-Series 20 mm industry-standard footprint

Drop-in fit for many existing portable and handheld gas detector platforms.

Optional Integrated Smart Technology (VOC-A4+)

Stores calibration and specification data on-sensor, simplifying electronics and field replacement.

Bias operation up to 0.3 V

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