Aeroqual VOC Sensor Head 0-25 ppm (VM)

This Volatile Organic Compound (VOC) sensor head using Gas Sensitive Semiconductor (GSS) technology will measure VOC's from 0-25 ppm with a 0.1 ppm resolution and 10% accuracy.

VOC Information

Back Ordered. Expected to ship on July 24

This Volatile Organic Compound (VOC) sensor head using Gas Sensitive Semiconductor (GSS) technology will measure VOC's from 0-25 ppm with a 0.1 ppm resolution and 10% accuracy.

This sensor uses active sensor technology with an internal fan to pull air across the GSS sensor at a specific flow rate for accurate gas detection.  This fan will pull a fresh gas stream across the GSS sensor every 60 seconds for accurate VOC detection.

This sensor head will be a direct fit onto any Series-200, Series-300, or Series-500 Aeroqual ozone monitor.  This head can be purchased as an addition to your existing monitor, or with a new base unit.  To purchase with a base unit see our Aeroqual ozone monitor page.  If you currently have an Aeroqual ozone monitor this sensor will be a direct fit for your current monitor.  The Series-200, Series-300, or Series-500 will automatically detect this as a 0-25 ppm VOC head and react accordingly. 

Calibrated against isobutylene (other specific VOC calibrations are available on request).


Link to more information on VOC Sensors and Monitors


Sensor Information:

Sensor specifications for GSS VOC sensor head

GSS vs PID Sensor Response and comparison


Other VOC Sensors Available from Aeroqual:

VOC 0-500 ppm - GSS sensor head

VOC 0-20 ppm - PID sensor head

VOC 0-1,000 ppm - PID sensor head



Volatile organic compounds (VOCs) are organic chemicals that are present in the gas phase at ordinary room temperature. The term VOC covers a wide range of chemical compounds that are both man-made or naturally occurring. Some VOCs are harmful to human health or can cause environmental damage. Although volatile organic compounds are usually not acutely toxic, they often cause long-term health effects from continuous low level exposure.

Indoor VOC

The concentration of volatile organic compounds found in indoor environments is significantly higher when compared to outdoor levels. VOCs are emitted from a wide range of products commonly found inside buildings. They include paint, cleaning supplies, furnishings, glues, permanent markers and printing equipment. Levels can be particularly high when there is limited ventilation. Exposure to high concentrations of VOCs can lead to throat irritation, headaches and damage to internal organs. The severity of the health effect depends largely on the type of organic compound present as well as the exposure time. Aeroqual offers a wide range of portable and fixed monitors with a VOC sensor for indoor VOC monitoring.

Outdoor VOC

A large proportion of outdoor VOC is biologically generated by plants and released via the leaves. The concentration emitted depends on the type of plant as well as environmental factors including temperature and sunlight. Urban planners will take this into consideration when deciding on the types of vegetation to plant in towns and cities. Although natural emissions tend to be larger overall, anthropogenic sources are more of a concern in urban areas. Emissions from the oil and gas industry, solvent usage and transportation all contribute to increased VOC concentrations. Aeroqual can provide both portable and fixed monitors with a VOC sensor to measure outdoor VOC concentrations.

Aeroqual VOC Sensors Selectivity

The PID and GSS VOC sensors available at Aeroqual are non-selective sensors. They have been calibrated against isobutelyne but will respond to a wide range of VOCs at varying degrees of sensitivity. Correction factors can be provided for a specific VOC response if requested. If a specific VOC is being measured, no other VOCs should be present in the monitoring environment to avoid a cross interference.



Compare the Series 200, 300, 500 monitors:

Compare the Aeroqual handheld devices


Aeroqual Series-200


Aeroqual Series-300


Aeroqual S-500

Interchangeable sensor head Yes Yes Yes
Digital LCD Display Yes Yes Yes
Min, Max, Average readings on screen Yes Yes Yes
Field Replaceable Battery Yes Yes Yes
Remote Sensor Capability Yes Yes Yes
Temp and HR Sensor optional Yes Yes Yes
External Control Outputs No Yes Yes
Audible Alarm No Yes Yes
High and Low Alarms No Yes Yes
0-5 VDC Analog output No Yes Yes
Zero Calibration capability Yes Yes Yes
Span Calibration capability No Yes Yes
Internal Data Logging Capability No No Yes

PC connection cables and capability

No No


 View a brochure with specifications on the Series-200, 300, and 500.


Detailed Sensor Specifications for Aeroqual ambient sensors

Click on image to expand

Sensor Type:

There are two types of Aeroqual sensors, type 1 and type 2. 
The type 1 is used with the S-200, S-300, S-500, and S-900 monitors. 
The type 2 is calibrated specifically with fittings on the end allowing it to be used with the ENC enclosure and in the S930

Aeroqual type-1 and type-2 sensors types


Full list of technical information and specifications for all Aeroqual sensors

VOC Information

More Information
Manufacturer Aeroqual
Quickbooks Stock Level -1.000000
Quickbooks Stock Date Expected 2024-07-19 00:00:00
Call For Price No
Sensor Type GSS (Gas Sensitive Semiconductor)
Range 0-25 ppm
Maximum Exposure 50 ppm
Monitor sensor fits S-200 / S-300 / S-500, Series-900
Minimum Detection Limit 0.1 ppm
Accuracy < +/- 10%
Resolution 0.1 ppm
Response Time <60 s
Sampling Method Fan
Operational Temperature Range 0 to 40 C
Operational RH Range 10 to 90%
Warranty 6 Month
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