Gas detector AdvancedSense® TVOC
volatile organic compoundPIDelectrochemical

gas detector
gas detector
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Detected entity
Gas type
volatile organic compound
PID, electrochemical
Other characteristics
portable, with digital display
for indoor use


GrayWolf’s portable and semi-permanent VOC meters, monitors are highly versatile, for low parts-per-billion ranges up to high PPM toxic VOC exposure ranges. Volatile Organic Compounds (VOCs) emanate from a broad range of sources in industrial and general indoor air quality (IAQ) applications. GrayWolf offers five different plug-and-play Photo Ionization Detector (PID) sensors to choose from; with ranges optimized for your specific application. The DirectSense II-3 probe includes your choice of any of those PIDs, along with relative humidity and temperature. Our DirectSense II-5 probe also includes the sensors for %RH, °C/°F, accommodates your choice of PID plus up to 2 specific gas sensors (electrochemical or NDIR). The DirectSense II-8 probe offers a PID, %RH, °C/°F, and the choice of NDIR carbon dioxide and/or up to 5 electrochemical specific gas sensors (8 total). Our original DirectSense I Classical probes, while not plug-and-play, are also available in various configurations. Coupled with the power of our versatile meters and monitors, end-users can efficiently log and annotate readings, while easily accessing on-board information about specific volatiles and potential sources. Optional GrayWolfLive™ software allows remote access to instrument data & notes via smartphones, IPads, Droids, PCs, etc. Meter pouches and probe belt clips allow hands-free operation. Choice of low ppb, low ppm, mid-range ppm, wide/high-range ppm and high %RH VOC optimized PID sensors Excellent sensitivity, very low limits of detection (down to <5 ppb); crucial for IAQ/green building applications


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.