Anacon Process Control Pvt. Ltd. Supplies Volumetric Infrared - IR Gas Monitor. Anacon Process Control Pvt. Ltd. Manufactures toxic and combustible gas monitoring systems. Volumetric Infrared - IR Gas Monitor is designed to monitor hydrocarbon vapors in the range of 0-100% by volume, and is suitable for oil and gas wellhead mud-logging, hydrocarbon processing, and other extractive sampling applications. Volumetric Infrared - IR Gas Monitor provides superior life-cycle costs over destructive hot-wire measurements such as thermal conductivity and catalytic element sensors. It can replace expensive gas chromatographs in many gas exploration drilling applications. Its brand name is PIRVOL.