529® Online FID Analyser – Air Quality Monitoring

529® Online FID Analyser

Air Quality Monitoring

The 529® FID detector is a carbon atom counter. A sample is introduced into a micro flame lit by hydrogen and air (1:10 ratio), where the electrical charges generated by the oxidation of Cx to CO are proportional carbon content in the sample. The electrical charges are collected by two polarised electrodes and converted by an electrical circuit into an electronic signal. The PCF’s Mod. 529 NMHC (Non Methane Hydrocarbon) gas chromatographic analyser is intended for continuous monitoring of Total Hydrocarbons (THC) and the methane (CH4) fraction in ambient and indoor air.

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529® Exclusive features – Measured Gases

Combination of GC and FID methods for Online monitoring of THC, CH4 and NMHC	Proprietary micro FID detector
Keyboard / LCD display interface for configuration & calibration	Built-in automatic ignition
Discrete gas sampling system (eductor)	Fully automatic standalone system for fast, accurate and reliable analysis of THC, CH4 and NMHC

GAS	FULL RANGE	LoD
THC	10 to 500 ppm	0.02 ppm
CH4	10 to 500 ppm	0.02 ppm
NMHC	10 to 500 ppm	0.02 ppm

The separation of methane fraction is based on the chromatographic method. Once specified the CH4 is measured separately and then subtracted from Total Hydrocarbons concentrations. The measuring sequences are managed by the built-in 10 port rotation valves enabling sequential measurement of THC, CH4 and NMHC. A zero calibration cycle triggered automatically before each measuring cycle guarantees a high signal stability and efficient drift compensation.

The same technology can be adapted to specific VOCs air quality monitoring. The coupling of gas chromatography separation with state of the art FID detector allows accurate and reliable measurement of Benzene (C6H6), Ethylene (C2H4), Propylene (C3H6), Styrene (C8H8), Acetone (C3H6O), Formaldehyde (CH2O) and many others VOCs in ambient and indoor air.

GAS	FULL RANGE	LoD	ACCURACY
Benzene C6H6	0-10 / 0-20 / 0-50 / 0-100 /0-200 / 0-500 ppm	0.05 ppm	1% full scale
Ethylene /Ethylene Oxide (ETO) C2H4	0-10 / 0-20 / 0-50 / 0-100 /0-200 / 0-500 ppm	0.02 ppm	1% full scale
Propylene / Propylene Oxide C3H6	0-10 / 0-20 / 0-50 / 0-100 /0-200 / 0-500 ppm	0.02 ppm	1% full scale
Styrene C8H8	0-10 / 0-20 / 0-50 / 0-100 /0-200 / 0-500 ppm	0.5 ppm	1% full scale
Acetone CH36O	0-10 / 0-20 / 0-50 / 0-100 /0-200 / 0-500 ppm	0.5 ppm	1% full scale
Formaldehyde CH2O	0-10 / 0-20 / 0-50 / 0-100 /0-200 / 0-500 ppm	0.1 ppm	1% full scale

529® – THC, NMHC and CH4 Online Monitoring

Typical Applications

The THC, NMHC and CH4 online FID analyser is typically designed for integration into Air Quality Monitoring Stations intended to measure continuously the concentration of Hydrocarbons and Volatile Organic Compounds. It also offers a large range of advantages for VOCs monitoring in indoor air within the frame of Occupational Health and Safety.

529® Online FID Analyser

529® Exclusive features – Measured Gases

529® – THC, NMHC and CH4 Online Monitoring

Typical Applications

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