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AQ7800 Ambient Air Non-methane Total Hydrocarbons Continuous Monitoring System (Direct Method)

  • AQ7800 Ambient Air Non-methane Total Hydrocarbons Continuous Monitoring System (Direct Method)
AQ7800 Ambient Air Non-methane Total Hydrocarbons Continuous Monitoring System (Direct Method)
+
AQ7800 Ambient Air Non-methane Total Hydrocarbons Continuous Monitoring System (Direct Method)
+
  • AQ7800 Ambient Air Non-methane Total Hydrocarbons Continuous Monitoring System (Direct Method)

AQ7800 Ambient Air Non-methane Total Hydrocarbons Continuous Monitoring System (Direct Method)

The ambient air non-methane total hydrocarbons (NMTH) on-line monitoring system can monitor methane, non-methane total hydrocarbons, and also extend to relevant parameters such as meteorological five parameters (temperature, humidity, pressure, wind speed, wind direction). The AQ7800 system consists of five subsystems: sample collection unit, quality control unit, gas supply unit, analysis unit, and data acquisition and transmission unit. The equipment adopts the principle of hydrogen flame ionization detection, which has many advantages such as high sensitivity, wide linear range, and small dead volume. By utilizing low-temperature enrichment and chromatographic column separation methods combined with valve switching technology, it can analyze non-methane total hydrocarbons and methane respectively in a short time (6-7 minutes).
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Product advantages

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The principle of direct method technology is characterized by a low detection limit.

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The whole process is accompanied by high temperature and heating, without any cold spots.

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Pipeline passivation treatment to reduce adsorption.

Product Details

Ambient Air Quality Monitoring Equipment for Non-methane Total Hydrocarbons Detection
Product Introduction
The continuous ambient air monitoring instruments uses the GC-FID method to directly measure the concentration of methane and non-methane hydrocarbons by back-blowing and enrichment of the sample gas, enabling accurate measurement of low The continuous ambient air non-methane monitoring system uses the GC-FID method to directly measure methane and non-methane concentrations by back-blowing and enrichment of the sample gas. The system operates with a constant flow rate of ambient air into the sampling system. After de-dusting, the sample is enriched and removed at low temperature by a large capacity composite enrichment column, the MFC accumulates the sampling volume, the valve is switched and the back-blowing is performed, resulting in a separate peak of non-methane total hydrocarbons and a direct measurement of the concentration.
Product Performance
1. Accurate determination of total non-methane hydrocarbons in ambient air with detection limits at the ppb level.
2. Low-temperature cold trap enrichment and removal technology to improve the accuracy of direct measurement of non-total methane hydrocarbons.
3. Passivation treatment of the internal piping of the instrument, very low adsorption.
4. Full cold point free design for non-destructive testing of high boiling points.
Product Parameter

Ambient Air Quality Monitoring Instruments

Size

1030*720*2060mm, 970*900*1000mm

Working Temperature

15-35C°

Measurement Range

0-5ppm

Measurement Error

≤±1% F.S.

Measurement Method

GC-FID

Detection Limit

≤20 ppb

Working Humidity

≤85%RH

Applications

Urban air station MHC monitoring,
Urban roads, airports, ports VOCS monitoring
VOCS monitoring at enterprise plant boundaries
Park air VOCS monitoring
 

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