AirmoVOC C6-C20 Organic Compound Analyzer

Key Features

• Heated Sampling Line: Ensures continuous and stable sampling up to the heated valve in the GC unit.

• Gas-Phase PAHs Analysis: Includes compounds such as Naphthalene (C10), Me-Naphthalene, 1-Me-Naphthalene, Acenaphthene, Acenaphthylene, Fluorene, Phenanthrene, Anthracene, Fluoranthene, Pyrene (C16) and Benzo(a)pyrene (C20).

• Straight-Chain Alkane Analysis: From C6 (DimethylButane) to C20 (N-Eicocosane) without the need for a condensation module.

• Online GC-MS Monitoring: Utilizes Det QMS.

• Communication Protocols: Supports MODBUS, JBUS, or MGS1.

• Signal Output: Provides analog output (4–20 mA or 0–10 V) or alarm signals.

• Auxiliary Power Supply: 24 V, along with gas supply solutions such as H₂ generators and contaminant-free air for portable analyzers.

• Multiplexer System: Supports up to 32 signal channels.

• Purge Module: Extracts VOCs from water, enabling online VOC analysis in water.

• Multi-Point Calibration: Utilizes devices such as CALIB MFC, XXXCYL MFC, or airmoCAL 200 MFC.

• Control Software (developed by Chromatotec®) Allows:

  • Remote system monitoring.

  • Data archiving and traceability, including quality control (QC).

  • Configuration and control of alarm thresholds.

  • Data export via MODBUS, 4–20 mA, or 0–10 V.

  • Calculation of retention time, peak area, mass, and concentration profiles of compounds.

Operating Principle

Sampling and Pre-Concentration:

• Uses a mass flow controller (MFC) integrated within the VISTACHROM® software to adjust the sample flow rate appropriately.
• The sampling line is continuously heated and combined with an absorbent trap to pre-concentrate organic compounds.

Desorption and Separation of Compounds:

• Compounds are released via thermal desorption from the trap and directly injected into a metallic capillary column (inner diameter: 0.2 mm).
• The column is managed by a temperature gradient up to 350°C, with the H₂ carrier gas pressure regulated by a piezo valve to ensure stable gas flow.

Detection and Recording:

• The separated compounds are detected by the FID, allowing the system to record and analyze the resulting chromatographic signals.