Gas chromatograph ChromaTHC

GCfor environmental analysisfor gas analysis

Overview
This continuous online VOC and odor monitoring system is designed for Odor & Chemical Control Units (OCU). It measures Methane (CH4), Non‑Methane Total Hydrocarbons (nmTHC) and Total Hydrocarbons using an automatic ChromaTHC gas chromatograph with Flame Ionization Detection (GC‑FID). The wall‑mounted analyzer is fully automatic, includes a built‑in computer and integrated zero‑air and hydrogen generators, and performs internal calibration with a permeation tube for automated data validation.

Applications

• Continuous emission monitoring for OCUs, biofilters and activated carbon systems
• Ambient air odor surveillance at industrial sites, wastewater treatment plants and landfills
• Process monitoring where VOC speciation and quantification are required

Key features

• Automatic ChromaTHC GC‑FID measuring CH4, nmTHC and total hydrocarbons
• Wall‑mounted, user‑friendly operation with embedded Windows‑based computer and LCD
• Built‑in zero‑air and H2 generators; internal permeation tube calibration
• Optional 3G/4G modem and automatic SMS alarm for media saturation alerts

Technical specifications

• Detection limit: 20 ppb for methane; < 20 ppb on nmTHC eqC3; chromaTHC‑1 ppb: LDL < 1 ppb for TVOC
• Detection range:
  • chromaTHC‑2 MIN: 20 to 2000 ppb (ampli 3); 0.2 to 20 ppm (ampli 2)
  • chromaTHC‑1 ppb: 1 to 2000 ppb (ampli 3)
• Relative standard deviation:
  • < 0.3 % over 48 h (RT)
  • < 2 % over 48 h (Span concentration)
• Cycle time:
  • chromaTHC‑2 MIN: 2 min for 0–3 ppm (ambient, standard)
  • chromaTHC‑2 MIN: 3–5+ min for higher concentrations or process applications (option)
  • chromaTHC‑1 ppb: 10 min
• Gas supply:
  • H2 (FID & carrier): 30 mL/min (inlet 2 bar; 1/16” double ferrule)
  • Air (FID): 180 mL/min (inlet 3 bar; 1/8” double ferrule)
  • Sample inlet (vacuum pump optional): 1/4” double ferrule, 80 mL/min at ambient pressure
  • Pneumatic valve commutation: 90 mL/min
• Results / Data & storage:
  • Embedded Windows‑based computer with LCD
  • 128 GB SSD hardware storage
  • Ethernet and remote control capability; MODBUS RTU / MGS1 or JBUS
• Sample volume: Injection loop sized per application
• Mounting / integration: Wall‑mounted automatic analyzer for OCU integration

Installation & integration

• Wall mounting with standard process connections and sample inlet options
• Interfaces for remote control and integration into SCADA via MODBUS or Ethernet
• Vacuum pump, sample tubing and protective filters available as accessories

Options & maintenance

• Optional 3G/4G modem and automatic SMS alarms for media saturation notifications
• Internal permeation tube for scheduled automatic calibration
• Built‑in zero air and hydrogen generators reduce external gas bottle needs

Documentation & certifications

• TSP download available for product documentation
• Standards, approvals & certifications: N/A