Dual-Channel Atmospheric Online Concentration Sampler, ZND-1 (CAT#: STEM-C-2740-ZJF)

The ZND-1 Dual-Channel Atmospheric Online Concentrator is designed for precise analysis in environmental monitoring:
- It specializes in both qualitative and quantitative assessment of VOCs within key monitoring zones and industrial perimeters.
- Continuous monitoring of ozone precursors, particularly PAMS57, ensures a thorough understanding of atmospheric chemistry.
- Its capability extends to simultaneous detection of diverse compound types including alkanes, nitrogen- or oxygen-containing aldehydes, ketones, esters, halogenated hydrocarbons, and sulfides.
- Typical monitored compounds encompass benzene derivatives, acrylonitrile, acetone, methanol, methyl mercaptan, epichlorohydrin, m-xylene, dichloroethane, vinyl chloride, and more.

Sample Transfer Tube Heating Range: 40℃—230℃, Temperature Control Accuracy 1℃
Injection Valve Heating Range: 50℃—240℃, Temperature Control Accuracy 1℃ (customizable to 330℃)
Trap Temperature Range: -35℃—400℃
Flash Heating Rate: >50℃/s
Enrichment Time: 0-60min
Injection Time: 0-10min
Interval Time: 0-60min
Sampling Time: 0-60min
Sampling Flow Rate: 16-160ml/min
RSD: ≤2.5%
Power: 450W
Dimensions: 550×484×222mm (5U chassis)

Utilizes semiconductor cooling for flexibility and convenience.
Employs imported high-inertness deactivation tubing for all sample transfer lines, ensuring no residue or cross-contamination, thereby guaranteeing the repeatability and accuracy of sample injection.
Utilizes dual-channel control of Mass Flow Controllers (MFC), enabling effective enrichment of VOCs in ambient air. Features a dual-trap design (A and B traps) filled with three types of adsorbent materials selectively matched to the target compounds.
Features high-temperature six-way valves, with a maximum operating temperature of 240°C (customizable up to 330°C).
The connection points between the six-way valves and the transfer lines are located within a heated insulation box, eliminating transfer cold spots and ensuring sample integrity.
Six-way valves are motor-driven for ease of use.
Features a full Chinese LCD display for simple and convenient operation.
Comes with a universal drive interface, allowing connection to chromatographs from various domestic and international brands, enabling automatic startup of chromatography and workstations.

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