Dual-Channel Atmospheric Online Concentration Sampler, ZDD-1 (CAT#: STEM-C-2741-ZJF)

The ZDD-1 Dual-Channel Atmospheric Online Concentrator is specifically engineered for meticulous analysis in environmental monitoring:
It excels in both qualitative and quantitative assessment of VOCs within pivotal monitoring zones and industrial perimeters.
Continuous monitoring of ozone precursors, particularly PAMS57, facilitates an ongoing evaluation of atmospheric dynamics.
Its versatile functionality enables concurrent detection of various compound categories, 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.
Equipped with a 7-inch resistive touch screen with full Chinese 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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