The AutoTDS-V is a high-performance, fully automated thermal desorption sample preparation system engineered specifically for environmental air monitoring and indoor air quality (IAQ) analysis. Seamlessly interfacing with mainstream GC and GC-MS instruments, the system provides automated sequence handling for up to 20 sample tubes (configurable for 10/20/40/50 positions). Equipped with optional ambient or low-temperature secondary refocusing traps, the AutoTDS-V delivers maximum recovery of volatile organic compounds (VOCs), sharp chromatographic peaks, and exceptional measurement repeatability.
Details
Key Features
- Universal GC/GC-MS Integration: Standardized hardware interfaces connect with all major analytical instruments, featuring dual-channel sync output signals to automatically initiate data acquisition.
- Fully Automated Workflow: Software-driven sequence control allows “walk-away” operation. A large color touchscreen displays real-time temperature curves and system status throughout every run.
- Advanced Cold-Trap Refocusing: Combines Peltier (semiconductor) thermoelectric cooling with forced air cooling, paired with direct-resistance rapid heating (>3000 °C/min) for high enrichment efficiency and narrow peak widths.
- Zero-Cold-Spot Heated Path: Independently heated 6-port valve and transfer lines prevent cold spots, eliminating sample condensation, carryover, and memory effects.
- Automated Leak Checking: Performs an automated seal test on each sample tube prior to analysis, protecting valuable samples and ensuring data validity.
- Flexible Modular Options: Supports optional ambient or cryogenic secondary desorption modules to handle both trace-level and high-concentration VOC samples.
Technical Specifications
| Parameter | Specification |
| Sample Capacity | 20 positions (Standard; 10/20/40/50 configurable) |
| Primary Desorption Temp. | 50 °C – 400 °C (Control accuracy: ±1 °C) |
| Secondary Desorption Temp. | 150 °C – 400 °C (1 °C increments; Heating rate: >3000 °C/min) |
| Cold Trap Temp. Range | -30 °C to Ambient (at 20 °C ambient temp; Optional) |
| Heated Line Temp. | 50 °C – 220 °C (Control accuracy: ±1 °C) |
| Purge Flow Rate | 10 – 100 mL/min |
| Timing Range & Error | 1 sec – 59 min 59 sec (Timing error <0.1%) |
| Pneumatic Pressure Rating | >0.4 MPa (>4 kg/cm²) |
| Sync Signal Output | 2-channel relay pulse (1–2 seconds) |
| Power Supply & Rating | 220 VAC ± 22 VAC, 50 Hz ± 0.5 Hz; Power < 800 VA |
| Dimensions & Weight | 500 mm (H) × 400 mm (W) × 700 mm (L); Approx. 35 kg |
Operating Requirements
| Parameter | Requirement |
| Operating Temperature | +5 °C to +35 °C |
| Relative Humidity | ≤ 85% (non-condensing) |
| Backflush Carrier Gas Pressure | ≤ 0.4 MPa |
| Power Supply | 220 VAC ± 22 VAC, 50 Hz ± 0.5 Hz |
Applications & Regulatory Compliance
- Environmental Air Monitoring: Complies with HJ 644-2013 (VOC determination via sorbent tube sampling and TD-GC/MS) and HJ 583-2010 (Solid Adsorption/Thermal Desorption GC method).
- Indoor Air Quality (IAQ): Fully compliant with GB/T 18883-2022 (Indoor Air Quality Standard) and GB 50325-2020 (Code for Indoor Environmental Pollution Control of Civil Building Engineering).
- Automotive Cabin Testing: Complies with HJ/T 400-2007 (Determination of VOCs and carbonyl compounds in vehicles).
FAQ
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Q: How to get more information about the product?A: You can contact us via email at info@zhpmchem.com or WhatsApp at +8618321309391 for more information about our products and company.
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Q: Does the product meet our requirements regarding formulation, equipment, and processing?A: Yes, we will adjust the product formulation to your specific needs, ensuring it meets your processing requirements.