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| Brand | Aerodyne |
|---|---|
| Origin | USA |
| Model | Aerodyne N2O |
| Instrument Type | Stable Gas Isotope Ratio Mass Spectrometer (IRMS) Equivalent |
| Detection Principle | Tunable Infrared Laser Direct Absorption Spectroscopy (TILDAS) |
| Measurement Targets | N₂O, δ¹⁵Nα (¹⁵N¹⁴N¹⁶O), δ¹⁵Nβ (¹⁴N¹⁵N¹⁶O), δ¹⁸O (N₂O) |
| Detection Limit | <1 ppt (v/v) for N₂O |
| Temporal Resolution | 1–10 Hz (configurable) |
| Path Length Options | 76 m or 400 m multipass cell |
| Precision (100 s) | δ¹⁵Nα ≤ 0.08‰, δ¹⁵Nβ ≤ 0.5‰, δ¹⁸O ≤ 0.5‰ |
| Operating Temperature Range | 10–35 °C (ambient) |
| with thermostatic enclosure | −20 to +40 °C |
| Temperature Stability | ±0.1 °C at setpoint (typically 30 °C) |
| Power Requirement | 500 W, 120/240 VAC, 50/60 Hz (pump excluded) |
| Dimensions (76 m) | 650 × 430 × 270 mm (W×D×H) |
| Weight | 35 kg |
| Dimensions (400 m) | 560 × 770 × 640 mm |
| Weight | 75 kg |
| Sampling Flow Rate | 0–20 slpm |
| Data Interfaces | RS-232, USB, Ethernet |
| Time Synchronization | GPS-enabled NTP server support |
| Brand | Aerodyne |
|---|---|
| Origin | USA |
| Instrument Type | Stable Isotope Ratio Mass Spectrometry (IRMS)-Grade Laser Absorption Spectrometer |
| Measurement Principle | Tunable Infrared Laser Direct Absorption Spectroscopy (TILDAS) with Astigmatic Multipass Cell |
| Detection Limits | Sub-ppt for N₂O, CH₄ |
| δ¹³C-CO₂ precision | 0.02‰ (120 s) |
| δ¹⁸O-CO₂ precision | 0.03‰ (120 s) |
| Sampling Frequency | 1–10 Hz configurable |
| Certified Compliance | ASTM D6348, ISO 13877 (adapted), GLP/GMP-ready data audit trail per FDA 21 CFR Part 11 |
| Software | TDLWINTEL v5.2 with HITRAN spectral replay, zero-spectrum background subtraction, real-time laser frequency stabilization, and passive cavity drift correction |
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