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| Brand | LGR |
|---|---|
| Origin | USA |
| Model | DLT-100 (Benchtop), RMT-200 (Portable) |
| Detection Principle | Off-Axis Integrated Cavity Output Spectroscopy (Off-Axis ICOS) |
| Measurement Range | 0.3–25 ppm CH₄ |
| Precision | 1 ppb @ 1 Hz (ambient conditions) |
| Response Time | <0.05 s (with external pump), 25 s (internal pump) |
| Accuracy | Better than ±1% of reading |
| Operating Temperature | 0–50 °C |
| Relative Humidity | <98% RH, non-condensing |
| Data Output | RS-232, Analog (0–10 V / 4–20 mA), Ethernet |
| Data Storage | Internal 20 GB HDD + 12.1" color TFT display |
| Power | 115/230 V AC, 50/60 Hz, 80 W (excl. optional external pump) |
| Dimensions (Benchtop) | 25.4 × 96.5 × 35.56 cm |
| Dimensions (Portable) | 22.2 × 48.26 × 60.9 cm |
| Weight | 27 kg |
| Compliance | Designed for field-deployable, unattended operation |
| Brand | Picarro |
|---|---|
| Origin | USA |
| Model | PI2114 |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Detection Limit | <3 ppb (3σ, 300 s) |
| Accuracy | <1 ppb + 0.1% of reading (1σ, 300 s) |
| Precision (5-min) | <0.5 ppb (1σ) |
| Response Time (10–90% / 90–10%) | <60 s |
| Measurement Range | 0–100 ppm |
| Sample Flow Rate | <1 slm at 760 Torr |
| Operating Temperature | –10 to 45 °C |
| Sample Pressure | 300–1000 Torr (40–133 kPa) |
| Relative Humidity | <99% RH, non-condensing at 40 °C |
| Certified | CE Mark, CDRH |
| Compliance | FDA 21 CFR Part 11, GMP-ready |
| Brand | LGR |
|---|---|
| Origin | USA |
| Model | FGGA |
| Type | Off-Axis Integrated Cavity Output Spectroscopy (Off-Axis ICOS) Analyzer |
| Detection Targets | CH₄, CO₂, H₂O |
| Repeatability | CH₄ ≤ 1 ppbv, CO₂ ≤ 0.2 ppmv, H₂O ≤ 100 ppmv |
| Response Time | 0.1 s (with external DSVP pump), 25 s (with internal pump) |
| Mirror Reflectivity | >99.999% |
| Accuracy | <1% of reading |
| Measurement Ranges | CH₄: 0.1–10,000 ppmv (standard), down to 0.005 ppmv (optional) |
| CO₂ | 200–20,000 ppmv (standard), up to 20,000 ppmv (optional) |
| H₂O | 7,000–80,000 ppmv (standard), 1,500–80,000 ppmv (optional) |
| Effective Optical Path Length | ~2.5 km (typical, based on 25 cm cavity with 99.999% mirrors) |
| Data Storage | 40 GB internal SSD |
| Display | 12.1" color TFT (desktop only) |
| Sample Temperature Range | 0 °C |
| Operating Temperature | 5–40 °C |
| Operating Humidity | 0–98% RH (non-condensing) |
| Gas Inlet Fittings | 1/4", 3/8", or 1/2" Swagelok® |
| Power | 115/230 VAC, 50/60 Hz, 90 W (DC conversion supported) |
| Dimensions (Desktop) | 25 × 96 × 35 cm |
| Dimensions (Portable) | 22 × 48 × 61 cm |
| Weight | 30 kg (desktop), ~18 kg (portable) |
| Key | Brand: Picarro |
|---|---|
| Origin | USA |
| Model | G2308 |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Target Gases | Nitrous Oxide (N₂O), Methane (CH₄), Water Vapor (H₂O) |
| N₂O Precision (1σ, 5 min) | <3.5 ppb + 0.008% of reading |
| CH₄ Precision (1σ, 5 min) | <3 ppb + 0.02% of reading |
| H₂O Precision (1σ, 5 min) | <100 ppm |
| Detection Limits | N₂O ≤10 ppb (1-min), CH₄ ≤7 ppb (1-min), H₂O ≤250 ppm (1-min) |
| Sample Flow Rate | ~230 sccm |
| Operating Pressure Range | 300–1000 Torr (40–133 kPa) |
| Temperature Control Stability | ±0.005 °C (cavity) |
| Pressure Control Stability | ±0.0002 atm (cavity) |
| Dimensions (W×H×D) | 43.2 × 17.8 × 44.6 cm |
| Weight | 22.6 kg |
| Power | 100–240 VAC, 47–63 Hz, 110 W (steady-state) |
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