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| Brand | Picarro |
|---|---|
| Origin | USA |
| Model | G2307 |
| Portability | Portable |
| Response Time | < 5 s |
| Repeatability | H₂CO, CH₄, and H₂O |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Detection Limits (3σ, 300 s) | 0.18 ppb (H₂CO), 0.3 ppb (CH₄) |
| Long-Term Drift (24 h, STP) | 1.5 ppb (H₂CO) |
| Temperature Control Stability | ±0.005 °C |
| Pressure Control Stability | ±0.0002 atm |
| Sample Flow Rate | ~400 sccm at 760 Torr |
| Operating Temperature Range | 10–35 °C |
| Dimensions (Analyzer) | 43.2 × 17.9 × 44.6 cm |
| Weight (Analyzer) | 21.3 kg |
| Brand | Picarro |
|---|---|
| Origin | USA |
| Model | G4301 |
| Portability | Portable |
| Response Time | 5 s |
| Repeatability | CO₂, CH₄, H₂O |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Power Consumption | 25 W |
| Battery Life | Up to 8 h |
| Dimensions | 35.6 × 17.7 × 46.4 cm |
| Weight | 10.4 kg |
| Operating Temperature | 10–45 °C |
| Relative Humidity | <85% non-condensing |
| Sample Flow Rate | ~1 SLPM |
| Detection Limits (3σ, 300 s) | CO₂: 0.12 ppm, CH₄: 0.9 ppb, H₂O: N/A |
| Accuracy (5 s) | CO₂: 0.4 ppm + 0.1% of reading, CH₄: 3 ppb + 0.1% of reading, H₂O: 100 ppm + 5% of reading |
| Drift (24 h) | CO₂: 0.5 ppm (typ. 0.18 ppm), CH₄: 1 ppb (typ. 0.56 ppb) |
| Measurement Range | CO₂: 0–3%, CH₄: 0–800 ppm, H₂O: 0–3% (non-condensing) |
| Brand | Picarro |
|---|---|
| Origin | USA |
| Model | G2508 |
| Instrument Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Type | Benchtop / Portable Configurable System |
| Response Time | < 8 s (10–90% rise/fall) |
| Repeatability | N2O/CH4/CO2/NH3/H2O |
| Measurement Sensitivity | Sub-ppb for N2O, CH4, CO2, NH3 |
| Operating Environment | 10–35 °C, <85% RH (non-condensing) |
| Sample Pressure | 300–1000 Torr (40–133 kPa) |
| Sample Flow Rate | ~230 sccm |
| Cavity Temperature Stability | ±0.005 °C |
| Cavity Pressure Stability | ±0.0002 atm |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 915-0011 |
| Response Time | 1 s |
| Repeatability | CH₄ < 0.25 ppb (100 s), CO₂ < 40 ppb (100 s), H₂O < 15 ppm (100 s) |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Form Factor | Portable |
| Power Consumption | 60 W (DC), 66 W (AC) |
| Dimensions | 17.8 cm H × 47 cm W × 35.6 cm D |
| Weight | 15 kg |
| Operating Temperature | 5–45 °C |
| Sample Temperature Range | −10–50 °C |
| Relative Humidity | 0–100% RH (non-condensing) |
| Detection Limits (1σ, 100 s) | CH₄: 0.25 ppb, CO₂: 40 ppb, H₂O: 15 ppm |
| Full-Scale Linear Range | CH₄: 0.01–100 ppm (extendable to 10% vol), CO₂: 1–20,000 ppm, H₂O: 500–70,000 ppm (0–100% RH) |
| Data Output | RS-232, Analog, Ethernet, USB |
| Accuracy | <1% uncertainty (uncalibrated, 10–35 °C) |
| Sampling Rate | 0.01–1 Hz |
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