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| Brand | Davis |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Instrument |
| Model | 6470 |
| Instrument Type | Soil Temperature Sensor |
| Sensor Element | Precision Thermistor |
| Measurement Range | −40 to +65 °C |
| Accuracy | ±0.5 °C |
| Resolution | 1 °C (user-selectable) |
| Time Constant | 100 s (in air), 28 s (in liquid) |
| Cable Length | 4.6 m |
| Cable Gauge | 22 AWG, direct-burial rated, tin-plated conductors |
| Enclosure Material | 316 stainless steel body with epoxy encapsulation and vinyl strain relief |
| Probe Dimensions | 8 mm diameter × 64 mm length |
| Weight | 128 g |
| Output | Analog resistance (variable resistor), 2-wire configuration (black = common, white = signal) |
| Brand | Campbell Scientific |
|---|---|
| Model | IRGASON |
| Origin | USA |
| Type | Integrated Open-Path Eddy Covariance System |
| Operating Temperature | −30 to +50 °C |
| Operating Pressure | 70–106 kPa (expandable) |
| Supply Voltage | 10–16 VDC |
| Average Power Consumption | 5 W @ 25 °C |
| Measurement Frequency | 60 Hz |
| Output Bandwidth Options | 5, 10, 12.5, 20 Hz |
| Data Output Interfaces | SDM, RS-485, USB, Analog (CO₂/H₂O only) |
| Gas Path Length | 15.37 cm |
| CO₂ Accuracy | ±1% of reading |
| H₂O Accuracy | ±2% of reading |
| CO₂ Precision (RMS) | 0.2 mg/m³ (0.15 µmol/mol) |
| H₂O Precision (RMS) | 0.004 g/m³ (0.006 mmol/mol) |
| CO₂ Calibration Range | 0–1,000 µmol/mol (extendable to 3,000 µmol/mol) |
| H₂O Calibration Range | 0–72 mmol/mol (at 38 °C dew point) |
| CO₂ Temperature-Dependent Gain Drift | ±0.1% reading/°C |
| H₂O Temperature-Dependent Gain Drift | ±0.3% reading/°C |
| CO₂–H₂O Cross-Sensitivity | ±1.1×10⁻⁴ mol CO₂/mol H₂O |
| H₂O–CO₂ Cross-Sensitivity | ±0.1 mol H₂O/mol CO₂ |
| Ultrasonic Anemometer Path Lengths | Vertical 10.0 cm, Horizontal 5.8 cm |
| Wind Speed Range (uₓ/uᵧ) | ±65 m/s |
| Wind Speed Range (u_z) | ±8 m/s |
| Wind Direction Range | 2.5°–357.5° (0–360° customizable) |
| Ultrasonic Temperature Range | −50 to +60 °C |
| uₓ/uᵧ Offset Error | <±8.0 cm/s |
| u_z Offset Error | <±4.0 cm/s |
| Wind Direction Offset Error | ±0.7° |
| Gain Error (at ±5° tilt) | <±2% reading |
| uₓ/uᵧ Precision (RMS) | 1 mm/s |
| u_z Precision (RMS) | 0.5 mm/s |
| Wind Direction Precision (1 m/s wind) | 0.06° |
| Ultrasonic Temperature Precision | 0.0025 °C |
| Total Mass | 6 kg |
| Warranty | 3 years from factory shipment or 17,500 operational hours, whichever occurs first |
| Brand | Campbell Scientific |
|---|---|
| Model | CPEC310 |
| Origin | USA |
| System Type | Closed-path eddy covariance flux measurement system |
| Power Consumption | 12 W @ 25°C |
| Operating Temperature | −30 to +50°C |
| Operating Pressure Range | 70–106 kPa (expandable) |
| Measurement Frequency | 60 Hz |
| Output Rates | 5, 10, 12.5, or 20 Hz |
| Data Interfaces | SDM, RS-485, USB, analog (CO₂/H₂O only) |
| Total Mass | 15.36 kg |
| Warranty | 1 year from shipment |
| Gas Analyzer Sample Cell Volume | 5.9 mL |
| Cutoff Frequency | 4.3 Hz |
| CO₂ Accuracy | ±1% of reading |
| H₂O Accuracy | ±2% of reading |
| CO₂ Precision (RMS) | ≤0.15 µmol/mol |
| H₂O Precision (RMS) | ≤0.006 mmol/mol |
| CO₂ Zero Drift | ±0.3 µmol/mol/°C |
| H₂O Zero Drift | ±0.05 mmol/mol/°C |
| CO₂ Gain Drift | ±0.1% reading/°C |
| H₂O Gain Drift | ±0.3% reading/°C |
| Cross-sensitivity | CO₂ → H₂O: ±1.1×10⁻⁴ mol CO₂/mol H₂O |
| H₂O → CO₂ | ±0.1 mol H₂O/mol CO₂ |
| CSAT3A Path Lengths | Vertical 10.0 cm, Horizontal 5.8 cm |
| Wind Speed Range | uₓ/uᵧ ±65 m/s, u_z ±8 m/s |
| Wind Direction Range | 2.5°–357.5° (0–360° customizable) |
| Sonic Temperature Range | −50 to +60°C |
| Sonic Temperature Precision | 0.0025°C RMS |
| Brand | RainWise |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Instrument |
| Model | SM |
| Instrument Type | Soil Water Potential (Tensiometric) Sensor |
| Measurement Range | 0–200 cbar |
| Resolution | 1 cbar |
| Sensing Principle | Electrical Resistance (Calibrated to Matric Potential) |
| Cable Length | 4.6 m |
| Weight | 103 g |
| Brand | Spectrum |
|---|---|
| Origin | USA |
| Model | Soilstik |
| pH Range | 0.00–14.00 |
| pH Resolution | 0.01 |
| pH Accuracy | ±0.01 |
| Temperature Range | −5 °C to +90 °C |
| Temperature Resolution | 0.1 °C (−5 °C to +50 °C), 1 °C (+50 °C to +90 °C) |
| Temperature Accuracy | ±1 °C (−5–50 °C), ±3 °C (50–90 °C) |
| Calibration | Two-point (pH 4.01 and pH 7.00) |
| Display | LCD with real-time pH and temperature |
| Auto-Temperature Compensation (ATC) | Yes |
| IP Rating | IP67-rated waterproof housing |
| Power | Four CR2032 coin cells |
| Auto-Off | After 10 minutes of inactivity |
| Data Storage | 15 readings |
| Dimensions | 35.6 × 172.7 × 40.6 mm |
| Weight | 110 g |
| Electrode Status Indication | “RENEW” flash alert |
| Battery Low Alert | “BAT” display |
| Brand | Davis |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 6440 |
| Instrument Type | Soil Water Potential (Tensiometric) Sensor |
| Sensor Principle | Electrical Resistance (Watermark® Technology) |
| Cable Length | 4.6 m (standard), up to 300 m (with 18 AWG UF cable) |
| Housing Dimensions | 22 mm Ø × 76 mm |
| Weight | 103 g |
| Output Resolution | 1 cbar |
| Measurement Range | 0–200 cbar |
| Update Interval | 62.5–75 s |
| Compatible Base Stations | Davis 6345 Wireless Soil & Leaf Wetness Station |
| System Integration | Vantage Pro and Vantage Pro2 Weather Stations |
| Cable Specification | Two-conductor, tinned, stripped Watermark®-compliant wire |
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