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| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SO-220 |
| Measurement Range | 0–100% O₂ |
| Accuracy (Stability) | ±0.05% O₂ (under stable ventilation) |
| Repeatability | ±0.001% O₂ (10 ppm) |
| Operating Temperature | −20 to +60 °C |
| Relative Humidity Range | 0–100% RH |
| Pressure Range | 60–140 kPa |
| Response Time (t₉₀) | 12 s |
| Output Signal | 12 mV at 20.95% O₂ |
| O₂ Consumption Rate | 2.2 µmol/day at 20.95% O₂, 23 °C |
| Interferent Resistance | CO₂, CO, NO, NO₂, H₂S, H₂, CH₄ — no interference |
| Power Supply | 12 V for heater, 2.5 V for thermistor activation |
| Cable | 5 m foil-shielded |
| Diffusion Cap (optional) | 3.5 cm L × 3.5 cm Ø, 125 vent holes |
| Flow-through Cap (optional) | 3.2 cm L × 3.2 cm Ø, 1/8″ conical adapter for tubing |
| Integrated Temperature Sensor | Thermocouple |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SO-210 Ambient Oxygen Sensor |
| Measurement Range | 0–100% O₂ |
| Accuracy (Stability) | ±0.05% O₂ (under stable ventilation) |
| Repeatability | ±0.001% O₂ (10 ppm) |
| Operating Temperature | −20 to +60 °C |
| Relative Humidity Range | 0–100% RH |
| Pressure Range | 60–140 kPa |
| Response Time (t₉₀) | 12 s |
| Output Signal | 12 mV at 20.95% O₂ |
| O₂ Consumption Rate | 2.2 µmol/day at 20.95% O₂, 23 °C |
| Cross-Sensitivity | Negligible to CO₂, CO, NO, NO₂, H₂S, H₂, CH₄ |
| Power Supply | 12 V for heater, 2.5 V for thermistor excitation |
| Cable | 5 m foil-shielded twisted pair |
| Optional Diffusion Cap | 3.5 cm L × 3.5 cm Ø, 125 vent holes |
| Optional Flow-Through Cap | 3.2 cm L × 3.2 cm Ø, 1/8″ conical hose adapter |
| Integrated Temperature Sensor | NTC thermistor |
| Weight | 175 g |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | MO-200 |
| Measurement Principle | Galvanic Electrochemical Cell (Pb/Au, Teflon Membrane) |
| O₂ Range | 5–100 % vol |
| Repeatability | ±0.1 % at 20.9 % O₂ |
| Nonlinearity | <1 % FS |
| Response Time (t₉₀) | 14 s |
| Operating Temp. | 0–50 °C, RH <90 %, 60–150 kPa |
| Interference | Immune to CO₂, CO, NO, NO₂, H₂S, H₂, CH₄ |
| Probe Diameter | 32 mm, Length: 68 mm |
| Diffusion Cap (A0-001) | Ø35 mm × 35 mm |
| Flow-Through Cap (A0-002) | Ø32 mm × 91 mm |
| Cable Length | 2 m |
| Data Logger | 99 manual entries, 99 × 30-min averages, 99 daily means |
| Logger Dimensions | 126 × 70 × 24 mm |
| Integrated Temperature Sensor | Yes |
| Housing Material | Chemically resistant polymer (acid-stable) |
| Heating Function | On-sensor membrane heater for condensation mitigation |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | MO-200 |
| Measurement Principle | Electrochemical (Galvanic Cell) |
| Range | 5–100 % O₂ |
| Repeatability | ±0.1 % at 20.9 % O₂ |
| Nonlinearity | <1 % |
| Response Time (t₉₀) | 14 s |
| Operating Temperature | 0–50 °C |
| Relative Humidity Limit | <90 % RH |
| Pressure Range | 60–150 kPa |
| Gas Interference | Immune to CO₂, CO, NO, NO₂, H₂S, H₂, CH₄ |
| Probe Body Dimensions | Ø32 mm × 68 mm |
| Diffusion Cap (A0-001) | Ø35 mm × 35 mm |
| Flow-Through Cap (A0-002) | Ø32 mm × 91 mm |
| Cable Length | 2 m |
| Data Logger Capacity | 99 manual entries |
| Display Unit Dimensions | 126 mm × 70 mm × 24 mm |
| Integrated Temperature Sensor | Yes |
| Heated Membrane | Yes |
| Enclosure Material | Acid-resistant polymer |
| Compliance | CE-marked per EN 61326-1 (EMC), EN 61010-1 (Safety) |
| Brand | Anasys |
|---|---|
| Origin | USA |
| Model | SMEC300 |
| Measurement Principles | Capacitive Volumetric Water Content (VWC), Four-Point Graphite Electrode EC, Precision Thermistor |
| Output | Analog Voltage (Time-Division Multiplexed) |
| VWC Range | 0–Saturation |
| VWC Resolution | 0.1% |
| VWC Accuracy | ±3% |
| EC Range | 0–10 mS/cm |
| EC Resolution | 0.01 mS/cm |
| EC Accuracy | ±2% |
| Temperature Range | −18 to +50 °C |
| Temp Resolution | 0.1 °C |
| Temp Accuracy | ±0.8 °C |
| Sensing Volume | 6 cm × 2 cm |
| Cable Options | 1.8 m, 6 m, extendable to 15 m |
| Power | 3 V DC @ 6–10 mA |
| Brand | Active Spectrum |
|---|---|
| Origin | USA |
| Model | WatchDog 3000 |
| Communication | Cellular + Bluetooth |
| Power | Integrated Solar Charging System |
| Enclosure Rating | NEMA-4 / IP66 |
| Data Logging | Built-in Non-Volatile Memory |
| External Sensor Ports | Up to 2 |
| Compliance | FCC Part 15, IC RSS-210, RoHS |
| Brand | Active Spectrum |
|---|---|
| Origin | USA |
| Model | pH 400, pH 600 |
| pH Accuracy | ±0.01 pH (pH400), ±0.005 pH (pH600) |
| pH Range | 0.00–14.00 |
| Temperature Range | −5 to 120 °C |
| Temperature Accuracy | ±0.5 °C |
| Temperature Resolution | 0.1 °C |
| pH Resolution | 0.01 (pH400), 0.005 (pH600) |
| Calibration Options | 1-point, 2-point (pH400) |
| Data Storage | 10 readings (pH400), 65,000 readings (pH600) |
| Enclosure Rating | IP65 |
| Power | 3 × rechargeable AA batteries (8 h charge time) |
| Probe Type | ISFET-based, glass-free, interchangeable sharp-tip (soil/solid media) and blunt-tip (liquid/non-soil media) probes |
| Auto Temperature Compensation (ATC) | Yes |
| Dimensions | 80 × 160 × 36 mm |
| Weight | 379 g |
| Brand | Active Spectrum |
|---|---|
| Origin | USA |
| Model | TDR350 |
| Instrument Type | Multi-parameter Soil Analyzer |
| Probe Length Options | 3.8 cm, 7.6 cm, 12 cm, 20 cm |
| Measurement Principle | Time-Domain Reflectometry (TDR) |
| Volumetric Water Content (VWC) Range | 0–saturation |
| VWC Resolution | 0.1% VWC |
| VWC Accuracy | ±3.0% (at EC < 2 mS/cm) |
| Temperature Range | −30°C to +60°C |
| Temperature Resolution | 0.1°C |
| Temperature Accuracy | ±1°C |
| EC Range | 0–5 mS/cm |
| EC Resolution | 0.01 mS/cm |
| EC Accuracy | ±0.1 mS/cm |
| Probe Diameter | 0.5 cm |
| Probe Spacing | 3.3 cm |
| Data Storage Capacity | >50,000 geotagged records |
| Display | Backlit LCD |
| Brand | Active Spectrum |
|---|---|
| Origin | USA |
| Model | SC900 |
| Measurement Units | PSI or kPa |
| Depth Resolution | 2.5 cm |
| Force Resolution | 5 PSI (35 kPa) |
| Depth Accuracy | ±1.25 cm |
| Force Accuracy | ±15 PSI (±103 kPa) |
| Penetration Range | 0–45 cm |
| Force Range | 0–1000 PSI (0–7000 kPa) |
| Max Insertion Speed | 182 cm/min |
| Max Load Capacity | 210 lb |
| Power | 4 × AAA alkaline batteries (≈12 months operation) |
| Data Storage | 772 soil profiles (GPS-off), 579 profiles (GPS/DGPS-enabled) |
| Display | 16-character × 2-line LCD |
| Weight | 1.25 kg |
| Cone Tip Diameter | 12.827 mm |
| Brand | WD Precision |
|---|---|
| Origin | Switzerland |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SwisensPoleno Jupiter |
| Price | USD 420,000 (FOB Zurich) |
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