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| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SO-110, SO-120, SO-210, SO-220 |
| Measurement Range | 0–100 % O₂ |
| Output Sensitivity | 2.6 mV/%O₂ (SO-110/SO-210), 0.6 mV/%O₂ (SO-120/SO-220) |
| Output at 20.95 %O₂ | 6 mV (SO-110), 3 mV (SO-120), 55 mV (SO-210), 12.5 mV (SO-220) |
| Repeatability | ±0.001 %O₂ |
| Nonlinearity | <0.01 %O₂ |
| Long-term Drift | 1 mV/year (SO-110/SO-210), 0.8 mV/year (SO-120/SO-220) |
| Response Time (t₉₀) | 60 s (SO-110/SO-120), 14 s (SO-210/SO-220) |
| Operating Temperature | –20 to +60 °C |
| Relative Humidity Range | 0–100 % RH |
| Pressure Range | 60–140 kPa |
| Supply Voltage | 12 V DC (with heater), 2.5 V DC (for thermistor excitation) |
| Heater Current | 6.2 mA |
| Thermistor Excitation Current | 0.1 mA |
| Sensor Dimensions | 32 mm Ø × 68 mm L |
| Diffusion Probe (optional) | 35 mm Ø × 35 mm L, 125-mesh stainless steel screen |
| Flow-through Probe (optional) | 32 mm Ø × 91 mm L, 0.25″ nylon connector |
| Housing Material | Anodized aluminum or polypropylene |
| Internal Temperature Sensor | Yes, for thermal compensation |
| Heating Element | Integrated, prevents membrane condensation |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | SWHMS |
| Instrument Type | Multi-parameter Soil Monitoring System |
| Compliance | ASTM D5084, ISO 18643, USCRN Protocols, GLP-aligned Data Logging |
| Power Supply | 6–17 VDC |
| Communication | SDI-12, RS-232/RS-485 (via CR1000X) |
| Operating Temperature | −40 °C to +85 °C |
| Enclosure Rating | IP67/IP68 (sensor-specific) |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | TDR315N |
| Instrument Type | Soil Moisture / Water Potential Analyzer |
| Volumetric Water Content Range | 0–100% VWC |
| Resolution | 0.1% VWC |
| Accuracy | ±2% FS |
| Dielectric Constant Range | 1–100 |
| Resolution | 0.1 |
| Accuracy | ±2% |
| Bulk EC Range | 0–6000 µS/cm |
| Pore Water EC (Hilhorst Model) | 0–55,000 µS/cm |
| EC Resolution | 1 µS/cm |
| EC Accuracy | ±25 µS/cm (0–1000 µS/cm), ±2.5% (1000–2000 µS/cm), ±5% (2000–5000 µS/cm) |
| Temperature Range | −40 to +60 °C |
| Temp Accuracy | ±0.25 °C (5–35 °C), ±0.5 °C (−15 to +50 °C) |
| Temp Resolution | 0.1 °C |
| Rise Time (20–80%) | 300 ps |
| Waveform Digitization Resolution | 5 ps |
| Input Voltage | 6.5–15 V DC |
| Quiescent Current | 10 µA |
| Active Current | 118 mA @ 12 V DC |
| Output Interface | 3-wire SDI-12 v1.4 compliant |
| Probe Dimensions | 15 mm L × 3.5 mm Ø |
| Sensor Body | 210 mm × 53 mm × 20 mm |
| Weight (bare) | 105 g |
| Cable Length | 5 m standard (10 m optional) |
| Enclosure | Waterproof epoxy-filled housing |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | TDR305N |
| Instrument Type | Soil Moisture / Water Potential Analyzer |
| Volumetric Water Content Range | 0–100% VWC |
| Resolution | 0.1% VWC |
| Accuracy | ±2% FS |
| Repeatability (RMS) | 0.07% VWC |
| Dielectric Constant Range | 1–100 |
| Resolution | 0.1 |
| Accuracy | ±2% |
| Bulk EC Range | 0–3000 µS/cm |
| Stability | ±1% FS |
| Soil Temperature Range | −40 to +60 °C |
| Resolution | 0.1 °C |
| Accuracy | ±0.25 °C (5–35 °C), ±0.5 °C (−15–50 °C) |
| Pore Water EC (Hilhorst Model) | 0–55,000 µS/cm |
| Volume EC Resolution | 1 µS/cm |
| Repeatability | 3 µS/cm |
| Accuracy | ±25 µS/cm (0–1000 µS/cm), ±2.5% (1000–2000 µS/cm), ±5% (2000–5000 µS/cm) |
| Rise Time (20–80%) | 300 ps |
| Waveform Digitization Resolution | 5 ps |
| Incident Pulse Amplitude | 2.3 V |
| Power Supply | 6.5–15 V DC |
| Quiescent Current | 10 µA |
| Active Current | 118 mA @ 12 V DC |
| Output Interface | 3-wire SDI-12 v1.4 compliant |
| Probe Dimensions | 49.9 mm × Ø3.5 mm |
| Body Dimensions | 150 × 33 mm |
| Weight (no cable) | 121 g |
| Standard Cable Length | 5 m (optional: 10 m) |
| Housing | Waterproof epoxy-filled enclosure |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | TDR305W |
| Measurement Principle | Time-Domain Reflectometry (TDR) |
| Output Interface | 3-wire SDI-12 v1.4 compliant |
| Volumetric Water Content Range | 0–100% VWC |
| Resolution | 0.1% VWC |
| Accuracy | ±5% FS |
| Bulk EC Range | 0–9000 µS/cm |
| Pore Water EC (Hilhorst model) | 0–55,000 µS/cm |
| EC Accuracy | ±25 µS/cm (0–1000 µS/cm), ±2.5% (1000–2500 µS/cm), ±5% (2500–6000 µS/cm), ±7.5% (6000–9000 µS/cm) |
| Dielectric Constant Range | 1–100 |
| Resolution | 0.1 |
| Accuracy | ±4% |
| Temperature Range | −40 to +55 °C |
| Resolution | 0.1 °C |
| Accuracy | ±0.25 °C (5–35 °C), ±0.5 °C (−15–50 °C) |
| Waveform Digitization Resolution | 5 ps |
| Input Pulse Amplitude | 2.3 V |
| Housing | Waterproof epoxy-filled enclosure |
| Power Supply | 4.2–15 V DC |
| Quiescent Current | <26 µA |
| Active Current | 90 mA @ 12 V DC |
| Dimensions (sensor head) | 110 × 53 × 20 mm |
| Probe Length | 49.55 mm |
| Probe Diameter | 3.5 mm |
| Weight (bare sensor) | 94 g |
| Standard Cable Length | 5 m (optional: 10 m) |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | RD1200 |
| Instrument Type | Soil Moisture / Water Potential Analyzer |
| Measurement Principles | TDR (Time Domain Reflectometry) with Integrated Dielectric, Thermal, and Conductivity Sensing |
| Soil Volumetric Water Content Range | 0–100% VWC |
| Resolution | 0.1% VWC |
| Accuracy | ±1% VWC (coarse-medium soils), ±2.5% VWC (fine-textured soils) |
| Soil Temperature Range | −40 to +60 °C |
| Resolution | 0.1 °C |
| Accuracy | ±0.25 °C |
| Dielectric Constant Range | 1–80 |
| Resolution | 0.1 |
| Accuracy | ±1% (coarse-medium), ±2% (fine-textured) |
| Bulk Electrical Conductivity (ECb) | 0–5000 μS/cm |
| Pore Water Electrical Conductivity (ECw) | 0–55,000 μS/cm |
| EC Resolution | 1 μS/cm |
| EC Accuracy | ±25 μS/cm (0–1000 μS/cm), ±2.5% (1000–2000 μS/cm), ±5% (2000–5000 μS/cm) |
| GPS Module | Integrated SDI-12-compatible GNSS receiver (latitude, longitude, altitude, UTC time sync) |
| Data Storage | Internal non-volatile memory + USB 2.0 interface supporting up to 25 GB flash drives |
| Power Supply | 5 VDC @ 1 A (AC adapter: 100–240 VAC input) |
| Dimensions | 150 × 80 × 25 mm |
| Weight | 0.3 kg |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | TDR310W |
| Sensor Type | TDR-based Volumetric Water Content, Soil Temperature & Bulk Electrical Conductivity Sensor |
| Measurement Principle | Time-Domain Reflectometry (TDR) with Ultra-High-Speed Waveform Generation & 5 ps Timebase Resolution |
| Output Interface | 3-Wire SDI-12 v1.4 Compliant |
| Probe Length | 100 mm |
| Probe Diameter | 3.5 mm |
| Housing | Waterproof Epoxy-Filled Enclosure |
| Power Supply | 6.5–15 V DC |
| Quiescent Current | 10 µA |
| Active Current | 118 mA @ 12 V DC |
| Operating Temperature | –40 °C to +60 °C |
| Cable Length | 5 m (standard), optional 10 m |
| Weight | 94 g (sensor head only) |
| Dimensions (housing) | 160 × 53 × 20 mm |
| Volumetric Water Content Range | 0–100 % VWC |
| VWC Resolution | 0.1 % VWC |
| VWC Accuracy | ±2 % FS |
| VWC Repeatability (RMS) | 0.07 % VWC |
| Dielectric Constant Range | 1–100 |
| Dielectric Resolution | 0.1 |
| Dielectric Accuracy | ±2 % |
| Bulk EC Range | 0–6000 µS/cm |
| Bulk EC Resolution | 1 µS/cm |
| Bulk EC Accuracy | ±25 µS/cm (0–1000 µS/cm), ±2.5% (1000–2000 µS/cm), ±5% (2000–5000 µS/cm) |
| Pore Water EC (Hilhorst model) | 0–55,000 µS/cm |
| Soil Temperature Range | –40 °C to +60 °C |
| Temp Resolution | 0.1 °C |
| Temp Accuracy | ±0.25 °C (5–35 °C), ±0.5 °C (–15–50 °C) |
| Temp Repeatability (RMS) | 0.01 °C |
| Rise Time (20–80%) | 300 ps |
| Waveform Digitization Resolution | 5 ps |
| Incident Pulse Amplitude | 2.3 V |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | TDT |
| Instrument Type | Volumetric Water Content (VWC) and Bulk Electrical Conductivity (EC) Sensor |
| Measurement Principle | Time Domain Transmission (TDT) |
| VWC Range | 0–100.00% VWC |
| VWC Resolution | 0.06% VWC |
| VWC Accuracy | ±2% VWC (typical mineral soils) |
| Bulk EC Range | 0–5 dS/m |
| Bulk EC Resolution | 0.01 dS/m |
| Bulk EC Accuracy | ±0.2 dS/m |
| Bulk EC Stability | ±1% of full scale (0–5 dS/m) |
| Soil Temperature Range | –20 to +50 °C |
| Soil Temperature Resolution | 0.1 °C |
| Soil Temperature Accuracy | ±0.3 °C (0–40 °C), ±0.5 °C (–20–0 °C and 40–50 °C) |
| Response Time | 450 ms |
| Power Supply | 5–15 VDC (12 VDC nominal) |
| Current Draw | 84 mA (during measurement burst) |
| Output Protocol | SDI-12 v1.3 |
| Operating Temperature (in soil) | 0.5–50 °C (non-frozen conditions) |
| Storage Temperature | –20 to +75 °C |
| Dimensions | 20 × 5.33 × 1.5 cm |
| Weight | 220 g |
| Cable Length | 10 m |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Instrument |
| Model | TDR315H |
| Instrument Type | Volumetric Water Content / Soil Water Potential Analyzer |
| VWC Range | 0–100% |
| VWC Resolution | 0.1% |
| VWC Repeatability (RMS) | ±0.07% |
| VWC Accuracy | ±1% (coarse-medium soils), ±2.5% (fine-textured soils) |
| Dielectric Constant Range | 1–80 |
| Dielectric Resolution | 0.1 |
| Dielectric Accuracy | ±1% (coarse-medium), ±2% (fine-textured) |
| Soil Temperature Range | −40 to +60 °C |
| Temp Resolution | 0.1 °C |
| Temp Accuracy | ±0.25 °C |
| Bulk EC Range | 0–5000 µS/cm |
| Pore Water EC Range | 0–55,000 µS/cm |
| EC Resolution | 1 µS/cm |
| EC Repeatability | ±3 µS/cm |
| EC Accuracy | ±25 µS/cm (0–1000 µS/cm), ±2.5% (1000–2000 µS/cm), ±5% (2000–5000 µS/cm) |
| Response Time | 0.25 s |
| Power Supply | 3.5–15 V DC |
| Operating Current | 36 mA @ 12 V DC (active), <10 µA (idle) |
| Output Protocol | SDI-12 |
| Probe Length | 15 cm |
| Probe Diameter | 0.35 cm |
| Housing Dimensions | 21.15 × 5.3 × 1.9 cm |
| Weight | 440 g (body only) |
| Brand | Acclima, Inc. |
|---|---|
| Origin | USA |
| Model | TDR310N |
| Sensor Type | TDR-based Volumetric Water Content, Soil Temperature, and Bulk Electrical Conductivity Sensor |
| Measurement Principle | Time-Domain Reflectometry (TDR) with 5 ps timebase resolution |
| Output Interface | 3-wire SDI-12 v1.4 compliant |
| Power Supply | 6.5–15 V DC |
| Idle Current | 10 µA |
| Active Current | 118 mA @ 12 V DC |
| Probe Dimensions | 99.2 mm × Ø3.5 mm |
| Body Dimensions | 200 mm × 33 mm |
| Weight (sensor only) | 132 g |
| Standard Cable Length | 5 m (optional 10 m) |
| Enclosure | Waterproof epoxy-filled housing |
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