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| Brand | Tianhe Instruments |
|---|---|
| Model | TH-GS3 |
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Country of Origin | China |
| Power Supply | DC 12 V |
| Operating Current | 22 mA |
| Power Consumption | 0.26 W |
| Communication | RS-485 Modbus RTU |
| Measurement Layers | 3 standard (customizable up to 10) |
| Temperature Range | −30–70 °C |
| Temp. Accuracy | ±0.3 °C (−10–70 °C) |
| Temp. Resolution | 0.01 °C |
| Volumetric Water Content Range | 0–100 % |
| VWC Accuracy | ±3 % (mineral soils, <12 % organic carbon, <45 % clay) |
| VWC Resolution | 0.1 % |
| Electrical Conductivity Range | 0–20,000 µS/cm |
| EC Accuracy | ±3 % (0–10,000 µS/cm), ±5 % (full scale) |
| EC Resolution | 1 µS/cm |
| IP Rating | IP67 |
| Startup Time | 60 s |
| Housing Material | Imported polycarbonate (PC) |
| Electrode Design | Helical capacitive sensing geometry |
| Calibration | Onboard auto-calibration algorithm |
| Wireless Option | Optional LoRaWAN/NB-IoT gateway integration |
| Brand | Tianhe (Shandong Tianhe Environmental Technology Co., Ltd.) |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | TH-TS400 |
| Price | USD 695 (FOB Qingdao) |
| Power Supply | Solar-powered with MPPT charge controller |
| Communication | GPRS, Bluetooth 4.2, RS485 (optional wired interface) |
| Display | 7-inch low-temperature Android panel (v4.4.2, Quad-core Cortex-A7, 512MB RAM / 4GB storage) |
| Enclosure | IP66-rated ABS weatherproof housing |
| Deployment Time | ≤30 minutes by single operator |
| Data Storage Capacity | ≥500,000 records |
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