- Multi-parameter Water Analyzer
- Single-Parameter Water Aalyzer
- DO Sensor
- Trace DO Sensor
- CO₂ Sensor
- COD Sensor
- EC TDS Sensor
- Salinity EC TDS Sensor
- TSS Sensor
- Turbidity Sensor
- PH Sensor
- ORP
- Ion Selective Sensor
- Ammonia Nitrogen Sensor
- Oil in Water Sensor
- Blue-Green Algae Sensor
- Chlorophyll Sensor
- Residual Chlorine Sensor
- Marine Current Sensor
0102030405
China RS485 Two-Electrode Conductivity EC CT/TDS Sensor for Wastewater Treatment - Suppliers & Factory Quality
Product Parameters
| Product Name | Two-Electrode Conductivity Sensor / TDS Sensor |
| Range | CT: 0–9999 μS/cm; 0–100 mS/cm TDS: 0–10000 ppm |
| Accuracy | 2.5% FS |
| Power | 9–24 VDC (Recommended: 12 VDC) |
| Material | Polymer Plastic |
| Size | 31 mm × 140 mm |
| Working Temperature | 0–50 ℃ |
| Cable Length | 5 m, extendable per user requirements |
| Sensor Interface | RS-485, MODBUS Protocol |
| IP Rating | IP68 |
Product Features
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⚡① High Stability & Anti-InterferenceIsolated power supply design and corrosion-resistant graphite electrode ensure stable performance in high-ionic or electrically noisy environments.
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📏② Wide Measurement RangeCovers conductivity from 10 μS/cm to 100 mS/cm and TDS up to 10000 ppm, suitable for diverse applications from ultrapure water to industrial wastewater.
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🌡️③ Built-In Temperature CompensationIntegrated NTC sensor provides real-time temperature correction, enhancing measurement accuracy across varying conditions.
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🎯④ Single-Point CalibrationSimplifies maintenance with a single calibration point, achieving 2.5% accuracy across the full range.
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🔩⑤ Robust ConstructionPolymer housing and G3/4 threaded design resist chemical corrosion and mechanical stress, ensuring longevity in submerged or high-pressure installations.
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🔗⑥ Seamless IntegrationRS-485 output with Modbus protocol enables easy connectivity to SCADA, PLCs, and IoT platforms for real-time data monitoring.
Application
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🏭1. Industrial Wastewater TreatmentMonitors conductivity and TDS in effluent streams to optimize desalination, chemical dosing, and compliance with discharge regulations.
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🐟2. Aquaculture ManagementTracks water salinity and dissolved solids to maintain optimal conditions for aquatic life, preventing over-mineralization.
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🌊3. Environmental MonitoringDeployed in rivers and lakes to assess water purity and detect contamination events, supported by the sensor's corrosion-resistant design.
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🔥4. Boiler / Cooling SystemsEnsures water quality in industrial cooling circuits by detecting scaling or ionic imbalances, reducing equipment corrosion risks.
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🌱5. Hydroponics & AgricultureMeasures nutrient solution conductivity to optimize fertilization and irrigation efficiency in precision farming.
Digital RS485 Water Quality Sensors Technical Data
| Parameter | Model | Range | Accuracy |
| DO Sensor | LMS-DO10B | 0–20 mg/L, 0–60 ℃ | ±0.1–0.3 mg/L |
| DO Sensor | LMS-DO10C | 0–20 mg/L, 0–60 ℃ | ±0.3 mg/L |
| Trace DO Sensor | LMS-TDO100 | 0–2000 ppb, 0–50 ℃ | ±1 ppb |
| PH Sensor | LMS-PH100 | 0–14 pH | ±0.02 pH |
| ORP Sensor | LMS-ORP100 | ±1000.0 mV | ±0.2 mV |
| EC/TDS Sensor | LMS-TDS102 | CT: 0–9999 μS/cm; 0–100 mS/cm TDS: 0–10000 ppm |
±2.5% FS |
| Salinity/EC/TDS Sensor | LMS-SAL104 | Conductivity: 0.1–500 mS/cm TDS: 0–60000 ppm Salinity: 0–500.00 ppt |
±1.5% FS |
| COD Sensor | LMS-COD100 | COD: 0.1–1500 mg/L TOC: 0.1–750 mg/L BOD: 0.1–900 mg/L Turbidity: 0.1–4000 NTU Temperature: 0–50 ℃ |
±5% equiv. KHP Temperature: ±0.5 ℃ |
| TSS Sensor | LMS-TSS100 | 0–50000 mg/L / 0–120000 mg/L | ±10% FS or 10 mg/L |
| Turbidity Sensor | LMS-TUR10L | 0–100 NTU | ±10% FS or 0.3 NTU |
| Turbidity Sensor | LMS-TUR10H | 0–3000 NTU | ±10% FS or 0.3 NTU |
| CO₂ Sensor | LMS-CO2100 | 2000 PPM / 10000 PPM / 50000 PPM | ±5% FS |
| Ammonia Nitrogen Sensor | LMS-NH4100 | 0–1000 mg/L | ±5% FS |
| Ion Selective Sensor | LMS-ION100 | 0–1000 mg/L | ±5% FS |
| Oil in Water Sensor | LMS-OIL100 | 0–50 mg/L; 0–5 mg/L | ±3% FS |
| Chlorophyll Sensor | LMS-CHL100 | 0–500 μg/L | ±3% FS |
| Blue-Green Algae Sensor | LMS-BGA100 | 0–2,000,000 cells/ml | ±3% FS |
| Residual Chlorine Sensor | LMS-HCLO100 | 0–20.00 ppm | ±5% FS |
| Marine Current Sensor | LMS-Current100 | Temperature: -3 ℃ – 45 ℃ Velocity: 0–500 cm/s Direction: 0–359.9° |
±0.05 ℃ ±1 cm/s or ±2% ±2° |
Frequently Asked Questions (FAQ)
Q What is the measurement range of the LMS-TDS102 EC/TDS sensor?
The LMS-TDS102 supports a conductivity range of 0–9999 μS/cm and 0–100 mS/cm, with a TDS range of 0–10000 ppm. This broad range makes it suitable for applications from ultrapure water monitoring to industrial wastewater treatment.
Q What communication protocol does the sensor support?
The sensor uses RS-485 output with Modbus RTU protocol, allowing seamless integration with SCADA systems, PLCs, data loggers, and IoT platforms for real-time remote monitoring.
Q Is the sensor suitable for outdoor or submerged installations?
Yes. The sensor carries an IP68 waterproof rating, meaning it is fully protected against continuous submersion in water. Its polymer housing and G3/4 threaded design also provide strong resistance to chemical corrosion and mechanical stress.
Q Does the sensor compensate for temperature variations?
Yes. An integrated NTC temperature sensor provides automatic real-time temperature compensation. This ensures reliable and accurate conductivity and TDS readings even when water temperature fluctuates during operation.
Q How is the sensor calibrated, and how often is calibration required?
The sensor uses a single-point calibration method, which is simple and fast. A single calibration point achieves 2.5% FS accuracy across the entire measurement range. Calibration frequency depends on the application environment, but periodic checks are recommended for high-precision monitoring.
Q Can the cable length be customized for long-distance installations?
The standard cable length is 5 meters, and it can be extended to meet specific installation requirements. Please contact us with your project details to confirm the maximum supported cable extension for your application.