- 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/TDS Sensor for Wastewater Treatment - Factory Direct from Suppliers
Product Parameters
| Product Name | Two-Electrode Conductivity Sensor/TDS Sensor |
| Range | CT: 0-9999uS/cm; 0-100mS/cm; TDS: 0-10000ppm |
| Accuracy | 2.5%FS |
| Power | 9-24VDC (Recommend 12 VDC) |
| Material | Polymer Plastic |
| Size | 31mm * 140mm |
| Working Temperature | 0-50℃ |
| Cable length | 5m, can be extended according to user need |
| Sensor Interface Supports | RS-485, MODBUS protocol |
| IP Rating | IP68 |
Product Features
High Stability & Anti-Interference
Isolated power supply design and corrosion-resistant graphite electrode ensure stable performance in high-ionic or electrically noisy environments.
Wide Measurement Range
Covers conductivity from 10μS/cm to 100mS/cm and TDS up to 10000ppm, suitable for diverse applications from ultrapure water to industrial wastewater.
Built-In Temperature Compensation
Integrated NTC sensor provides real-time temperature correction, enhancing measurement accuracy across varying conditions.
Single-Point Calibration
Simplifies maintenance with a single calibration point, achieving 2.5% accuracy across the full range.
Robust Construction
Polymer housing and G3/4 threaded design resist chemical corrosion and mechanical stress, ensuring longevity in submerged or high-pressure installations.
Seamless Integration
RS-485 output with Modbus protocol enables easy connectivity to SCADA, PLCs, and IoT platforms for real-time data monitoring.
Application
1. Industrial Wastewater Treatment
Monitors conductivity and TDS in effluent streams to optimize desalination, chemical dosing, and compliance with discharge regulations.
2. Aquaculture Management
Tracks water salinity and dissolved solids to maintain optimal conditions for aquatic life, preventing over-mineralization.
3. Environmental Monitoring
Deployed in rivers and lakes to assess water purity and detect contamination events, supported by the sensor’s corrosion-resistant design.
4. Boiler/Cooling Systems
Ensures water quality in industrial cooling circuits by detecting scaling or ionic imbalances, reducing equipment corrosion risks.
5. Hydroponics & Agriculture
Measures 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 | 0-20mg/L, 0-60℃ | ±0.1-0.3mg/L |
| DO sensor | LMS-DO10C | 0-20mg/L, 0-60℃ | ±0.3mg/L |
| Trace DO sensor | LMS-TDO100 | 0-2000ppb, 0-50℃ | ±1ppb |
| PH sensor | LMS-PH100 | 0-14pH | ±0.02pH |
| ORP sensor | LMS-ORP100 | ±1000.0 mV | ±0.2 mV |
| EC/TDS sensor | LMS-TDS102 | CT: 0-9999uS/cm; 0-100mS/cm; TDS: 0-10000ppm |
±2.5%FS |
| Salinity/EC/TDS sensor | LMS-SAL104 | Conductivity: 0.1-500 mS/cm TDS:0-60000ppm Salinity: 0-500.00ppt |
±1.5%FS |
| COD sensor | LMS-COD100 | COD:0.1-1500mg/L TOC:0.1-750mg/L BOD:0.1-900mg/L Turbidity: 0.1-4000NTU Temperature range: 0-50 ℃ |
±5% equiv.KHP Temperature: ± 0.5 ℃ |
| TSS sensor | LMS-TSS100 | 0-50000mg/L/ 0-120000mg/L | ±10%FS or 10 mg/L |
| Turbidity sensor | LMS-TUR10L | 0-100NTU | ±10%FS or 0.3 NTU |
| Turbidity sensor | LMS-TUR10H | 0-3000NTU | ±10%FS or 0.3 NTU |
| CO2 sensor | LMS-CO2100 | 2000PPM/10000PPM/50000PPM | ±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 | 0-500ug/L | ±3%FS |
| Blue-Green Algae sensor | LMS-BGA100 | 0-2000,000 cells/ml | ±3%FS |
| Residual Chlorine sensor | LMS-HCLO100 | 0 - 20.00 ppm | ±5%FS |
| Marine Current sensor | LMS-Current100 | Temperature: -3℃ - 45℃ Velocity of flow: 0-500 cm/s Flow direction: 0-359.9° |
±0.05℃ ±1 cm/s or ±2% ±2° |
Frequently Asked Questions (FAQ)
What is the measurement range of the Conductivity/TDS Sensor?
The sensor measures Conductivity (CT) in the range of 0-9999uS/cm and 0-100mS/cm, and Total Dissolved Solids (TDS) in the range of 0-10000ppm.
What communication protocols are supported by the sensor interface?
The sensor supports the RS-485 interface and utilizes the standard Modbus protocol, enabling seamless integration with SCADA, PLCs, and IoT platforms.
Does the sensor feature automatic temperature compensation?
Yes, the sensor features built-in temperature compensation powered by an integrated NTC temperature sensor, which ensures precise real-time readings across varying thermal conditions.
What is the waterproof rating (IP Rating) of this sensor?
The sensor is rated IP68, indicating high-level protection against dust and continuous water submersion, making it suitable for wastewater and aquaculture applications.
Can the default sensor cable be extended?
Yes. The sensor comes standard with a 5-meter cable, which can be extended according to the specific installation requirements of the user.
What other water quality parameters are available in the LMS sensor series?
The LMS digital RS485 series offers a comprehensive range of sensors, including Dissolved Oxygen (DO), pH, ORP, Salinity, Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), Turbidity, CO2, Ammonia Nitrogen, Oil in Water, Chlorophyll, Blue-Green Algae, and Residual Chlorine.