- 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
01
Digital Residual Chlorine Sensor for Water Quality Monitoring
Product Paramenters
| Product Name | Residual Chlorine Sensor |
| Model | LMS-HCLO100 |
| Range | Residual chlorine meter: 0 - 20.00 ppm Temperature: 0- 50.0℃ |
| Accuracy | Residual chlorine meter: ± 5.0% F.S, supporting pH compensation function Temperature: ±0.5 ℃ |
| Power | 6VDC-30VDC |
| Material | Polymer Plastic |
| Warranty period | Electrode head 12 months/digital board 12 months |
| Sensor Interface Supports | RS-485, MODBUS protocol |
| Cable length | 5m, can be extended according to user need |
| Application | Tap water treatment, swimming pool water quality monitoring, and industrial wastewater treatment. |
Product Features
① Three-Electrode Constant Potential Technology
Ensures stable measurements by minimizing polarization effects and interference from pH fluctuations, even in dynamic water conditions.
② Multi-Range Resolution & pH Compensation
Supports resolutions from 0.001 ppm to 0.1 ppm and automatic pH compensation to enhance accuracy in varying water chemistries.
③ Modbus RTU Integration
Pre-configured with default address (0x01) and baud rate (9600 N81), enabling plug-and-play connectivity to industrial automation systems.
④ Robust Design for Harsh Environments
IP68-rated housing and corrosion-resistant electrodes withstand prolonged submersion, high-pressure flows, and temperatures up to 60℃.
⑤ Low Maintenance & Self-Diagnostics
Features automatic zero/slope calibration commands, error code feedback, and optional protective covers to reduce biofouling and manual upkeep.
Application
1. Drinking Water Treatment
Monitor residual chlorine levels in real time to ensure disinfection efficacy and regulatory compliance.
2. Industrial Wastewater Management
Track chlorine concentrations in effluents to meet environmental discharge standards and avoid penalties.
3. Aquaculture Systems
Prevent over-chlorination in fish farms to protect aquatic life and optimize water quality.
4. Swimming Pool & Spa Safety
Maintain safe chlorine levels for public health while avoiding corrosive over-dosing.
5. Smart City Water Networks
Integrate into IoT-based water quality monitoring systems for urban infrastructure management.

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° |























