- 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
High-Precision Digital Residual Chlorine Sensor for Water Quality - China Suppliers and Factory Solutions
Product Parameters
| 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: 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)
Q
What is the measurement range of the LMS-HCLO100 Residual Chlorine Sensor?
A
The LMS-HCLO100 measures residual chlorine from 0 to 20.00 ppm and temperature from 0 to 50.0℃, making it suitable for a wide range of water quality monitoring applications.
Q
What communication protocol does the Residual Chlorine Sensor support?
A
The sensor supports RS-485 interface with Modbus RTU protocol, pre-configured with default address 0x01 and baud rate 9600 N81, allowing easy integration into industrial automation and IoT systems.
Q
Is the LMS-HCLO100 suitable for outdoor or submerged installation?
A
Yes. The sensor features an IP68-rated housing with corrosion-resistant electrodes, enabling prolonged submersion and operation in high-pressure flow environments and temperatures up to 60℃.
Q
Does the sensor support pH compensation for accurate readings?
A
Yes. The LMS-HCLO100 includes an automatic pH compensation function and supports multiple resolution levels from 0.001 ppm to 0.1 ppm, ensuring accurate readings across varying water chemistries.
Q
How long is the cable and can it be extended?
A
The standard cable length is 5 meters. It can be extended according to user requirements to accommodate various installation distances and site conditions.
Q
What maintenance is required for the LMS-HCLO100 sensor?
A
The sensor is designed for low maintenance with automatic zero/slope calibration commands and built-in error code feedback. Optional protective covers are available to reduce biofouling and minimize manual upkeep over time.

















