- 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 ORP Meter Water Quality Sensor Probe from China Suppliers and Factory for Accurate Measurement
Product Parameters
| Product Name | ORP sensor |
| Model | LMS-ORP100 |
| Measurement Method | Ionic Electrode |
| Range | ±1000.0 mV |
| Accuracy | 0.1 mV |
| Power | 9–24 VDC (Recommend 12 VDC) |
| Voltage | 8–24 VDC (55mA / 12V) |
| Material | Polymer Plastic |
| Size | 31mm × 140mm |
| Output | RS-485, MODBUS Protocol |
Product Features
①
High-Accuracy ORP Measurement
Employs an advanced ionic electrode method to deliver precise and stable ORP readings up to ±1000.0 mV with a resolution of 0.1 mV.
②
Robust and Compact Design
Constructed with polymer plastic and a flat bubble structure, the sensor is durable, easy to clean, and resistant to damage.
③
Temperature Compensation Support
Allows both automatic and manual temperature compensation for improved accuracy under varying environmental conditions.
④
Modbus RTU Communication
Integrated RS485 interface supports the Modbus RTU protocol, enabling seamless integration with data loggers and control systems.
⑤
Anti-Interference and Stable Performance
Features an isolated power supply design that ensures data stability and strong anti-interference capability in noisy electrical environments.
Applications
Industrial Wastewater Treatment
In chemical, electroplating, or printing and dyeing industries, the sensor monitors ORP during wastewater oxidation/reduction processes (e.g., removing heavy metals or organic pollutants). It helps operators confirm whether the reaction is complete (e.g., sufficient oxidant dosage) and ensures treated wastewater meets discharge standards, reducing environmental pollution.
Aquaculture Water Quality Management
In fish, shrimp, or shellfish farms (especially recirculating aquaculture systems), ORP reflects the level of organic matter and dissolved oxygen in water. Low ORP often indicates poor water quality and high disease risk. The sensor provides real-time data, allowing farmers to adjust aeration or add microbial agents timely, maintaining a healthy aquatic environment and improving breeding survival rates.
Environmental Water Quality Monitoring
For surface water (rivers, lakes, reservoirs) and groundwater, the sensor measures ORP to assess ecological health and pollution status. For example, abnormal ORP fluctuations may indicate sewage inflow; long-term data tracking can also evaluate the effectiveness of ecological restoration projects (e.g., lake eutrophication control), providing support for environmental protection departments.
Drinking Water Safety Supervision
In water treatment plants, the sensor is used in raw water pretreatment, disinfection (chlorine or ozone disinfection), and finished water storage. It ensures disinfection is thorough (sufficient oxidation to inactivate pathogens) while avoiding excessive disinfectant residues (which affect taste or produce harmful by-products). It also supports real-time monitoring of tap water pipelines, safeguarding end-user drinking water safety.
Laboratory Scientific Research
In environmental science, aquatic ecology, or water chemistry laboratories, the sensor provides high-precision ORP data for experiments. For example, it can analyze the oxidation behavior of pollutants, study the relationship between temperature/pH and ORP, or verify new water treatment technologies—supporting the development of scientific theories and practical applications.
Swimming Pool & Recreational Water Maintenance
In public swimming pools, water parks, or spas, ORP (typically 650–750 mV) is a key indicator of disinfection effectiveness. The sensor monitors ORP continuously, enabling automatic adjustment of chlorine dosage. This reduces manual monitoring efforts and prevents bacterial growth (e.g., Legionella), ensuring a safe and hygienic water environment for users.
Digital RS485 Water Quality Sensors Technical Data
| Digital RS485 Water Quality Sensors Technical Data | ||||||
| No. | Picture | Product Name | Model | Range | Accuracy | Resolution |
| 1 |  |
DO sensor | LMS-DO10B | 0–20 mg/L, 0–60℃ | ±0.1–0.3 mg/L | 0.01 mg/L |
| 2 |  |
DO sensor | LMS-DO10C | 0–20 mg/L, 0–60℃ | ±0.3 mg/L | 0.01 mg/L |
| 3 |  |
Trace DO sensor | LMS-TDO100 | 0–2000 ppb, 0–50℃ | ±1 ppb | 1 ppb |
| 4 |  |
PH sensor | LMS-PH100 | 0–14 pH | ±0.02 pH | 0.01 pH |
| 5 | |
ORP sensor | LMS-ORP100 | ±1000.0 mV | ±0.2 mV | 0.1 mV |
| 6 |  |
EC/TDS sensor | LMS-TDS102 | CT: 0–9999 uS/cm; 0–100 mS/cm; TDS: 0–10000 ppm | ±2.5% FS | 1 uS/cm, 0.01 mS/cm, 1 ppm |
| 7 |  |
Salinity/EC/TDS sensor | LMS-SAL104 | Conductivity: 0.1–500 mS/cm; TDS: 0–60000 ppm; Salinity: 0–500.00 ppt | ±1.5% FS | 1 uS/cm, 0.01 mS/cm, 1 ppm, 0.01 ppt |
| 8 |  |
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; Temp: 0–50℃ | ±5% equiv. KHP; Temp: ±0.5℃ | 0.01 mg/L equiv. KHP |
| 9 |  |
TSS sensor | LMS-TSS100 | 0–50000 mg/L / 0–120000 mg/L | ±10% FS or 10 mg/L | 0.1 mg/L or 1 mg/L |
| 10 |  |
Turbidity sensor | LMS-TUR10L | 0–100 NTU | ±10% FS or 0.3 NTU | 0.01 NTU |
| 11 | |
Turbidity sensor | LMS-TUR10H | 0–3000 NTU | ±10% FS or 0.3 NTU | 0.01 NTU |
| 12 |  |
CO2 sensor | LMS-CO2100 | 2000 PPM / 10000 PPM / 50000 PPM | ±5% FS | 1 ppm |
| 13 |  |
Ammonia Nitrogen sensor | LMS-NH4100 | 0–1000 mg/L | ±5% FS | — |
| 14 | |
Ion Selective sensor | LMS-ION100 | 0–1000 mg/L | ±5% FS | — |
| 15 | |
Oil in Water sensor | LMS-OIL100 | 0–50 mg/L; 0–5 mg/L | ±3% FS | 0.01 ppm |
| 16 | |
Chlorophyll sensor | LMS-CHL100 | 0–500 ug/L | ±3% FS | 0.1 ug/L |
| 17 | |
Blue-Green Algae sensor | LMS-BGA100 | 0–2,000,000 cells/ml | ±3% FS | — |
| 18 |  |
Residual Chlorine sensor | LMS-HCLO100 | 0–20.00 ppm | ±5% FS | 0.001 / 0.01 ppm |
| 19 |  |
Marine Current sensor | LMS-Current100 | Temp: -3℃–45℃; Flow: 0–500 cm/s; Direction: 0–359.9° | ±0.05℃; ±1 cm/s or ±2%; ±2° | Temp: 0.001℃; Flow: 0.1 cm/s; Dir: 0.1° |
| Water Quality Analyzer Equipment | ||||||
| No. | Picture | Product Name | Model | Size | Power | Display Output |
| 20 |  |
Portable DO Analyzer | LMS-PA100 | 100mm × 204mm | <0.5 W; 7.5V, 5 batteries | LCD display screen |
| 21 |  |
Multi-parameter Portable Water Analyzer | LMS-PA100P | 220mm × 120mm × 100mm | Rechargeable lithium battery with 220V DC charging adapter | LCD display screen |
| 22 |  |
Multi-parameter Touch-screen Online Analyzer | LMS-OA200T | 180mm × 230mm × 100mm | AC power supply: 220 VAC | 7-inch touch screen |
Frequently Asked Questions (FAQ)
Q
What is ORP and why is it important to monitor in water?
ORP (Oxidation-Reduction Potential) measures the ability of water to act as an oxidizing or reducing agent, expressed in millivolts (mV). It is a key indicator of water quality and disinfection effectiveness. Positive ORP values indicate oxidizing conditions (beneficial for disinfection), while negative values indicate reducing conditions. Monitoring ORP helps ensure safe drinking water, healthy aquaculture environments, and compliant industrial wastewater discharge.
Q
What is the measurement range and accuracy of the LMS-ORP100 sensor?
The LMS-ORP100 ORP sensor offers a measurement range of ±1000.0 mV with a resolution of 0.1 mV and an accuracy of ±0.2 mV. This makes it suitable for a wide variety of water quality monitoring applications, from industrial wastewater to swimming pools and drinking water treatment.
Q
What communication protocol does the LMS-ORP100 support, and how does it integrate with existing systems?
The LMS-ORP100 uses an RS-485 interface with the Modbus RTU protocol. This is a widely adopted industrial standard, allowing the sensor to integrate seamlessly with PLCs, data loggers, SCADA systems, and other control equipment. The isolated power supply design further ensures stable communication even in electrically noisy environments.
Q
Does the ORP sensor support temperature compensation?
Yes. The LMS-ORP100 supports both automatic and manual temperature compensation. Since ORP readings can be influenced by temperature changes, this feature ensures more accurate and reliable measurements across varying environmental conditions, which is especially important in outdoor monitoring or industrial applications with fluctuating temperatures.
Q
What power supply does the LMS-ORP100 ORP sensor require?
The sensor operates on a supply voltage of 8–24 VDC (with a current draw of approximately 55 mA at 12V). The recommended operating voltage is 12 VDC. Its wide input voltage range makes it compatible with most standard industrial power supplies and field deployment setups.
Q
Can the LMS-ORP100 be used alongside other water quality sensors in a multi-parameter monitoring system?
Absolutely. The LMS-ORP100 is part of a comprehensive range of Digital RS485 water quality sensors that includes DO, pH, EC/TDS, turbidity, COD, ammonia nitrogen, residual chlorine, and many more. All sensors share the same RS-485 Modbus RTU communication standard, making it straightforward to build a multi-parameter water quality monitoring system using a single data bus and controller.