- 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-Accuracy NH4+ Sensor for Water Quality Monitoring - Reliable China Suppliers and Factory Solutions
Product Parameters
| Product Name | Ammonia Nitrogen (NH4+) Sensor |
| Measurement Method | Ionic electrode |
| Range | 0 ~ 1000 mg/L |
| Accuracy | ±5% F.S. |
| Power | 9–24 VDC (Recommend 12 VDC) |
| Material | Polymer Plastic |
| Size | 31mm × 200mm |
| Working Temperature | 0–50 ℃ |
| Cable Length | 5m, can be extended according to user need |
| Sensor Interface Supports | RS-485, MODBUS protocol |
Product Features
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① Eco-Friendly & Robust Design
Constructed from durable polymer plastic, the sensor resists chemical corrosion and physical wear, ensuring longevity in demanding environments such as wastewater plants or outdoor water bodies.
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② Custom Calibration Flexibility
Supports standard liquid calibration with adjustable forward and reverse curves, enabling tailored accuracy for specific applications.
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③ High Stability & Anti-Interference
Isolated power supply design minimizes electrical noise and ensures reliable data transmission in industrial or electromagnetically complex settings.
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④ Multi-Scenario Compatibility
Designed for direct installation into monitoring systems, it performs reliably in surface water, sewage, potable water, and industrial effluents.
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⑤ Low Maintenance & Easy Integration
Compact dimensions and a pollution-resistant structure simplify deployment and reduce cleaning frequency, lowering operational costs.
Application
1
Municipal Wastewater Treatment
Monitor NH4+ levels to optimize treatment processes and comply with environmental discharge regulations.
2
Environmental Pollution Control
Track ammonia nitrogen concentrations in rivers, lakes, and reservoirs to identify contamination sources and protect ecosystems.
3
Industrial Effluent Monitoring
Ensure compliance with industrial wastewater standards by detecting NH4+ in real-time during chemical or manufacturing processes.
4
Drinking Water Safety
Safeguard public health by identifying harmful ammonia nitrogen levels in potable water sources.
5
Aquaculture Management
Maintain optimal water quality for aquatic species by balancing NH4+ concentrations in fish farms or hatcheries.
6
Agricultural Runoff Analysis
Assess nutrient runoff impacts on water bodies to improve sustainable farming practices.
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 uS/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 ug/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 of flow: 0–500 cm/s Flow direction: 0–359.9° |
±0.05 ℃ ±1 cm/s or ±2% ±2° |
Frequently Asked Questions
Q
What is the measurement principle of the Ammonia Nitrogen (NH4+) Sensor?
The sensor uses an ionic electrode method to measure ammonium ion (NH4+) concentrations directly in water. This electrochemical approach provides stable and accurate readings without the need for reagents, making it suitable for continuous online monitoring.
Q
What is the measurement range and accuracy of the LMS-NH4100 sensor?
The LMS-NH4100 Ammonia Nitrogen Sensor covers a measurement range of 0–1000 mg/L with an accuracy of ±5% F.S. (Full Scale), making it suitable for both low-concentration environmental monitoring and high-concentration industrial wastewater applications.
Q
What communication protocol does the sensor support?
The sensor supports RS-485 interface with MODBUS protocol, which is widely used in industrial automation and water quality monitoring systems. This allows easy integration with PLCs, data loggers, and SCADA systems over long cable runs.
Q
How long is the cable, and can it be extended?
The standard cable length is 5 meters. However, it can be extended according to user requirements, making it flexible for installations in deep tanks, remote monitoring stations, or large-scale water treatment facilities.
Q
In what types of water environments can this sensor be used?
The sensor is designed for multi-scenario use, including municipal wastewater treatment, industrial effluent monitoring, drinking water safety checks, aquaculture management, river and lake environmental monitoring, and agricultural runoff analysis.
Q
How often does the sensor need to be calibrated or maintained?
The sensor supports standard liquid calibration with adjustable forward and reverse curves. Thanks to its pollution-resistant polymer plastic construction, maintenance frequency is significantly reduced compared to traditional sensors. Routine inspection and periodic calibration are recommended based on the water quality of the deployment environment.