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Nitrate Online Analyzer and Ammonia Nitrogen Online Analyzer: Reliable Technical Solutions for Industrial Water Quality Online Monitoring
In industrial water treatment and environmental monitoring projects, real-time and accurate data for nitrate nitrogen and ammonia nitrogen are the core basis for process optimization, discharge compliance, and stable system operation. Nexisense nitrate online analyzers and ammonia nitrogen online analyzers are based on multi-parameter ion-selective electrode technology, catering to the actual needs of system integrators, engineering companies, and project managers by providing complete solutions characterized by plug-and-play functionality, standard communication protocols, and low maintenance costs. Both support in-situ installation without the need for reagents or complex pretreatment, significantly reducing on-site operation and maintenance pressure while achieving seamless connection with PLC, RTU, or central control systems through rich interfaces.
Detailed Product Information of Nitrate Online Analyzer
The Nexisense nitrate online analyzer adopts a combined measurement mode of nitrate, chloride ions, pH, temperature, and a reference electrode. The matrix calibration algorithm effectively eliminates cross-interference from other ions in the water sample and automatically corrects the influence of temperature on the measured value. Simultaneous multi-parameter acquisition ensures data consistency, making it suitable for surface water monitoring, water treatment process control, and industrial process nitrate online detection.
Product features include plug-and-play sensors, integrated electrode multi-parameter matrix correction, in-situ measurement without reagents and pretreatment, response time ≤120 seconds, replaceable ion-selective electrodes, built-in fault self-diagnosis, factory pre-calibration with support for restoration at any time, 4-inch graphic screen with LED backlight, 5 physical button operations, 3-way relay control for peripheral equipment, 2-way isolated 4-20mA output, 1-way isolated RS485 interface (standard Modbus protocol), IP66 protection rating, and optoelectronic isolated output interfaces.
Product Specifications of Nitrate Online Analyzer
| Parameter | Specification |
|---|---|
| Measurement Factors | Nitrate Nitrogen, pH, Temperature |
| Range | Nitrate: 0-1000mg/L; Chloride Ion: 0-1000mg/L; pH: 0-14 |
| Repeatability | ±3% |
| Accuracy | ±5% measured value |
| Response Time | ≤120s |
| Display | 4-inch LED backlight, 240×128 graphic screen |
| Keyboard | Menu, Confirm, Move, Up, Down (five physical buttons) |
| Calibration Mode | Single-point or Two-point calibration |
| Housing | ABS+316L+PP |
| Protection Rating | IP66 (Controller); IP68 (Sensor) |
| Working Temperature | 0°C-60°C |
| Power Supply | 90~240VAC |
| Relays | 3-way (SPST), 220V/1A, supports high alarm, low alarm, timer modes |
| 4-20mA Output | 2-way isolated, 500 ohms, associated with measured values |
| Communication | 1-way isolated RS485, standard Modbus-RTU |
Detailed Product Information of Ammonia Nitrogen Online Analyzer
The Nexisense ammonia nitrogen online analyzer complies with the EPA 351.3 US environmental standard and completes measurements based on a combination of ammonium ions, potassium ions, pH, temperature, and a reference electrode. The matrix calibration algorithm likewise eliminates cross-interference from other ions in the water sample and automatically corrects for pH and temperature influences. The product supports in-situ installation and responds quickly, making it suitable for online detection in industrial processes, municipal water treatment, industrial water treatment, and aquaculture scenarios.
Product features include plug-and-play sensors, integrated electrode multi-parameter matrix correction, in-situ measurement without reagents and pretreatment, response time less than 60 seconds (specification ≤120 seconds), replaceable sensor membrane heads, built-in fault self-diagnosis, factory pre-calibration with support for restoration, 4-inch graphic screen with LED backlight, 5 physical button operations, 3-way relay control for peripheral equipment, 2-way isolated 4-20mA output, 1-way isolated RS485 interface (standard Modbus protocol), IP66 protection rating, and optoelectronic isolated output interfaces.
Product Specifications of Ammonia Nitrogen Online Analyzer
| Parameter | Specification |
|---|---|
| Measurement Factors | Ammonia Nitrogen, pH, Temperature (including K+) |
| Range | Ammonia Nitrogen: 0-100mg/L, 0-1000mg/L; K+: 0-1000mg/L; pH: 0-14; Temperature: 0-60°C |
| Repeatability | ±2% |
| Accuracy | ±5% measured value |
| Zero Drift | 1mg/L |
| Range Drift | ±5% |
| Response Time | ≤120s |
| Display | 4-inch LED backlight, 240×128 graphic screen |
| Keyboard | Menu, Confirm, Move, Up, Down (five physical buttons) |
| Calibration Mode | Single-point or Two-point calibration |
| Housing | ABS+316L+PP |
| Protection Rating | IP66 (Controller); IP68 (Sensor) |
| Working Temperature | 0°C-60°C |
| Power Supply | 90~240VAC |
| Relays | 3-way (SPST), 220V/1A, supports high alarm, low alarm, timer modes |
| 4-20mA Output | 2-way isolated, 500 ohms, associated with measured values |
| Communication | 1-way isolated RS485, standard Modbus-RTU |
Core Technical Advantages
Both analyzers utilize an integrated electrode design, where multiple parameters achieve mutual correction through matrix calibration, enhancing measurement accuracy. The sensors support plug-and-play, allowing for field replacement without complex debugging; the in-situ measurement mode completely eliminates reagent consumption and pretreatment steps, significantly reducing maintenance costs and site construction difficulty. The built-in fault self-diagnosis function can monitor the equipment status in real-time, and the factory pre-calibration coefficients allow for the rapid restoration of initial parameters.
The controller provides standardized communication interfaces, with the RS485 Modbus-RTU protocol ensuring efficient docking with existing automation systems. The 2-way isolated 4-20mA outputs and 3-way relays can directly drive fans, pressure pumps, or cleaning equipment, achieving closed-loop linkage control. The optoelectronic isolation design further enhances anti-interference capability, meeting the requirements of complex electromagnetic environments at industrial sites.
Typical Application Scenarios
In surface water monitoring and municipal sewage treatment projects, nitrate online analyzers can reflect the effectiveness of denitrification processes in real-time, providing data support for process adjustment. In industrial process water treatment and aquaculture, ammonia nitrogen online analyzers help control ammonia nitrogen concentration, avoiding equipment corrosion or biological toxicity risks. Both products support a working temperature of 0-60°C and IP68/IP66 protection, adapting to outdoor or high-humidity installation environments, and assisting engineering companies in quickly completing the deployment of water quality monitoring systems.
Frequently Asked Questions
Q1. How does the nitrate online analyzer ensure measurement accuracy in water samples with high chloride ions?
The matrix calibration algorithm simultaneously collects chloride ion, pH, and temperature data to perform real-time correction of the nitrate measurement value, effectively eliminating cross-interference and maintaining accuracy within ±5% measured value, suitable for complex industrial wastewater or surface water scenarios.
Q2. Is it convenient to integrate the ammonia nitrogen online analyzer with existing SCADA or PLC systems?
The controller provides 1-way isolated RS485 interface using the standard Modbus-RTU protocol, supporting direct communication with PLCs, RTUs, or central control systems; 2-way 4-20mA outputs and 3-way relays can flexibly achieve data acquisition and equipment linkage without the need for additional protocol conversion modules.
Q3. How are maintenance costs controlled after long-term use of the sensors?
The nitrate ion-selective electrode and ammonia nitrogen sensor membrane head both support field replacement. Built-in factory calibration coefficients can restore parameters at any time, and the fault self-diagnosis function reduces invalid inspections. Overall maintenance workload is far lower than traditional reagent-type analyzers.
Q4. What is the practical significance of response time for dynamic process control?
The nitrate response time is ≤120 seconds, and the ammonia nitrogen response time is less than 60 seconds (specification ≤120 seconds), which can track concentration changes in real-time, meeting the needs of sewage treatment denitrification processes or rapid water quality adjustment in aquaculture, avoiding process fluctuations caused by lag.
Q5. Is the equipment reliable in outdoor or high-salinity environments?
The sensor uses a corrosion-resistant stainless steel housing and achieves an IP68 protection rating, while the controller has IP66 protection. With a working temperature of 0-60°C, and matrix calibration that automatically compensates for temperature and pH effects, it is suitable for long-term stable operation in coastal industrial parks or surface water monitoring points.
Q6. How do the relay outputs achieve automated linkage control?
The 3-way SPST relays (220V/1A) support multiple modes such as high alarm, low alarm, and timer, which can directly control fans, pressure pumps, or cleaning equipment. Combined with 4-20mA outputs, they form a complete closed-loop control strategy, reducing the frequency of manual intervention.
Summary
Nexisense nitrate online analyzers and ammonia nitrogen online analyzers, with their standardized interfaces, matrix calibration technology, and low-maintenance design, provide an efficient and reliable hardware foundation for system integrators, engineering companies, and project managers. In actual deployment within industrial water treatment, municipal sewage treatment, and aquaculture sectors, both can effectively reduce the total cost of ownership and enhance system responsiveness. For technical parameter confirmation, integration solution discussion, or prototype testing, please contact the Nexisense engineering team to jointly promote the implementation of water quality monitoring projects.
