SMR23 Series
Ammonium Analyzer
The Ammonium Nitrogen Analyzer utilizes highly reliable ion-selective electrode (ISE) technology to provide accurate and continuous online ammonium nitrogen (NH₄-N) monitoring in water quality applications. The analyzer enables real-time detection of ammonium concentration changes, helping operators maintain stable water quality and process control.
To ensure high measurement accuracy and long-term reliability, the system features interference compensation technology to reduce the impact of other substances in water. An integrated automatic self-cleaning function minimizes sensor fouling, extends sensor service life, and reduces maintenance requirements and operating costs.
Designed for continuous online monitoring, the analyzer delivers stable and reliable performance in demanding environments. It is widely used in wastewater treatment plants, drinking water systems, environmental monitoring, aquaculture, and mixed liquor suspended solids (MLSS) applications.
With accurate measurement capability, low maintenance requirements, and reliable online monitoring performance, the NH₄-N Ammonium Nitrogen Analyzer provides an efficient solution for modern water quality monitoring and process management.
To ensure high measurement accuracy and long-term reliability, the system features interference compensation technology to reduce the impact of other substances in water. An integrated automatic self-cleaning function minimizes sensor fouling, extends sensor service life, and reduces maintenance requirements and operating costs.
Designed for continuous online monitoring, the analyzer delivers stable and reliable performance in demanding environments. It is widely used in wastewater treatment plants, drinking water systems, environmental monitoring, aquaculture, and mixed liquor suspended solids (MLSS) applications.
With accurate measurement capability, low maintenance requirements, and reliable online monitoring performance, the NH₄-N Ammonium Nitrogen Analyzer provides an efficient solution for modern water quality monitoring and process management.
Features
SMR23 Ammonium Analyzer
- All-in-One Compact Housing, Built-in Transmitter and Sensors
- Robust IP68 Water Submersible Protection, Directly Installed in the Field, No Cabinet Required
- Ultra Low Power Consumption, Ideal for Outdoor Applications
- 1000 N Tensile Strength Kevlar Reinforced Cable
- Built-in Temperature, Humidity Monitoring and LED Failure Self Diagnosis Function
- Advanced Intelligent Algorithm and Signal Processing Technology to Eliminate Noise
- pH, Temperature and Potassium Compensation
- Surge Protection for Power and RS485 Communication
- RS485 Digital Communication, Minimize Cabling and Engineering Cost
- Standard Modbus RTU Protocol, Direct Connected with PLC, HMI
- Very Stable Electrodes, without the Need of Frequent Calibration
- Metal Membrane of Electrode to Prevent Scratch
- Electrode is over 12 Months Long Period of Life
- Anti-Fouling Auto Cleaning wiper, Minimal Maintenance
- Onboard Memory to Easily Calibrate and Configure Sensor at Lab and Distribute to Various Fields
- Software Tool for Data Monitoring, Calibration, Configuration and Diagnosis
- IECEx/ATEX Ex ia IIB T4/T5 Ga Explosive Proof Certification
- Choose high-quality pumps, valves, tubes and other key parts with high reliability and long product life
- Less reagent consumption, less waste liquid discharge for environmental protection and low operating cost
- Highly reliable metering technology which can accurately measure sewage and wastewater under extreme conditions
- Embedded software and hardware technology provides stable and reliable, flexible configuration functions
- Industry-leading signal processing system with high precision and good repeatability
- Modular design, high reliability and easy maintenance
- Compact size, convenient and flexible for transportation and installation
Applications
Drinking water, water treatment, wastewater, fishery
Models
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Technical Comparison
SMR23 Ammonia Nitrogen Analyzer: Ion-Selective Electrode and Colorimetric Monitoring Solution Comparison
| Comparison Item | SMR23-2 Ammonia Nitrogen and pH Analyzer | SMR23-W Ammonia Nitrogen Analyzer | Traditional Manual Sampling / Laboratory Analysis | General Handheld Ammonia Nitrogen Testing | General Single-Parameter Sensor / RTU Integration |
|---|---|---|---|---|---|
| Measurement Principle | Ion-selective electrode method, converting potential difference into concentration according to the Nernst equation | Salicylate reacts with hypochlorite ions to form a blue compound, and the concentration is calculated by photoelectric colorimetry | Chemical analysis or standard laboratory methods | Test strips, colorimetric methods, or simple electrode methods | Depends on the sensor type |
| Measurement Parameters | NH4-N / NH4+, pH, temperature, and potassium ion compensation | NH4-N / NH4+, supporting alarms, logging, and 4–20 mA output | Usually provides only single sampling results | Usually provides single on-site readings | Usually depends on the external sensor |
| Response / Measurement Time | Approximately 2 minutes | Approximately 10–60 minutes, depending on different application water quality conditions | Usually requires sampling, sample submission, and waiting for test results | Immediate or within several minutes | Depends on the sensor and system settings |
| Installation Method | Immersion, flow-through, and pipe-insertion installation | Flow-through installation | Manual sampling, not continuous online monitoring | Manual on-site testing | Requires separate installation of sensors, wiring, control cabinet, and programming |
| Maintenance Requirements | Electrode lifetime can exceed 12 months; automatic cleaning brush reduces maintenance | Requires management of reagents, pure water, waste liquid, and tubing cleaning; modular design facilitates maintenance | Requires regular personnel sampling and laboratory operation | Requires manual operation and consumable replenishment | Depends on system integration and on-site environment |
| Communication and Integration | RS485 Modbus RTU; optional 4–20 mA output | RS485 Modbus RTU with 4–20 mA analog output | Requires manual input or separate data compilation | Usually does not provide complete remote integration | Requires RTU / PLC integration and programming configuration |
| Outdoor Protection | IP68 rugged submersible anti-corrosion enclosure for direct on-site installation | Stainless steel and acrylic enclosure for flow-through fixed station applications | Not applicable | Mostly portable equipment | Depends on the enclosure and sensor rating |
| Suitable Applications | Drinking water, water treatment, wastewater, and aquaculture | Surface water and wastewater treatment | Regulatory testing, verification analysis, and periodic testing | Temporary inspection and quick judgment | Fixed monitoring stations or control systems |
| Main Advantages | Reagent-free, low power consumption, and suitable for long-term online monitoring in outdoor or distributed sites | Colorimetric measurement, suitable for fixed stations and more complete automated analysis workflows | Complete analytical methods and suitable for formal reports | Convenient and fast, but not suitable for long-term automatic monitoring | Customizable, but with higher installation and maintenance costs |
| Recommended Product Page Description | Suitable for ammonia nitrogen applications requiring low power consumption, reagent-free operation, and long-term continuous monitoring | Suitable for ammonia nitrogen monitoring stations requiring flow-through measurement, automatic sampling, reaction measurement, logging, and alarm functions | Can be used for comparison and laboratory confirmation | Can be used as an on-site auxiliary tool | Can be used as a large-scale system integration solution |
If low power consumption, low maintenance, and reagent-free operation are priorities on site, the SMR23-2 is recommended. If flow-through reagent colorimetry, automatic sampling, and a more complete fixed-station analysis workflow are required, the SMR23-W can be selected. Both models can be integrated with controllers, data loggers, or host systems via RS485 Modbus RTU.
