Brand：Erun
Online Ammonium Ion Water Quality Sensor
Model：ERUN-M4A
This product is a new type of online water quality ammonium ion sensor independently developed by ERUN Group. It features high stability and high precision. It can automatically detect temperature and perform automatic temperature compensation, enabling accurate measurement of ammonium ion concentration and temperature in solutions.
It is widely used for continuous real-time monitoring of ammonium ions in wastewater, boiler water, aquaculture, as well as biological and pharmaceutical industries.
| Measuring Range | 0.1-18000ppm |
| Accuracy | ±5%FS |
| Resolution | 0.001ppm |
| pH Range | 4~10pH |
| Temperature Measuring Range | 0.0~50.0℃ |
| Sensor Type | PVC Membrane |
| Repeatability | ±4% |
| Pressure Range | 0-1bar |
| Housing Material | PPS |
| Data Communication | RS485（MODBUS-RTU） |
| Process Connection | G3/4 |
| Signal Cable Length | Standard 5-meter signal cable |
| Output | 4-20mA |
| Installation method | Immersion Type |
| IP Rating | IP68 |
High Accuracy & Stability
Easy-to-replace sensor modules and antifouling coatings reduce maintenance needs and operational costs.
Smart Connectivity & Integration
Supports 4-20 mA, RS485, and Modbus protocols for seamless integration with existing SCADA or PLC systems.
Optional wireless connectivity (LoRa, NB-IoT) enables remote data access and cloud-based monitoring.
Intuitive interface with clear calibration prompts and self-diagnostic functions.
Configurable alarm thresholds for instant notifications of abnormal ammonium levels.
