Water Quality Sensors
RYD03-NH
Digital Ammonia Nitrogen Sensor
Product Overview
The RYD03-NH is a digital ammonia nitrogen sensor using ion-selective electrode technology—no reagents, no secondary pollution, low maintenance and cost. Built-in PT1000 with compensation achieves ±0.1 °C. The replaceable membrane cap lasts over one year in typical waters. RS485 standard Modbus for easy integration.
Key Features
◆
Ion-selective electrode, reagent-free
◆
Replaceable membrane cap, long life
◆
PT1000 compensation, ±0.1 °C
◆
Auxiliary pH output
◆
Response time <30 s
Technical Specifications
| Principle | Ion-selective electrode |
|---|---|
| Range | 0–1000 mg/L |
| Resolution | 0.01 mg/L |
| Accuracy | ≤10% of reading or 0.1 mg/L (whichever greater) |
| Response time | <30 s |
| Interface | RS485, standard Modbus |
| Temp. sensor | PT1000, ±0.1 °C |
| Dimensions | D34 mm, L205 mm, 10 m cable (customizable) |
| Environment | 0–50 °C (no icing), 0–1 bar |
| Supply | 12–24 V DC |
| Protection | IP68 |
Typical Applications
WWTP ammonia monitoring
Outfall online monitoring
Surface & black-odorous water
Aquaculture water monitoring
Need selection help or a quotation?
Our engineers provide free selection advice and solution design for your measurement scenario.
Contact UsRelated Products
RYD03-PH
Digital pH Sensor
- <li>Glass electrode, full 0–14 pH range</li> <li>Double-junction design resists back-diffusion</li> <li>Built-in PT1000, ±0.1 °C compensation</li>
RYD03-EC
Digital Conductivity Sensor
- <li>Four-electrode method, 0–200,000 μS/cm</li> <li>Automatic 10× range switching</li> <li>Salinity & TDS extended outputs</li>
RYD03-COD
Digital COD Sensor
- <li>UV254 absorption, reagent-free</li> <li>Dual-beam: simultaneous COD + turbidity</li> <li>Self-cleaning wiper, maintenance-free</li>