NHN-302 Ammonia Nitrogen Sensor
NHN-302 multi parameters online ammonia nitrogen sensor is fabricated using a PVC membrane-based ammonium ion selective electrode for testing ammonium ion content in water with temperature, ph and potassium ion compensation to ensure fast, simple, accurate and economical testing. The technical parameters, maintenance and communication protocols of the ammonia nitrogen sensor are described in detail in this user manual.
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Product Parameters
| Model | NHN-302 |
| Measuring range |
NH4+：0～1000mg/L or 0～100mg/L NH3：0～150mg/L or 0～15mg/L K+：0～1000mg/L pH: 0～14pH Temperature：0～35℃ |
| Resolution | NH4+：0.1mg/L |
| Accuracy |
NH4+：±5%F.S. NH3 or total ammonia nitrogen ：±5%F.S. K+：±5%F.S. pH：0.1pH Temperature：0.5℃ |
| Working temperature | 0～35℃ |
| Working pressure | ＜0.1MPa |
| Temperature compensation |
Auto temperature compensation (Pt1000) pH compensate range：4～10pH K+compensate range：0～1000mg/L |
| Power supply | 12～24VDC |
| Signal output | RS-485 bus, Modbus/RTU protocol |
| Wetted material | PVC and POM |
| Installation | 3/4NPT thread, immersion installation |
| Cable length | 5 meters, other lengths can be customized |
| Calibration | Two-point calibration |
| Measuring method | Ion selection method |
| Protection grade | IP68 |
