JW-NON-406(K15) online nitrate nitrogen sensor is designed for continuous nitrate ion monitoring in water treatment, aquaculture, environmental water quality, wastewater discharge, and industrial process water applications. It uses a PVC membrane nitrate ion selective electrode with automatic temperature compensation to provide fast, simple, accurate, and cost-effective nitrate nitrogen measurement.
2. Product Overview
JW-NON-406(K15) nitrate nitrogen sensor is an integrated online water quality sensor for measuring nitrate ion concentration in water. It is suitable for applications where nitrate nitrogen levels must be monitored continuously, such as municipal wastewater treatment, aquaculture water quality management, agricultural runoff monitoring, river and lake monitoring, industrial discharge control, and smart environmental monitoring systems.
The sensor uses a PVC membrane nitrate ion selective electrode and includes automatic temperature compensation to support stable readings in changing water conditions. With RS485 Modbus RTU digital communication, the sensor can be connected directly to PLC systems, DCS systems, industrial computers, universal controllers, paperless recorders, touchscreen HMIs, RTUs, IoT gateways, and cloud-based water quality platforms.
Its IP68 waterproof design, 3/4 NPT threaded structure, and replaceable membrane cap make it practical for long-term deployment in field and industrial water monitoring projects.
Item
Specification
Product Type
Online Nitrate Nitrogen Sensor
Measurement Principle
PVC membrane nitrate ion selective electrode
Measurement Range
0 to 100.0 mg/L or 0 to 1000.0 mg/L
Resolution
0.1 mg/L
Accuracy
±10% or ±2 mg/L
Temperature Accuracy
±0.5°C
Response Time
T90 less than 60 seconds
Minimum Detection Limit
0.9 mg/L
Medium pH Range
2.5 to 11 pH
Temperature Compensation
Automatic temperature compensation with Pt1000
Output Signal
RS485 Modbus RTU
Power Supply
12 to 24V DC
Power Consumption
0.2W at 12V
Working Temperature
0 to 40°C
Working Pressure
Less than 0.1 MPa
Storage Temperature
-5 to 40°C
Housing Material
PVC and POM
Protection Grade
IP68
Installation Method
3/4 NPT thread immersion installation
Cable Length
5 m standard cable customizable
Calibration Method
Two-point calibration
3. Application Scenarios
Wastewater treatment plant nitrate monitoring
Aquaculture water quality control
River and lake water monitoring
Agricultural runoff nitrate monitoring
Industrial wastewater discharge monitoring
Drinking water source monitoring
Environmental protection stations
Smart water quality monitoring systems
Online nutrient monitoring systems
Research and laboratory water testing systems
4. Installation Notes
The nitrate nitrogen sensor supports immersion installation and can also be mounted in tanks or pipelines using its 3/4 NPT threaded structure. According to the installation diagram in the manual, the sensor must not be installed upside down or horizontally. It should be installed at an inclination angle of at least 15 degrees to ensure stable measurement performance.
For long-term use in water, seawater, or humid outdoor environments, all wiring joints should be waterproofed, and the user-side cable should have corrosion-resistant protection.
5. Maintenance Guide
Before use, the electrode should be soaked in tap water for 24 hours. The electrode should be cleaned with distilled or deionized water and dried gently without wiping the sensing membrane aggressively. If the PVC membrane becomes translucent or covered with deposits after long-term use, rinse it with distilled or deionized water. If calibration and measurement cannot be restored after maintenance, the electrode should be replaced.
FAQ
Q
1. What is an online nitrate nitrogen sensor used for?
A
It is used to continuously monitor nitrate ion concentration in water, including wastewater, aquaculture water, river water, lake water, agricultural runoff, and industrial discharge.
Q
2. What measurement ranges are available?
A
The sensor supports two range options: 0 to 100.0 mg/L and 0 to 1000.0 mg/L, both with 0.1 mg/L resolution.
Q
3. Can this nitrate sensor connect to a PLC or IoT platform?
A
Yes. The sensor provides RS485 Modbus RTU output and can be integrated with PLCs, DCS systems, RTUs, data loggers, gateways, and IoT platforms.
Q
4. Is this sensor suitable for long-term water monitoring?
A
Yes. It has an IP68 waterproof rating, 3/4 NPT threaded installation, and a durable PVC and POM housing for online water quality monitoring.
Q
5. How does JW-IoT use this nitrate sensor in smart water projects?
A
JW-IoT can integrate the nitrate nitrogen sensor with cloud dashboards, IoT gateways, alarms, and multi-parameter water quality monitoring systems for smart water and environmental projects.
Q
6. Does the sensor include temperature compensation?
A
Yes. The sensor uses Pt1000 automatic temperature compensation to improve measurement stability under changing water temperature conditions.
Q
7. Can JW-IoT provide nitrate monitoring for aquaculture farms?
A
Yes. JW-IoT can combine nitrate nitrogen monitoring with dissolved oxygen, pH, temperature, conductivity, salinity, and ammonia nitrogen sensors for aquaculture water quality systems.
Q
8. What should be noted during installation?
A
The sensor should not be installed upside down or horizontally. It should be installed at an angle of at least 15 degrees for correct operation.
Q
9. Can JW-IoT customize the sensor cable or system integration?
A
Yes. JW-IoT can support customized cable length, RS485 Modbus integration, gateway connection, and cloud platform data display according to project requirements.
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