JW-TN-300C(K38)Online Total Nitrogen Analyzer is an automatic water quality monitoring instrument designed for continuous total nitrogen measurement in surface water and industrial wastewater. It combines alkaline persulfate digestion with photometric analysis to deliver stable, low-drift, and high-precision results for long-term online monitoring applications. With automatic calibration, self-cleaning, alarm functions, remote status monitoring, and multi-interface signal outputs, it is suitable for environmental stations, wastewater treatment plants, and industrial water supervision projects.
2. Product Overview
JW-TN-300C(K38)online total nitrogen analyzer is developed for reliable unattended monitoring of total nitrogen concentration in water. It is suitable for long-term, stable, and effective automatic analysis of surface water and industrial wastewater.
The analyzer applies alkaline persulfate digestion to convert nitrogen compounds in the sample into measurable nitrate nitrogen. Based on the supplied product description, the instrument then performs photometric determination after color development, enabling direct total nitrogen concentration calculation. The system is designed to reduce interference from color, suspended solids, and bubbles, helping maintain accurate performance in complex water samples.
A 7-inch color touchscreen, automatic cleaning, automatic calibration, fault logs, data storage for more than three years, and multiple signal outputs make the analyzer suitable for modern water quality monitoring networks and digital environmental management systems.
Parameter
Specification
Product Type
Online Total Nitrogen Analyzer
Measurement Method
Alkaline Persulfate Digestion Photometric Method
Measuring Range
0–5 mg/L 0–20 mg/L 0–50 mg/L
Custom Range
Available
Detection Limit
0.01 mg/L
Indication Error
≤ ±5%
Zero Drift
±5%
Range Drift
±5% F.S.
Repeatability
≤ 3%
Sample Consumption
5.4 mL per measurement
Waste Liquid Volume
7 mL per measurement
Memory Effect
≤ ±1%
Consistency
≤ 3%
Actual Sample Comparison
≤ 3.0%
Recommended Color Development Temperature
130°C
Constant Temperature Time
900 s
Measurement Cycle
41 min
Sampling Cycle
1–24 h
Calibration Cycle
User-defined
Maintenance Interval
≥ 720 h per maintenance
Monthly Maintenance Workload
< 2 h
Signal Output
RS485 RS232 USB 2 × 4–20 mA
Digital and Switch Interfaces
Standard dual switch input and output
Display
7-inch color LCD touchscreen
Data Storage
More than 3 years
Data Export
USB flash drive
Operating Environment
Indoor temperature-controlled area
Recommended Temperature
5–28°C
Humidity
≤ 90% non-condensing
Power Supply
220 V AC ±22 V 50 ±0.5 Hz
Rated Current
5 A
Power
150 W
Instrument Size
530 × 380 × 235 mm
Instrument Weight
Approx. 12 kg
3. Application Scenarios
Surface water total nitrogen monitoring
River and lake water quality stations
Environmental protection monitoring networks
Industrial wastewater discharge supervision
Municipal wastewater treatment plants
Water pollution source monitoring
Smart water quality management platforms
Regulatory compliance and long-term trend analysis
4. Installation Recommendations
For reliable analyzer performance, the installation site should meet the following conditions:
Place the analyzer in a dry and well-ventilated indoor area
Keep the ambient temperature within 5–28°C
Avoid direct sunlight
Avoid corrosive or irritating gases
Install as close as possible to the sample source to reduce analysis delay
Ensure power and pipelines are stable and free from vibration
Use proper pretreatment and sampling pipeline installation to maintain smooth water intake
Waste liquid should be collected and treated professionally rather than discharged directly into drains
5. Communication and Control
The analyzer supports diverse data and control interfaces for integration with water quality platforms and industrial automation systems:
RS485
RS232
USB
2 channels 4–20 mA analog output
2 channels switch input and output
It also supports operation modes such as:
Hourly measurement
Interval measurement
External control measurement
Device commissioning mode
FAQ
Q
1. What is an online total nitrogen analyzer used for?
A
An online total nitrogen analyzer is used for automatic and continuous measurement of total nitrogen concentration in water, including surface water and industrial wastewater.
Q
2. What is the detection limit of this total nitrogen analyzer?
A
The analyzer provides a low detection limit of 0.01 mg/L, making it suitable for sensitive online water quality monitoring applications.
Q
3. Which measurement ranges are available?
A
Standard measuring ranges include 0–5 mg/L, 0–20 mg/L, and 0–50 mg/L. Customized ranges are also available for project-specific requirements.
Q
4. Can JW-IoT integrate this analyzer with a remote monitoring platform?
A
Yes. The JW-IoT total nitrogen analyzer supports automatic calibration, which helps maintain measurement stability during long-term unattended operation.
Q
5. Can this analyzer reduce interference from suspended solids and bubbles?
A
Yes. The system is designed with strong anti-interference capability against water color, suspended solids, and bubbles, improving reliability in complex water samples.
Q
6. Does the JW-IoT analyzer support remote monitoring and data export?
A
Yes. The JW-IoT analyzer supports networked operation status monitoring and allows data export through USB. It also supports RS485, RS232, and 4–20 mA outputs for system integration.
Q
7. How long can the analyzer store historical data?
A
The analyzer can store more than three years of measurement data, supporting long-term reporting and traceability.
Q
8. What operating environment is recommended?
A
A dry, ventilated, temperature-controlled indoor space is recommended, with ambient temperature maintained within 5–28°C and humidity below 90% non-condensing.
Q
9. Why choose JW-IoT for online total nitrogen monitoring?
A
JW-IoT provides a total nitrogen analyzer designed for reliable automatic monitoring, combining low detection limit, automatic cleaning, auto calibration, flexible communication, and long-term historical data storage for smart water quality projects.
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