Nutrient AnalyzersTL-TN-300
Total Nitrogen Analyzer
Nutrient Analyzers
Total Nitrogen Analyzer
TL-TN-300
Online TN analyzer using chromotropic acid spectrophotometry. Range 0–5 mg/L, RS485 output.
Request a QuoteProduct Overview
The TL-TN-300 uses chromotropic acid spectrophotometry to measure total nitrogen online. Designed for effluent discharge compliance and biological nitrogen removal process optimization.
Working Principle
The sensor uses a continuous online measurement principle with automatic temperature compensation. The measurement signal is processed by an integrated microprocessor and transmitted via RS485 Modbus RTU for direct integration with PLCs, data loggers, and SCADA systems. The 4–20 mA analog output provides compatibility with legacy control systems.
Wiring & Signal Output
Power supply: 12–24 V DC (standard); 220 V AC with adapter
Primary output: RS485 Modbus RTU (address configurable 1–247)
Analog output: 4–20 mA (proportional to measured value)
Relay output: 2 × SPDT relay for alarm / dosing control
Communication: Modbus RTU function codes 03 / 06 / 16
Cable entry: M16 cable gland, IP68 submersible cable available
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement Principle | Chromotropic acid spectrophotometry |
| Measuring Range | 0–5 mg/L |
| Accuracy | 0.05 mg/L or ±10% |
| Resolution | 0.001 mg/L |
| Working Conditions | 0–50°C, 0–1 Bar |
| Power Supply | 24 VDC |
| Connection | Hose connection |
| Signal Output | RS485 Modbus RTU |
| Calibration | 2-point calibration |
| Protection | IP68 |
Key Features
- Chromotropic acid spectrophotometry
- High resolution: 0.001 mg/L
- Automatic reagent injection
- Designed for BNR process optimization
Typical Applications
Municipal wastewater effluentBiological nitrogen removalEnvironmental complianceIndustrial discharge
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