Measurement Principle:
Salicylic acid optical colorimetry. Under the action of air, the sample and the color development agent are fully mixed and chemically reacted. According to the color change of the color development agent, the concentration of ammonia nitrogen is finally calculated.
PCM200-NH3N Ammonia Nitrogen Online Water Quality Monitor
Introduction
The
PROBEST PCM200-NH3N is a high-precision
online ammonia nitrogen analyzer designed for continuous real-time monitoring of ammonia nitrogen (NH₃-N) in water. Adopting the internationally recognized
salicylic acid spectrophotometry method, the monitor delivers stable, accurate and reliable measurement for drinking water, surface water, municipal wastewater, industrial wastewater and pollution discharge monitoring.
Key Features
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Salicylic Acid Optical Colorimetry – High accuracy, strong anti-interference, compliant with standard detection methods
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Sapphire Core 10-Port Valve – Excellent wear resistance, acid & alkali resistance, organic solvent resistance, long service life and high stability
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Unique Reference Optical System – Minimizes interference from slight displacement or contamination of the digestion chamber, ensuring stable readings
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Waste Liquid Separation Function – Separates high-concentration reaction waste and low-concentration cleaning waste for safer discharge
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Automatic Dilution Function – Automatically switches measurement ranges based on actual water quality conditions
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Three-Level User Authorization Management – Secure operation and management control
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Powerful Quality Control (QC) – Supports standard recovery, zero verification, parallel sample testing; auto/manual/remote startup
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Automatic Fault Diagnosis & Alarm – Parts failure, over-range, low reagent, overheating protection and real-time alarm upload
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Auto-Recovery After Power Failure – Automatically discharges residual liquid and restores working status after power reset
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Data Logging & Storage – Stores measurement data, process logs and alarm records for up to 3 years; data export via USB drive
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7-inch HD Touch Display – Intuitive interface, easy operation and real-time status monitoring
Applications
Drinking water plant inlet & outlet monitoring
Surface water, river, lake and reservoir environmental monitoring
Municipal wastewater treatment plant influent & effluent monitoring
Industrial nitrogen wastewater and pollution source discharge monitoring
Environmental protection online monitoring system
Specification
Range | 0-500mg/L (Customizable) |
Indication deviation | 0-10mg/L:20%* ≤±8%；50%* ≤±5%；80%* ≤±3% Range＞10mg/L，≤±3% |
Repeatability | ≤2% |
Resolution | 0.0001 mg/L (2 to 4 decimal places can be set) |
Display | 7 inch display |
Measurement mode | Continuous mode, periodic mode (adjustable from 1 hour to 30 days), fixed point mode, controlled mode, and manual mode are optional |
Calibration mode | Manual calibration or automatic calibration |
Maintenance cycle | General once a month |
power supply | 220VAC±10%，50HZ±10% |
Output | 4~20mA output |
Communication method | MODBUS RS-232、 RS-485 |
Environmental conditions | Temperature adjustable room, recommended temperature +5～40℃ Humidity ≤85% (no condensation) |
Size | 302*271*462mm |
Why Choose PROBEST PCM200-NH3N?
PROBEST is an ISO9001 certified manufacturer with professional R&D capabilities and multiple patents. We focus on developing reliable water quality monitoring instruments for global customers.
The PCM200-NH3N online ammonia nitrogen monitor features stable performance, low maintenance, high reliability and strong compatibility – ideal for long-term unattended online water quality monitoring.
The PCM200-NH3N Ammonia Nitrogen Water Quality Online Automatic Monitor is a professional continuous online analytical instrument independently developed by Probest. It is designed for real-time, long-term unattended monitoring of ammonia nitrogen (NH3-N), a core pollution indicator in water bodies.
Ammonia nitrogen is one of the key control parameters for wastewater discharge, surface water environmental supervision and sewage treatment process control. Our online ammonia nitrogen monitor automatically completes sampling, reagent addition, reaction, detection and data calculation. It can operate continuously 24/7 and upload measurement data remotely, helping environmental protection departments and factories achieve standardized emission monitoring.
Core Technical Specifications
Model: PCM200-NH3N
Measuring Range: 0–300mg/L (customizable range available)
Power Supply: AC 220V ±10%
Rated Power: 200W
Signal Output: Modbus RS485
Working Temperature: 5 ~ 40℃
Relative Humidity: ≤85%
Operation: 7-inch touch screen for parameter setting, data check & alarm viewing
Product Advantages
✅ High measuring precision, strong anti-interference capacity, stable operation under complex wastewater conditions
✅ Low reagent consumption, effectively reducing daily operation and maintenance costs
✅ Intelligent fault self-diagnosis function, automatic alarm for abnormal status
✅ Standard Modbus RS485 communication, easy to connect with PLC, SCADA and environmental monitoring platform
✅ Integrated cabinet design, convenient installation, suitable for indoor monitoring stations
✅ CEP certified, meets environmental online monitoring standards
Typical Application Fields
Municipal wastewater treatment plants
Industrial factory wastewater discharge outlets
Surface water environmental monitoring stations
Petrochemical, printing & dyeing, food processing wastewater monitoring
Aquaculture water quality supervision
We also supply a full series of PCM200 online water quality analyzers: COD, Total Phosphorus(TP), Total Nitrogen(TN), Nitrite, etc. One-stop water quality monitoring solution support is available.
Contact us to get quotation and technical datasheet.
