Multi-Parameter Online Water Quality Monitor | pH, COD, Ammonia, TP, TN

The global online water quality monitoring market continues to grow, driven by stricter environmental regulations and the need for real-time data in wastewater treatment, surface water protection, and industrial process control. For plant operators and environmental agencies, choosing a reliable multi-parameter online water quality monitor that covers critical parameters with high accuracy is no longer optional — it is essential for compliance, operational efficiency, and cost control.

Why an Integrated Multi-Parameter Platform?

Traditional single-parameter analyzers create data silos, increase maintenance costs, and often suffer from compatibility issues. A modern multi-parameter water quality analyzer integrates chemical and sensor-based measurements into one unified platform, delivering continuous, synchronized data for better decision-making.

Product Spotlight: ERUN-SZ-M630 Online Water Quality Monitor

The ERUN-SZ-M630 is a high-performance online water quality monitoring system designed to measure COD, ammonia nitrogen (NH₃-N), total phosphorus (TP), total nitrogen (TN), permanganate index, and can be integrated with probe-type sensors for pH, dissolved oxygen (DO), turbidity, conductivity, and suspended solids (SS). All ranges are customizable.

Key Technical Specifications

Parameter	Details
Measurement items	COD, NH₃-N, TP, TN, permanganate index (plus pH, DO, turbidity, conductivity as options)
Measuring ranges	COD: 0–200/500/1000 mg/LNH₃-N: 0–10/20/50 mg/LTP: 0–2/5/10 mg/LTN: 0–20/50/100 mg/L (customizable)
Accuracy	Repeatability ≤3%; zero drift ≤3%; span drift ≤3%; oscillation error ±5%
Display	7-inch color touchscreen, Linux-based platform
Data & connectivity	IPv4/IPv6, TCP/IP, USB & TF card support for data export and program upgrades
Power supply	(220±22) VAC, (50±1) Hz
Operating temperature	(0–50)°C
Dimensions	670×1460×680 mm (W×H×D); module: 210×420×210 mm
Weight	<200 kg

Core Advantages

Turbidity automatic compensation – Minimizes interference from suspended particles.
Remote data access – Automatically uploads key parameters for off-site analysis and early warning.
User-friendly interface – Large touchscreen with intuitive menu navigation.
Future-proof expansion – Supports software updates and large storage via TF card.

Global Certifications for Export

As a professional water quality monitor manufacturer, ERUN ensures full compliance for international markets. The ERUN-SZ-M630 holds CE certification, ISO 9001, and RoHS certification — meeting EU safety, health, and environmental requirements. This makes it a trusted choice for buyers in North America, Europe, Southeast Asia, and the Middle East.

Typical Applications

Municipal & industrial wastewater treatment plants – Real-time monitoring of COD, ammonia, TP, TN to ensure discharge compliance.
Environmental monitoring stations & rivers/lakes – Surface water quality assessment and pollution tracking.
Industrial process water – Cooling water, boiler feed water, and circulating water systems.
Drinking water source protection – Early warning for sudden contamination events.