Dissolved Oxygen (DO) On-line Monitoring & Analyzing Instrument
Product Introduction
Developed for pollution sources and surface water, this instrument complies with the national standard Technical Requirements for Automatic Dissolved Oxygen Analyzers for Water Quality (HJ 99-2003), Water Quality — Determination of Dissolved Oxygen — Fluorescence Quenching Method (Trial) as well as HJ1404, HJ915.X series and HJ212. It can accurately, rapidly, economically and eco-friendly determine dissolved oxygen in water, and is widely used for water monitoring in environmental protection, water conservancy, chemical industry, municipal engineering and other fields.
Product Features
• Optical fluorescence measurement technology detects dissolved oxygen via fluorescence quenching change for high measurement stability.
• Compensates for errors caused by chemical and optical signal attenuation, ensuring long-term measurement precision while extending sensor service life.
• High-performance fluorescent membrane with excellent durability.
• No oxygen consumption for strong environmental adaptability.
• Optical measurement mode is not affected by water flow velocity for stable detection.
• Temperature compensation eliminates the impact of temperature change; optical compensation corrects fluorescent membrane aging and light source attenuation.
• Pre-calibrated digital sensor with built-in parameters; stable data output immediately after on-site installation to reduce inspection and commissioning time.
• Supports two-point calibration with standard pH solutions; able to view electrode operating status to judge health conditions.
• Configurable digital filtering and offset correction to improve data stability.
• Equipped with RS485 + Modbus protocol for system integration and remote maintenance.
Application Scenarios
Drinking water sources, watershed control sections, river discharge outlets and special water bodies.
