Optical water quality sensor DBSM-2

ORPpHdissolved oxygen

Overview

The online multiparameter water quality sonde is a rugged probe designed for continuous seawater monitoring. It supports multiple digital sensors, stores calibration data in each sensor, and is built for long-term online deployment in marine environments.

Core Functions & Advantages

• Comprehensive parameter detection: temperature, pH, ORP, dissolved oxygen (DO), turbidity (SS, transparency), conductivity (TDS, salinity), COD, TOC, BOD, ammonia, nitrate, total nitrogen (TN), potassium, chlorophyll a, blue-green algae, CDOM/fDOM, PTSA and depth.
• Universal compatibility: universal 3.5 mm audio connector platform supporting up to 7 ports; all sensors are digital and compatible with RS485 and Modbus RTU protocols; sensors store calibration parameters internally.
• Practical features: supports low-power mode, water-leakage alarm, and includes a motorized wiper to maintain sensor cleanliness; independent structural design ensures failure or leakage of one sensor does not affect others.
• Flexible calibration: user-defined calibration for all parameters (slope K and intercept B adjustment) with detailed calibration procedures and standard solution preparation methods provided.

Technical Specifications

• Interface & communication: IP68 connector; RS-485; Modbus RTU protocol; default baud rate 9600.
• Operating environment: operating temperature 0 ~ 45 °C; storage temperature -10 ~ 50 °C; allowable flow rate < 3 m/s.
• Power supply: 12 ~ 24 V DC; power consumption 20 ~ 120 mA @ 12 V (operating mode), < 3 mA @ 12 V (low-power mode).
• Physical characteristics: materials: 316L stainless steel and POM; dimensions: Φ106 × 376 mm; weight: not specified.
• Measurement performance: response time 2 ~ 45 s; accuracy and measurement range depend on sensor model; resolution up to 0.01 level for parameters such as pH and DO.

Calibration & Maintenance

• Calibration: adjustable slope (K) and intercept (B) for each parameter; detailed calibration procedures and standard solution preparation methods provided for on-site calibration.
• Maintenance: built-in wiper for anti-fouling, water-leak alarm, and independent sensor housings for simplified replacement and reduced system downtime.

Applications

• Continuous seawater monitoring, coastal and offshore stations.
• Aquaculture farms and hatcheries.
• Environmental research and marine monitoring projects.
• Industrial effluent and desalination intake monitoring.