Online Conductivity Meter Salinity Meter for Aquariums All Sizes

Product Overview

1) Product overview

Product Features

- The DDG-2090 Online Conductivity/Resistivity (salinity) meter from BOQU is a microcomputer-based industrial instrument for continuous online measurement of water conductivity or resistivity. It offers a clear backlit LCD, simple operation and is designed for stable, high-performance monitoring in a variety of water systems — including aquariums of different sizes and multiple industrial applications.

Product Value

2) Product features

Product Advantages

- Wide selectable measurement ranges via electrode constants (0.1–200 μS/cm, 1–2000 μS/cm, 10–20,000 μS/cm; resistivity 0–19.99 MΩ with K=0.01).

Application Scenarios

- High resolution and accuracy (resolution down to 0.01 μS/cm, accuracy to 0.02 μS/cm; stability ≤0.04 μS/cm per 24 h).

- Automatic temperature compensation up to 99°C and temperature display.

- Outputs and controls: isolated 4–20 mA output (max load 500 Ω), RS485 communication, and 2 programmable relays (max 230V, 5A).

- Additional functions: dual relay control with adjustable delay, high/low alarm thresholds, backlit LCD display.

3) Product value

- Enables continuous, reliable salinity/conductivity monitoring for process control, water quality management and alarm-based protection of systems.

- Integration-friendly outputs (4–20 mA and RS485) allow connection to PLCs, SCADA or building-management systems for automation and remote monitoring.

- Accurate, stable measurements improve operational consistency, reduce manual testing, and support timely corrective actions.

4) Product advantages

- Robust industrial design with microcomputer control for stable, repeatable performance.

- Flexible measurement capability through interchangeable electrode constants to cover a broad conductivity/resistivity range.

- Multiple communication and control options (isolated analog output, RS485, dual relays) for easy system integration.

- Backed by BOQU’s production experience, R&D support and quality-focused manufacturing for dependable service and market reputation.

5) Application scenarios

- Continuous monitoring in industrial and municipal settings: thermal power plants, chemical fertilizer plants, metallurgy, environmental monitoring, pharmaceutical and biochemical processes, food and beverage production, running water treatment.

- Aquatic systems: online salinity/conductivity monitoring for aquariums and other controlled aquatic environments (freshwater and lower-salinity systems), public aquaria, hatcheries and research tanks.