DO-1800 online dissolved oxygen meter is an intelligent online dissolved oxygen analyzer produced by our company using imported technology. It incorporates imported components and a dissolved oxygen membrane head, based on the latest polarographic analysis technology, advanced production processes, and surface-mount technology. By utilizing this series of advanced analytical technologies, the instrument ensures long-term stable and reliable operation with high accuracy. It features a Chinese menu-based operation and 485 communication functions. It can be widely used for continuous monitoring of dissolved oxygen values in solutions in industries such as chemical fertilizers, metallurgy, environmental water treatment projects, pharmaceuticals, biochemistry, food processing, aquaculture, and tap water.
Model: DO-1800
Name: DO-1800 Dissolved Oxygen Analyser
Measurement Range: 0–20.00 mg/L, automatic range switching; 0–60℃;
Resolution: 0.01 mg/L, 0.1℃;
Accuracy: ±0.5% FS for mg/L, ±0.3℃;
Automatic Temperature Compensation: 0–60℃;
Control Interface: Two sets of normally open relay contacts, with high-point and low-point alarm signals isolated via optoelectronic output;
Signal Isolated Output: 4–20 mA signal output protected by optocoupler isolation;
Relay: Adjustable relay hysteresis, relay load capacity: 3A, 220VAC;
Operating Conditions: Ambient temperature 0–60℃, relative humidity ≤90%;
Output Load: Load <300Ω (4–20 mA);
Operating Voltage: 220VAC ±10%, 50/60Hz;
Dimensions: 96×96×115 mm;
Cutout Size: 91×91 mm;
Weight: 0.9 Kg
◇ Large-screen dot-matrix LCD display with Chinese menu operation.
◇ Simultaneous display of multiple parameters: dissolved oxygen value, temperature, output current, alarm points, etc., for intuitive and easy reading, with prompts for range over-limit alerts.
◇ Alarm status displayed on the screen with accompanying ON signal output.
◇ Alarm status displayed on the screen with accompanying ON signal output.
◇ Communication function (optional): RS-485 communication interface (partially compatible with MODBUS protocol), 4–20 mA current output corresponding to DO values can be set arbitrarily.
◇ Adjustable hysteresis function to prevent frequent relay switching.
◇ Watchdog function: ensures the instrument will not crash.
◇ Core components sourced from internationally renowned brands.
◇ Factory settings can be restored. Power-off data protection >10 years.
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