DOG-3082 Online Industrial Dissolved Oxygen Meter

The DYDOG-3082 Industrial Dissolved Oxygen Meter is a new-generation Chinese (English) microcomputer-based instrument developed by our company. It features Chinese (English) display, Chinese (English) menu-driven operation, full intelligence, multifunctionality, high measurement accuracy, and strong environmental adaptability. It can be paired with the DOG-208 polarographic electrode to automatically achieve wide-range measurements from ppb to ppm levels. It is a specialized instrument for measuring dissolved oxygen content in liquids such as boiler feedwater, condensate, and environmental wastewater.

Instrument Features:
– New Panel Design: Cast aluminum housing with a metallic finish, creating a high-end E-era water analysis instrument.
– Full Chinese (English) Display: User-friendly interface with high-resolution LCD module. All data, statuses, and operation prompts are displayed in Chinese (English), with no manufacturer-specific symbols or codes.
– Simple Menu Structure: Text-based user interaction. Compared to traditional instruments, the DOG-2082 offers many additional features, but its categorized menu structure and computer-like operation make it clearer and more convenient to use. No need to memorize operation steps or sequences; simply follow the on-screen prompts without referring to the manual.
– Multi-Parameter Simultaneous Display: Displays oxygen concentration, input/output current, temperature, time, and status on a single screen. The main display shows oxygen concentration in a 10×10 mm format for clear visibility at a distance. Six secondary displays in 5×5 mm format show input/output current, temperature, status, day of the week, date, and time to meet different user habits and provide a time reference.

Technical Specifications:
1. Measurement Range:
– 0–100.0 µg/L; 0–20.00 mg/L (auto-switching); 0–60°C;
– Resolution: 0.1 µg/L; 0.01 mg/L; 0.1°C;

2. Basic Instrument Error:
– µg/L: ±1.0% FS; mg/L: ±0.5% FS; Temperature: ±0.5°C;

3. Repeatability: ±0.5% FS;

4. Stability:** ±1.0% FS;

5. Automatic Temperature Compensation Range: 0–60°C (reference temperature: 25°C);

6. Response Time:
– <60 seconds (98% of final value at 25°C);
– 37°C: 98% of final value <20 seconds;

7. Clock Accuracy: ±1 minute/month;

8. Output Current Error: ≤±1.0% FS;

9. Isolated Output:
– 0–10 mA (load resistance <1.5 kΩ);
– 4–20 mA (load resistance <750 Ω);

10. RS485 Communication Interface (optional);

11. Data Storage Capacity: 1 month (1 point/5 minutes);

12. Data Retention Without Power:** 10 years;

13. Alarm Relay: AC220V, 3A;

14. Power Supply: 220V±10% AC, 50±1 Hz;

15. Dimensions:
– Instrument: 146 (L) * 146 (W) * 150 (D) mm;
– Panel cutout size: 138 * 138 mm;

16. Weight: Secondary unit: 1.0 kg;

17. Operating Conditions: Ambient temperature 0–60°C, relative humidity <85%;

18. Inlet/Outlet Connection Pipes: Hard or soft pipes with outer diameters of Φ8, Φ10, or Φ12 mm.