Innovative Technologies

Benchtop Dissolved Oxygen Meter (QXM-DM741)

Benchtop Dissolved Oxygen Meter (QXM-DM741)

Range: 0.000… 90 mg/L (ppm) Resolution: 0.01/0.1 Accuracy: ± 0.5% Saturation: 0.0… 600%
Features
  • 6.5-inch LCD screen with concise and user-friendly interface.

  • Built-in microprocessor chip with intelligent functions such as automatic calibration, ATC, data storage, clock display, USB output, function settings, wireless printing, and self-diagnosis information.

  • Includes automatic temperature compensation, automatic salinity compensation, and automatic pressure compensation.

  • Polarographic DO electrode with short polarization time (3–5 minutes).

  • Wireless Bluetooth printing and real-time data transfer to mobile phone (optional).

  • Omron long-lasting and light-touch key can be used over 100,000 times.

  • Stores up to 1000 sets of test data, transferable to USB and viewable in Excel.

Technical Specification

Specifications

Dissolved Oxygen (DO)

Parameter Specification
Measuring Range (0–20.00) mg/L (ppm), (0–200.0)%
Resolution 0.1 / 0.01 mg/L (ppm), 1 / 0.1 %
Accuracy Electrode: ±0.10 mg/L, Meter: ±0.40 mg/L
Response Time ≤30 s (25℃, 90% response)
Residual Current ≤0.1 mg/L
Temp. Compensation (0 ~ 45)℃, auto
Salinity Compensation (0 ~ 45) ppt, auto
Pressure Compensation (80 ~ 105) kPa, auto
Auto Calibration Air saturated by water or water saturated by air
Electrode Type Polarographic

Temperature

Parameter Specification
Measuring Range (0 ~ 100)℃
Resolution 0.1℃
Accuracy 5 ~ 60℃: ±0.4℃; Others: ±0.8℃

🧾 Other Details

Category Specification
Display 6.5-inch LCD screen
Data Storage 1000 sets
Power 12V / 1A
Output USB
Ambient Temperature 5 ~ 35℃
Ambient Humidity ≤85%
IP Grade IP54
Dimensions / Net Weight 215 × 170 × 37 mm / 600 g
Shipping Size / G.W. 470 × 430 × 72 mm / 3 kg

📦 Standard Accessories

  • DO electrode

  • Temperature probe

  • DO filling solution

  • Power adapter

  • Manual