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AZ Portable Dissolved Oxygen Meter
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DO Measuring Range: 0~199.9 (in %)
DO Measuring Range: 0~19.99 (in ppm or mg/l)
Temperature Measuring Range: 0~50.0℃
Battery: AAA x4 PCS
Standard Package: Meter, Batteries, Dissolve Oxygen (D.O.) Probe (840PAZ),
Manual, Carry Case, Electrolyte, Syringe, Membrane, O-ring
Specifications:
| Application | Electrochemistry | Warranty | 1 Year |
| Storage Temperature | Ambient | ||
| Product Type | Portable Meters | ||
| Product Brand | AZ Instruments | ||
| Product Grade | Analytical grade | ||
Accurate & Reliable DO Measurement for Water Quality, Lab, Aquaculture & Environmental Monitoring
The AZ 8401 Portable Dissolved Oxygen Meter is a high-precision, easy-to-use device designed for measuring Dissolved Oxygen (DO) in water in % saturation, ppm, or mg/L. Built for portability and field-readiness, it features a large LCD display, an economical Clark-type DO sensor, and a USB interface for data transfer.
The meter simplifies DO calibration with a one-touch 100% calibration function, and unlike galvanic electrodes, the Clark-type sensor requires less frequent electrolyte refilling, enhancing ease of maintenance. Whether used in water treatment, aquaculture, laboratories, or environmental research, the 8401 AZ DO Meter delivers consistent performance in a compact design.
Key Features & Benefits
- ✅ Multi-Unit Measurement – Reads dissolved oxygen in % saturation, ppm, or mg/L
- ✅ Clark-Type Electrode – Reliable and cost-effective DO probe technology
- ✅ 100% DO Calibration – Quick calibration in air-saturated environments
- ✅ Large LCD Display – Simultaneously shows DO and temperature values with stability indicator
- ✅ USB PC Interface – Enables real-time data transfer and analysis (optional cable/software)
- ✅ Low Maintenance Design – Less frequent electrolyte replacement than galvanic sensors
- ✅ Compact & Lightweight (150g) – Ideal for mobile fieldwork or on-site testing
- ✅ Complete Kit – Comes with probe, electrolyte, syringe, membrane, O-ring, and carry case
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AZ 8401 |
| DO Range (% Saturation) | 0 – 199.9 % |
| DO Accuracy (%) | ±1.5% F.S. |
| DO Resolution (%) | 0.1 % |
| DO Range (ppm / mg/L) | 0 – 19.99 ppm / mg/L |
| DO Accuracy (ppm) | ±1.5% F.S. |
| DO Resolution (ppm) | 0.01 |
| Temperature Range | 0 – 50.0 °C |
| Temperature Accuracy | ±0.3 °C |
| Temperature Resolution | 0.1 °C |
| Membrane Coefficient | Adjustable |
| Display Size | 44 × 26 mm LCD |
| PC Connectivity | USB interface (optional accessory) |
| Operating Temperature | 0 – 50 °C |
| Operating Humidity | <80% RH |
| Storage Temperature | 0 – 60 °C |
| Storage Humidity | <90% RH |
| Sensor Life | >6 months with proper maintenance |
| Power Supply | 4 × AAA batteries |
| Device Dimensions | 175 × 70 × 33 mm |
| Weight | ~150 g |
| Standard Package | Meter, Batteries, DO Probe (840PAZ), Manual, Electrolyte, Membrane, Syringe, O-ring, Carry Case |
| Optional Accessories | USB Cable and Software |
Applications
💧 Water Quality Monitoring – Tests DO levels in drinking water, wastewater, and surface water
🐟 Aquaculture & Aqua Farms – Ensures optimal oxygen conditions for aquatic life
🏭 Water Treatment Facilities – Supports compliance with regulatory DO limits
🧪 Laboratory & Research Use – Ideal for environmental science, biology, and chemical analysis
🌿 Field Environmental Testing – Portable solution for lakes, rivers, and ponds
🏊 Swimming Pools & Recreation Waters – Verifies oxygenation and water freshness
User-Friendly Features
✔ One-Touch Calibration – Easy air calibration in ventilated conditions
✔ USB Connectivity – Connects to PC for real-time monitoring and analysis
✔ Battery Operated (AAA x 4) – Portable and easy to maintain
✔ All-in-One Kit – Includes accessories for immediate deployment
✔ Minimal Maintenance Probe – Less downtime with low electrolyte consumption
Ordering Information
| Model | Description | Included Accessories |
|---|---|---|
| 8401 | Portable Dissolved Oxygen Meter (LCD + USB) | Meter, DO Probe (840PAZ), Electrolyte, Syringe, Membrane, O-ring, Manual, Batteries, Carry Case |
The AZ 8401 Dissolved Oxygen Meter delivers accurate and convenient DO measurements in a compact, field-ready design. With its easy calibration, USB connectivity, and low-maintenance Clark-type sensor, it is a versatile tool for anyone measuring oxygen levels in water—from labs and farms to rivers and treatment plants.