Labman
Portable Dissolved Oxygen Meter LMDO4P (Polarographic Sensor, USB Interface)
Portable Dissolved Oxygen Meter LMDO4P (Polarographic Sensor, USB Interface)
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Portable Dissolved Oxygen Meter LMDO4P is designed for accurate dissolved oxygen and oxygen saturation measurement in environmental, industrial, laboratory, and field water testing applications. The compact handheld instrument provides reliable performance for routine dissolved oxygen monitoring and water quality analysis.
The meter uses a polarographic dissolved oxygen electrode for stable and precise DO measurement across a wide range of liquid samples. It supports dissolved oxygen measurement in mg/L or ppm along with oxygen saturation percentage analysis, making it suitable for environmental monitoring and industrial process applications.
LMDO4P features 1 or 2-point calibration using air-saturated water or zero oxygen solution to ensure accurate measurement performance. Automatic temperature compensation improves reading accuracy over varying sample temperatures, while manual salinity and barometric pressure correction enhance dissolved oxygen measurement precision.
The instrument includes auto-read endpoint detection that locks stable readings automatically or manually for consistent analytical results. A backlit LCD display provides clear visibility during operation, while internal memory stores up to 100 data readings for future recall and documentation.
USB communication interface enables data transfer and external power adaptor connection. Battery-powered portable operation with automatic shutdown and power-saving functions makes the instrument ideal for on-site field analysis and mobile water quality monitoring.
LMDO4P is widely used in environmental testing, aquaculture, wastewater treatment plants, educational laboratories, food processing, fisheries, and industrial water quality applications.
Key Features
Portable dissolved oxygen and saturation measurement
Polarographic dissolved oxygen electrode
DO measurement in mg/L or ppm
Oxygen saturation measurement up to 200%
1 or 2-point calibration system
Automatic temperature compensation
Salinity and barometric pressure correction
Auto-read endpoint detection
USB communication interface
Backlit LCD display
Internal memory for up to 100 readings
Battery-powered portable operation with carrying case
Technical Specifications
| Parameter | Specification |
|---|---|
| Dissolved Oxygen Range | 0.00 to 20.00 mg/L (ppm) |
| Dissolved Oxygen Resolution | 0.01 mg/L (ppm) |
| Dissolved Oxygen Accuracy | ±0.5 mg/L (ppm) |
| Saturation Range | 0.0 to 200.0% |
| Saturation Resolution | 0.1% |
| Saturation Accuracy | ±2.0% |
| Calibration | 1 or 2 Points |
| Temperature Compensation | 0 to 50°C / 32 to 122°F, Automatic |
| Pressure Correction | 60.0 to 113.3 kPa / 450 to 850 mmHg, Manual |
| Salinity Correction | 0.0 to 50.0 ppt, Manual |
| Display | LCD |
| Hold Function | Selectable Manual or Automatic Hold after Endpoint |
| Auto Power OFF | 15 Minutes, If Not in Use |
| Carrying Case | Available |
| Reset Function | Yes |
| Date & Time | Yes |
| Memory | Up to 100 Data Readings |
| Connector | 6-pin Mini-DIN |
| Communication | USB Interface |
| Power Supply | 3 × 1.5V AA Batteries or 5V DC Power Adaptor |
| Dimensions (L×W×H) | 345 × 85 × 300 mm |
| Weight | 1 kg |
Applications
Portable water quality testing
Environmental and wastewater monitoring
Aquaculture and fisheries
Industrial process water analysis
Educational and research laboratories
Food and beverage processing
Field dissolved oxygen analysis
