Advalab Portable Dissolved Oxygen Meter ADPOM-504 measures dissolved oxygen from 0 to 19.99 mg/L with ±1.5% F.S. accuracy, and reads temperature at the same time. It adjusts readings automatically for temperature, and allows manual correction for salinity and air pressure. The meter stores up to 99 readings. Its Clark-type probe senses the oxygen dissolved in the liquid and gives direct DO and temperature readings.
| Measurement Parameters | Dissolved oxygen (%, ppm, mg/L) and temperature |
|---|---|
| DO Range | 0.0–199.9% (0.00–19.99 ppm) |
| DO Resolution | 0.1% / 0.01 ppm |
| DO Accuracy | ±1.5% F.S. |
| Temperature Range | 0–50°C (32–122°F) |
| Temperature Accuracy | ±0.3°C |
| Temperature Resolution | 0.1°C |
| Temperature Compensation | Automatic |
| Salinity Compensation | 0.0–50.0 ppt, 0.1 ppt resolution (manual) |
| Barometric Pressure Compensation | 500–1499 mmHg / 66.6–199.9 kPa (manual) |
| Membrane Coefficient | Adjustable |
| Calibration | 100% DO calibration |
| Electrode Type | Clark-type DO electrode |
| Sensor Life | Over 6 months with good maintenance |
| Probe Cable Length | 333 cm |
| Display | Large LCD showing DO and temperature, with stability indicator |
| Operating Conditions | 0–50°C, humidity below 80% |
| Storage Conditions | 0–60°C, humidity below 90% |
| Data Memory | 99 points with real-time clock stamp |
| Data Output | IrDA port for wireless printing; RS232 PC connection optional |
| Other Functions | Data hold, low-battery indicator |
| Auto Power-Off | Selectable: 20/30/40/60/90/120 min |
| Power Supply | 4 × AAA batteries |
| Meter Dimensions | 175 × 70 × 33 mm |
| Meter Weight | About 150 g (without batteries) |
Portable Dissolved Oxygen Meter ADPOM-504 is used for water quality testing in aquaculture such as fish and shrimp farming, in environmental testing including BOD analysis, and in laboratories and teaching institutions. It gives quick DO and temperature checks both in the field and at the bench.
