The Desktop Dissolved Oxygen Meter EZL-DDO121 measures dissolved oxygen in mg/L, ppm, or % saturation with a water-resistant membrane keypad and a simultaneous temperature display. The temperature measurement range falls from -10 °C to 110 °C with DO accuracy of ± 0.3 % and ± 0.4 %. An automatic pressure compensation of 80 kPa to 105 kPa can improve measurement precision and built-in automatic temperature compensation (ATC) of 0 °C to 100 °C for temperature variations.
| Parameters | Concentration, Saturation, Temperature |
| DO Range | 0.00 to 20 mg/L (ppm) |
| Resolution | 0.01/0.1 |
| DO Accuracy | ± 0.3 % ± 0.4 mg/L |
| DO Saturation | 0.0 to 200 % |
| Saturation Resolution | 0.001 |
| Saturation Accuracy | ± 2.0 % FS |
| Temperature Measuring Range | -10 °C to 110 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ± 0.1 °C |
| Temperature Compensation Range | 0 °C to 100 °C (Automatic) |
| Salinity Compensation Range | 0.0 to 50.0 g/L |
| Air Pressure Compensation Range | 80 to 105 kPa |
| Air Pressure Resolution | 1 |
| Air Pressure Accuracy | ± 2 % |
| Stability | ± 0.07 mg/L/1h |
| Response Time | ≤ 30 s (25 °C, 90 % Response) |
7-inch screen with high resolution of 1024×600
Auto-calibration, auto temperature compensation, data storage USB data export, clock, wireless printing, function setup, smart self-diagnosis
Adjustable screen brightness
Data storage of 1000 sets of test data can be edited and transferred
DO mode have functions of ATC, auto salinity compensation and auto pressure compensation
Wireless Bluetooth block
Optional PC software and cell phone APP
Polarographic DO electrode can measure temp., salinity and DO
Equipped with DO electrode calibration sleeve, only need 3 to 5 minutes for polarization
Combined diaphragm cap, replace sensitive membrane just by screwing new cap
IP54 dustproof and waterproof
Optional real time data transmission
Desktop DO meter is Polarographic instrument and used with magnetic stirrer
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