YSI Model 550 Handheld Dissolved Oxygen Meter
Looking for a rugged, field worthy instrument for measuring dissovled oxygen? The new YSI 550A Dissolved Oxygen instument features a waterproof (IP-67), impact-resistant case and innovative field-replaceable dissolved oxygen electrode modules. Measure dissovled Oxygen and temperature simultaneously using YSI's proveb polarographic technology for oxygen and YSI temperature precision thermistors, the planetwide standard for accuracy. The new PE membranes provide faster response times with less stirring dependence - saving time with every reading!
Features:
3.5 and 7.5m cable lengths
Calibrate in either mg.L or % saturation
Faster reponse time
Manual salinity input from 0 to 70ppt
Over 2000 hours battery life
Screw-on cap membranes - PE membranes lessen stirring dependence
User-selectable temperature units (?C or ?F)
| Medium | Fresh sea or polluted air |
| Range | 0 to 500% air saturation |
| Resolution | 0.1% air saturation or 1% selectable |
| Accuracy | 0-200% : ±2% air sat. or ±2% of reading whichever is greater 200-500% : ±6% of reading |
| Dissolved Oxygen Sensor | Steady-state polarographic |
| Dissolved Oxygen Probe | Field-replaceable module |
| Temperature Units | Celsius or Fahrenheit user selectable |
| Temperature Specification | Range: *5 to +45°C Resolution: 0.1°C Accuracy: ±0.3°C |
| Parameter Compensation | Automatic temperature compensation for dissolved oxygen Automatic salinity compensation (0-70ppt) for dissolved oxygen Altitude compensati |
| Power | 4 alkaline C cells |
| Battery Life | Over 2000 hours at 25°C |
| Cables | 12 to 25 foot lengths (3.6m and 7.6m) |
| Other Features | Waterproof to IP-67 High-impact resistance Push-button calibrator Built-in calibration chamber Large backlit display Low battery indicator |
Dimension
| US | Metric | |
| W x L | 4.7 x 9\"\" | 119mm x 229mm |
Weight
| US | Metric | |
| W x L | 2 lbs | 0.91 kg |