550A
The YSI 550A Handheld Dissolved Oxygen Instrument is a microprocessor based, digital instrument with a field-replaceable YSI dissolved oxygen probe. The YSI 550A DO Instrument is impact-resistant and waterproof. It is designed for field use and is available with cable lengths of 12, 25, 50, or 100 feet (3.5, 7.5, 15, 30.5 meters). The body of the probe has been manufactured with stainless steel to add rugged durability and sinking weight.
Availability: Commercially Available
| Manufacturer |
| YSI, Inc. |
| Product Name |
| 550A |
| Detection Category |
| Chemical |
| Detection Principle |
| Sensors; |
| Detection Method |
| Sensors |
| Application |
| Water Quality; |
| Equipment Type |
| Sensor |
| Product Synopsis |
| The YSI 550A Handheld Dissolved Oxygen Instrument is a microprocessor based, digital instrument with a field-replaceable YSI dissolved oxygen probe. The YSI 550A DO Instrument is impact-resistant and waterproof. It is designed for field use and is available with cable lengths of 12, 25, 50, or 100 feet (3.5, 7.5, 15, 30.5 meters). The body of the probe has been manufactured with stainless steel to add rugged durability and sinking weight. |
| Availability |
| Commercially Available |
| Technology Readiness Level (TRL) |
| 9 |
| User Feedback Sources |
| Indifferent/No user feedback |
| Dimensions |
| 4.7 x 9 in (120 x 229 mm) |
| Weight |
| <5 lbs.; 2 lbs (0.91 kg) |
| Power Requirements |
| Alkaline Battery; 4 alkaline C-cells |
| Transportability |
| Pocket Size |
| Ruggedness |
| Waterproof/Resistant; Dust; IP67, high impact resistant |
| Consumables |
| <$1,000/year; Sensors, membrane kits (every 8 wks), DO module and battery |
| Calibration Schedule |
| Yes |
| Suggested Routine Maintenance |
| May require replacement of DO electrodes |
| Shelf Life |
| <6 months; 3 Months |
| Unit Cost |
| $900.00 |
| Maintenance Cost |
| Membrane kits $56 |
| Other Chemical Targets |
| Measures dissolved oxygen |
| Sample Introduction |
| Liquid |
| Sensitivity/Detection Limits |
| %; mg; 0 to 500% air saturation dissolved oxygen %, 0 to 50 mg/L oxygen |
| Known Interferents/Inhibitors |
| Chlorine, sulfur dioxide, nitric oxide, and nitrous oxide can affect readings by behaving like oxygen at the probe. |
| Start Up Time (From Cold Start To Sample Ready) |
| 5 – 15 minutes |
| Response Time (Sample Application To Output) |
| Continuous (<30 seconds); 9 seconds |
| Training Required |
| <1 day training |
| Manuals Available |
| Yes |
| Warranties |
| 3 year instrument, 1 year DO module |
