6625AF - Uncategorized YSI - Free user manual and instructions
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| Product Type | Water Quality Multiparameter Sonde |
| Brand | YSI |
| Model | 6625AF |
| Measurement Parameters | Temperature, Conductivity, Dissolved Oxygen, pH, ORP, Turbidity, Depth (optional) |
| Temperature Range | -5 to 50 °C |
| Conductivity Range | 0 to 100 mS/cm |
| Dissolved Oxygen Range | 0 to 500 % air saturation (0 to 50 mg/L) |
| pH Range | 0 to 14 |
| Maximum Depth Rating | 200 meters (656 feet) |
| Communications | RS232, SDI-12, optional USB adapter |
| Data Memory | Up to 500,000 readings |
| Battery Life | Approximately 90 days with alkaline batteries |
| Dimensions (L x D) | 610 mm x 76 mm (24 in x 3 in) |
| Weight | 2.5 kg (5.5 lbs) |
| Power Source | 6 AA alkaline batteries or external 12 VDC |
| Housing Material | PVC and stainless steel with anti-fouling coating |
| Main Functions | Real-time monitoring, data logging, calibration, GPS coordinate integration |
| Maintenance | Quick-release wipers, replaceable sensor caps, O-ring inspection |
| Safety | Low-voltage operation, IP67 waterproof housing |
| Spare Parts | Sensor modules, wiper assemblies, cables, O-rings are field-replaceable |
| Repairability | Modular design allows in-field replacement of sensors and electronics |
| General Applications | Freshwater, marine, groundwater, and wastewater monitoring |
Frequently Asked Questions - 6625AF YSI
How often should I calibrate the YSI 6625AF sonde?
Calibration frequency depends on usage and required accuracy. For most applications, calibrate before each field campaign or at least once a week. For dissolved oxygen and pH, a two-point calibration is recommended whenever accuracy is critical.
What is the maximum depth rating for the 6625AF?
The 6625AF is rated for continuous underwater operation up to 200 meters. The pressure housing and connectors are designed to withstand the corresponding hydrostatic pressure.
How do I clean the sensors on my 6625AF?
Rinse the sensors with clean freshwater immediately after use. For stubborn fouling, use a soft brush with a dilute solution of mild soap. Do Not use abrasive cleaners or solvents on the optical windows. After cleaning, recalibrate if necessary.
Can I replace a faulty sensor myself?
Yes, the 6625AF uses a modular sensor system. Each sensor (pH, conductivity, DO, etc.) can be unplugged and replaced in the field with standard tools. Follow the manual's torquing and O-ring instructions to maintain a watertight seal.
How do I transfer logged data to my computer?
Connect the sonde via the serial cable (or optional USB adapter) to a PC, then use the current YSI data software. Select "Download" from the menu, choose the file format, and the software will transfer all logged parameters.
What is the battery life and how can I extend it?
With 6 fresh AA alkaline batteries, the sonde typically operates for 90 days in logging mode. To extend battery life, reduce logging frequency, enable power-saving mode, and don't leave the sensor in a hot environment. External 12V DC power is also an option.
How do I prepare the sonde for long-term storage?
Clean and dry all sensors, then fill the sensor ports with a humid sponge or protective cap. Remove or disable batteries. Store the sonde in a cool, dry place away from freezing temperatures. Reinstall batteries and calibrate before the next deployment.
Does the 6625AF support real-time monitoring?
Absolutely. In addition to logging, you can connect the sonde to a laptop or data transmitter and view live readings on the display or via software. The SDI-12 interface also enables integration with third-party telemetry systems.
What are the advantages of the optical dissolved oxygen sensor?
The optical DO sensor uses luminescent technology to measure oxygen quickly and drift-free, with no warm-up period and no maintenance of membranes or electrodes. It consumes less power than the traditional Clark cell and remains accurate in fouling environments.
How do I ensure the anti-fouling wipers work correctly?
Before deployment, check the wiper blades for damage and ensure they rotate freely. Replace wipers at least once per year or after 100 deployments. Use the wiper interval setting in the sonde menu to automatically clean the optics during long deployments.
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USER MANUAL 6625AF YSI
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Product information
Brand : YSI
Model : 6625AF
Category : Uncategorized