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SBE 25plus Sealogger CTD
The SBE 25plus Sealogger is the ideal research-quality CTD profiler for coastal, estuarine, and deep-water deployments. Pump-controlled, T-C ducted flow minimizes salinity spiking and allows for slow descent rates without slowing sensor responses, improving dynamic accuracy and resolving small scale structure in the water column. The 25plus supports numerous auxiliary sensors with eight A/D channels and two RS-232 data channels, with enough power for power-hungry sensors such as nitrate (e.g., SUNA) and CO2. The alkaline battery pack provides power for up to 55 hours of profiling. The 25plus is frequently used autonomously, recording data internally. It can also provide real-time acquisition and display over short cables via the RS-232 interface. Sea-Bird Scientific also offers a load-bearing cable for hand-hauled, real-time profiling. External power and communication can be provided with the SBE 36 Deck Unit and PDIM. The 25plus is easily integrated with a Sea-Bird Scientific Water Sampler; both real-time and autonomous auto-fire operations are possible.
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Key Features
- SBE 3F Temperature sensor, SBE 4C Conductivity sensor, strain-gauge Pressure sensor.
- Channels for up to ten auxiliary sensors (eight voltage output sensors and two RS-232 serial output sensors).
- RS-232 interface, internal memory, and internal alkaline battery pack (can be powered externally).
- Pump-controlled, T-C ducted flow to minimize salinity spiking.
- Upload via external bulkhead connector or fast upload of large data sets via internal USB connector.
- Depths to 600 or 6800 m.
- Stainless steel protection cage.
- Seasoft© V2 Windows software package (setup, data upload, real-time data acquisition, and data processing).
- Newest version of our Sealogger, field-proven since 1989.
- Five-year limited warranty.
Parameters Measured
Specifications
| Specification | Value |
|---|---|
| Communication Options | RS-232 |
| Depth Rating (Meters) | 600m, 6800m |
| Power Source | Internal , External |
| Housing Material Options | Plastic, Titanium |
| Onboard Memory | Yes |
| Connector | MCBH |
| Sampling Rate | 16 Hz (16 samples/sec) |
| Memory Capacity (Samples) | 2 GByte non-volatile FLASH (~ 1320 hours of data from T, C, P, & 8 auxiliary voltage sensors; auxiliary serial sensor data is sensor dependent |
| Power Consumption | 14-24 VDC or internal batteries 12 alkaline D-cells (see manual) |
| Accuracy | Conductivity: 0.0003 S/m; Temperature: 0.001 °C; Pressure: 0.1% of full scale range |
| Software | Seasoft© V2 |
| Resolution | Conductivity: 0.00004 S/m; Temperature: 0.0002 °C; Pressure: 0.002% of full scale range |
Accessories
Curious what accessories and spares you can purchase for the SBE 25plus Sealogger CTD? Get in touch with our experts for more information.
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