Table of Contents
Section 1 SBE 25plus quick start guide........................................................................................ 3
Section 2 Specifications.................................................................................................................... 5
2.1 Mechanical................................................................................................................................... 5
2.1.1 Dimensions..........................................................................................................................5
2.1.2 Connectors and cables........................................................................................................5
2.2 Communications.......................................................................................................................... 8
2.3 Electrical....................................................................................................................................... 8
2.4 Analytical...................................................................................................................................... 8
Section 3 Overview............................................................................................................................. 9
3.1 Integration with other equipment for real-time data collection...................................................... 9
3.2 Integration with other equipment for autonomous operation...................................................... 11
Section 4 Set up sensor and verify operation............................................................................ 13
4.1 Software menu items................................................................................................................. 14
4.2 Communication troubleshooting................................................................................................. 14
4.3 Prepare the 25plus for vertical or horizontal deployment........................................................... 15
4.3.1 Vertical deployment........................................................................................................... 15
4.3.2 Horizontal deployment.......................................................................................................16
4.4 External power and cable length................................................................................................ 16
4.5 Battery pack............................................................................................................................... 17
4.6 Plunger switch............................................................................................................................ 19
Section 5 Deployment and recovery.............................................................................................21
5.1 Set up for deployment................................................................................................................ 21
5.1.1 Example setup...................................................................................................................22
5.2 Pump operation.......................................................................................................................... 23
5.3 Real-time data setup.................................................................................................................. 23
5.4 Real-time data collection............................................................................................................ 24
5.4.1 Standard output format .....................................................................................................25
5.4.1.1 Equations to write user-made software.................................................................... 25
5.4.2 Real-time data collection with a Deck Unit........................................................................ 27
5.4.3 Output format for autonomous water sampler................................................................... 27
5.5 Recommendations for quality data............................................................................................. 27
5.6 Recover 25plus from deployment.............................................................................................. 28
Section 6 Transmit and convert data........................................................................................... 29
6.1 Transmit data with RS232.......................................................................................................... 29
6.2 Transmit data with USB ............................................................................................................ 30
6.3 Convert data............................................................................................................................... 30
Section 7 Maintenance..................................................................................................................... 31
7.1 Corrosion precautions................................................................................................................ 31
7.2 Plumbing.................................................................................................................................... 31
7.3 Clean pressure sensor............................................................................................................... 31
7.4 Conductivity cell......................................................................................................................... 32
7.5 Disassemble and reassemble TC duct...................................................................................... 32
7.6 Replace batteries....................................................................................................................... 34
7.7 Clean bulkhead connectors........................................................................................................ 36
7.8 Examine O-rings........................................................................................................................ 38
7.9 Calibration.................................................................................................................................. 38
7.9.1 Conductivity....................................................................................................................... 38
7.9.2 Pressure............................................................................................................................ 38
7.9.3 Temperature...................................................................................................................... 39
7.10 Spare parts and accessories.................................................................................................... 39
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