Discussion of 18 Feb 2010
Luke Coletti, Doug Pargett, Jim Birch
- For July, 2010 WF cruise, ESP team will use Johnson lab 1Km housing. There were some issues with the last time it was used; weird readings--discussion ensued as to why readings not normal.
- Doug to draw up plans for pressure housing based on original aluminum design, keeping original diameter, using 2 radial o-rings to seal end caps.
- Doug will draw up plans for probe head opening using the actual probe he has, and getting rid of the current goofy SAE opening.
- We will make 2 Ti housings; ESP pays for 1, Johnson lab pays for 1.
- Eventually we will power the deep ISUS from our Deep-Sea Power and light battery stack, which will allow recharging if needed. But for July we'll use Luke's battery pack (especially since it's such a short deployment).
ISUS specs
Based on Luke's LOBO experiences, one 'single stick' battery pack will power ISUS for 6 months if sampling once/hr. Thus, 20 min sampling rate would last ~1.2 months. Duration scales proportionally.
Continued Discussion 31 August 2010
Luke, Doug, Scott, Jim, Ken
1. How will we power ISUS on DESP? ISUS runs on 8-20V, 6-7 watts nominal. Current plan is to run off the DESP batteries.
2. Ken said they can build 2 ISUS starting right now. One will be shallow, one deep. We have also asked for 3 deep probes ($2200/ea).
3. Luke will give Doug plans to modify the calibrator, and new flow-cell for calibrations; these are nec with the new titanium housing design.
4. Doug will send plans for Ti housing out for bid. Next steps will be determined by cost/time estimates. Ken has offered us his aluminum housings for deep work.
