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This page last changed on Jul 11, 2008 by sjensen.
Add seawater sensors at bottom of each oil chamber
Sample tube in bag to ¾ depth
Upper/lower purge may need to wait until, or be moved to after sampling.
May need to add an RO water rinse fluid. (non-toxicant) Verify that air compliance is at right volume.
Also look at cast 17-4 for bell housings.
brent: One could use a serial port or ethernet for communications to the ESP
brent: Core must be work from 2C to 35C
gene: Test urathane bags for oil compatibility
gene: Pack toxicant bag in PVC or similar hard container
gene: Don't servo on pressure, just monitor it during decompression
brent: measure amplitude of sample pump's pressure impulses
brent: Modify ESP scripts to purge into DWSM before starting sample processing
gene: Add an external bag for DI Water to mix with toxicant
brent: Add filter on raw water inhaled into bags when rinsing them
brent: Measure compliance when filling bells with oil
jon, gene, et al.: Invert bells when filling with oil
gene: Dish out top plate to control air bubble size
gene: consider stainless for casting bell housings
jon: 3 threads on HP oil pump motor housing is bare minimum
gene: O-ring on HP oil pump motor housing may be damaged on assembly
mike: put O-ring on inside wall to prevent this
Need fuses on power
- Yes I do need to add then and I will
Need to add fan for 600W
- See last comment in this paragraph
Consider indicator lights
Monitor input and output voltages
- I need to investigate how to do this within the current hardware
May need to mointor fan operation
Also, size internal heat fins to hold heat of 1 decomp.
Pressure switches, use NC instead of NO since most tend to fail open as opposed to fail closed.
- good suggestion, CPLD allows for this change in logic state
Not much margin over 4000m on PT's, check the % over reading capacity.
- While we may not be able to read to the actual full depth ocean pressure this is not a big concern as we are mainly concerned that
we have decompressed to a save level. Since we use a compensation chamber we do not pump to pressure.
Plan to test fault conditions
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