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Northern Monkey · 23rd November 2006, 13:16

I noticed while I owned the Boris a difference between the back-up handset readings and the main computer.

If the back-up handset was calibrated with oxygen the readings between computer and back-up would be differ on deeper diver, then match on the deco.
If the back-up handset was calibrated in air, the readings between the computer and back-up would start to differ on deco.

Slightly concerned over this I found if you calibrated the back-up handset in a pre known gas such as air or O2 it would not show linearity with the other gas O2 or air.

The unit contains 3 oxygen cells, all three are hardwired to the back-up display and are calibrated on this handset by 3 individual pots.

The main computer calibrates like a VR3.

Does your Boris do the same?

23rd November 2006, 13:16	#1 (permalink)
Northern Monkey New Member Current Rebreather/s: Inspiration Classic Ouroboros Other CCR Other Rebreather/s: Other CCR Join Date: Jun 2005 Location: England Posts: 25	O2 Cell linearity I noticed while I owned the Boris a difference between the back-up handset readings and the main computer. If the back-up handset was calibrated with oxygen the readings between computer and back-up would be differ on deeper diver, then match on the deco. If the back-up handset was calibrated in air, the readings between the computer and back-up would start to differ on deco. Slightly concerned over this I found if you calibrated the back-up handset in a pre known gas such as air or O2 it would not show linearity with the other gas O2 or air. The unit contains 3 oxygen cells, all three are hardwired to the back-up display and are calibrated on this handset by 3 individual pots. The main computer calibrates like a VR3. Does your Boris do the same? __________________ Death is not an option!
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