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***jradomski*** · 12th June 2008, 13:43

Quote: (Originally Posted by mattmexico)

yo all

I got a Polish diver here in my shop with a Mentes CCR with Hammerhead electronics.

We have some issues of connecting the sensors to the electronics. On both handsets all three sensors say failure and it seems as the handsets do not connect to the sensors.

All three sensors are good between 11.5 and 12.4 mv, so are the wires to the banana block checked with multimeter, the banana block itself going throu connectors with multimeter, connection soldering on other side of block is good, and fresh SWIFT batteries in the handsets. I have sprayed cleaner spray onto the connectors and opened them up a bit to give it better conectivity.

Still the sensors do not connect to the electronics. The diver has done a calibration before flying here and just out of the luggage it does not work anymore.

I do have some experience with my Optima and with it Hammerhead electronics ... and issues with it but never had such a persistant problem ....

Do you have any ideas what I could have missed ?.

greetings
Matt

FAIL indicated a calibration failure on last calibration.. ANY sensor with teh word FAIL is LOCKED OUT until a sucessful calibration.. To see what the systme sees, go to OPT then millivolt display.. it will display an approximate mv reading.. This is not calibrated so differences of at least +/- 1mv are expected..

FLush the loop with o2 once you get good mv readings in air and recalibrate... The handset will reject any cell that it measures at less than 40mv in oxygen..

12th June 2008, 13:43	#3 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,115	Re: Hammerhead / Mentes CCR electronic issue Quote: (Originally Posted by mattmexico) yo all I got a Polish diver here in my shop with a Mentes CCR with Hammerhead electronics. We have some issues of connecting the sensors to the electronics. On both handsets all three sensors say failure and it seems as the handsets do not connect to the sensors. All three sensors are good between 11.5 and 12.4 mv, so are the wires to the banana block checked with multimeter, the banana block itself going throu connectors with multimeter, connection soldering on other side of block is good, and fresh SWIFT batteries in the handsets. I have sprayed cleaner spray onto the connectors and opened them up a bit to give it better conectivity. Still the sensors do not connect to the electronics. The diver has done a calibration before flying here and just out of the luggage it does not work anymore. I do have some experience with my Optima and with it Hammerhead electronics ... and issues with it but never had such a persistant problem .... Do you have any ideas what I could have missed ?. greetings Matt FAIL indicated a calibration failure on last calibration.. ANY sensor with teh word FAIL is LOCKED OUT until a sucessful calibration.. To see what the systme sees, go to OPT then millivolt display.. it will display an approximate mv reading.. This is not calibrated so differences of at least +/- 1mv are expected.. FLush the loop with o2 once you get good mv readings in air and recalibrate... The handset will reject any cell that it measures at less than 40mv in oxygen.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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