Oxygen Scientific GREENFLASH O2 Sensor

[SavageSeaCow]

Does anyone use a shearwater with these sensors? I’m going to use one alongside solid state sensors and I’m wondering how the calibration works, I.e. do you calibrate as normal?

 

[InWay2Deep]

Does anyone use a shearwater with these sensors? I’m going to use one alongside solid state sensors and I’m wondering how the calibration works, I.e. do you calibrate as normal?

Petrel 3 here. So I just put one in this weekend and it was a little wonkey at first. The readings were jumping from 0.0 to 3.4 to 0 to 1.6 back to 0 and then all around again. I hooked up the O2 and did a good 100% flush and it started reading normal so I did an O2 calibration and it started reading just like my K22D's and then the readings at air matched as well. So maybe it was 'asleep'? at first, but so far it seems like you just calibrate in O2 like normal but the air check maybe needs to be done after the 100% check now? Typically in my checklist I do an air check first then o2 check.

Again, I have NO idea what I'm doing, I got no instructions along w/ it but once I applied o2 it seemed to act just like the Galvanic's.

 

[slimshady]

I have been running them for more than 6 months now. XCCR with Petrel controller. I wake them up first by adding O2 with the MAV. They perform great.

 

[Dsix36]

I hope that price for 675,000 Euros is a typo

 

[SavageSeaCow]

I have been running them for more than 6 months now. XCCR with Petrel controller. I wake them up first by adding O2 with the MAV. They perform great.

I have been running them for more than 6 months now. XCCR with Petrel controller. I wake them up first by adding O2 with the MAV. They perform great.

Do you run galvanic cells alongside them? I’m just wondering how to calibrate the galvanic cell that’s connected to the same petrel. I know the GF is factory calibrated but I assume if you then “calibrate” the shearwater again you could throw off the calibration?

 

[SavageSeaCow]

I hope that price for 675,000 Euros is a typo

$675 per sensor. If they work the way they’re supposed to will be worth it. I’ve spent more money on dumber things.

 

[InWay2Deep]

Mine were $587 from KISS

 

[J-Vo]

Do you run galvanic cells alongside them? I’m just wondering how to calibrate the galvanic cell that’s connected to the same petrel. I know the GF is factory calibrated but I assume if you then “calibrate” the shearwater again you could throw off the calibration?

Yes I'm running two galvanic and one optical currently. I use it exactly the same as a galvanic. Your calibrating the PDC not the sensor. Only difference is you have to expose it to PPO2 of >0.35 to activate it before you start the linearity check. The sensor will stay active until it reads <0.35 for 15 minutes.

 

[missionmtb]

Petrel 3 here. So I just put one in this weekend and it was a little wonkey at first. The readings were jumping from 0.0 to 3.4 to 0 to 1.6 back to 0 and then all around again. I hooked up the O2 and did a good 100% flush and it started reading normal so I did an O2 calibration and it started reading just like my K22D's and then the readings at air matched as well. So maybe it was 'asleep'? at first, but so far it seems like you just calibrate in O2 like normal but the air check maybe needs to be done after the 100% check now? Typically in my checklist I do an air check first then o2 check.

Again, I have NO idea what I'm doing, I got no instructions along w/ it but once I applied o2 it seemed to act just like the Galvanic's.

This behavior is because they periodically check in while sleeping to see if there's oxygen. You have to activate them by bringing the pO2 above 0.5atm Conversely they need to be *below* 0.3atm to go to "sleep" again.

I'm running three and I get about 6 months out of them before I need to change the battery, but I forget to flush O2 below 0.3 atm sometimes so they stay awake on the ride home. Changing the battery is just taking the metal clip off with needle-nose pliers, carefully pulling the lid back while not unplugging the flex cable, popping in a new battery and re-clipping. Easy. Agree the fatty CR2477 batteries are about $1 USD per.

 

[Enevoldsen]

Does anyone have the exact measurements or a technical drawing of the sensor. I have a plan to install them in my SF2 but i think they are bigger than the ones it is build fore….