Revo RMS fault finding (which probe has failed)

[Wibble]

Have a RMS probe that's failed (for non-Revo divers: monitors the scrubber usage using temperature, like the AP Inspiration TempStick).

Am struggling to work out which cassette is the broken one! If it's one way around (say #1 top, #2 bottom) then I get a complete fail, showing zero time left (after a few minutes underwater). If the other way around (e.g. #2 top, #1 bottom) then it shows a lower time left (e.g. 1h30) but not failure.

It's not a total failure until I've been in the water for a while which varies from a few mins to 30+ mins. The previous probe that failed was permanently broken, so it showed a red x on the Petrel.

 

[Heat Miser]

So on dry land, can you go into Scrubbers and then scroll though to the temperature page .... I know your asking a slightly more advanced question, but if it can't measure the ambient temperature above water it won't measure it below. ... all my faults have eventually shown up on the temperature page.

 

[Wibble]

So on dry land, can you go into Scrubbers and then scroll though to the temperature page .... I know your asking a slightly more advanced question, but if it can't measure the ambient temperature above water it won't measure it below. ... all my faults have eventually shown up on the temperature page.

On the Scrubber page it only shows the durations in hh:mm. I've not seen a "temperature page".

When pre-breathing, it's fine. OK, it takes a couple of mins to show some time on the scrubber time (bottom left hand corner of the main page on the Petrel in "tech" mode). Unless I sit there for longer, it will steadily increase; standard OP is to see it over 30 mins and jump.

It seems that after a few mins underwater -- maybe as long as 15 -- it starts messing around.

I've just ordered a replacement temperature probe; my issue is which one do I replace!

Am struggling to work out which cassette is the broken one! If it's one way around (say #1 top, #2 bottom) then I get a complete fail, showing zero time left (after a few minutes underwater). If the other way around (e.g. #2 top, #1 bottom) then it shows a lower time left (e.g. 1h30) but not failure.

Am thinking that if #1 top, #2 bottom and it shows a complete fail, then this indicates that #2 is faulty?


OK, a first world problem: eenie meenie miney mo... swap either and if it's fixed, yeee haargh, if not revert and swap the other one.

 

[lermontov]

On the Scrubber page it only shows the durations in hh:mm. I've not seen a "temperature page".

When pre-breathing, it's fine. OK, it takes a couple of mins to show some time on the scrubber time (bottom left hand corner of the main page on the Petrel in "tech" mode). Unless I sit there for longer, it will steadily increase; standard OP is to see it over 30 mins and jump.

It seems that after a few mins underwater -- maybe as long as 15 -- it starts messing around.

I've just ordered a replacement temperature probe; my issue is which one do I replace!


Am thinking that if #1 top, #2 bottom and it shows a complete fail, then this indicates that #2 is faulty?


OK, a first world problem: eenie meenie miney mo... swap either and if it's fixed, yeee haargh, if not revert and swap the other one.

find a buddy with a revo and swap cassettes too see if its the probe or the receiver

 

[GLENNY B]

Have a RMS probe that's failed (for non-Revo divers: monitors the scrubber usage using temperature, like the AP Inspiration TempStick).

Am struggling to work out which cassette is the broken one! If it's one way around (say #1 top, #2 bottom) then I get a complete fail, showing zero time left (after a few minutes underwater). If the other way around (e.g. #2 top, #1 bottom) then it shows a lower time left (e.g. 1h30) but not failure.

It's not a total failure until I've been in the water for a while which varies from a few mins to 30+ mins. The previous probe that failed was permanently broken, so it showed a red x on the Petrel.

Following your thread

 

[mr_v]

Get a rEvo w/o RMS

 

[broncobowsher]

If you already ordered a replacement, it will be 50/50 if you got it right the first try.
I would put the new on in the bottom, that way you could rotate it to the top and still have fresh scrubber if the first guess didn't work.

It's not like you need the RMS. I specifically ordered my rEvo without it as it failed so much. The pre-2018 was extremely bad. The newer stuff is a lot better.

 

[Wibble]

Strangely enough I’ve kind of become a lot less reliant upon the RMS over the past couple of years as it became more intermittent.

The first time it showed zero I was really quite concerned so stopped on the bottom to check I wasn’t hypercapnic for a few mins, holding my breath, etc. Then realised the RMS was obviously faulty and…. after a few mins, it jumped back up to 3 hours.

It’s now reliably broken and I’m just going to fix it as part of the off-season servicing. Even getting a couple of the cylinders tested — that’s commitment

 

[mr_v]

Sorb is practically free in the UK, why do you bother with RMS?

 

[Wibble]

Just bought 6 x 20kg tubs for $700