rEvo Rebreathers | Belgian rEvolutionary diving

Welkom bij rEvo rebreathers. We wensen u een boeiende "duik" in onze website.

Laatste nieuwtjes (zie nieuwspagina)

• CE Goedkeuring van de rEvo III
• Duik naar 200+ meter !

Ons gamma duiktoestellen

Een overzicht van de verschillende rEvo's vindt je hieronder:

rEvo II

De rEvo II is verkrijgbaar in 3 versies: er is de rEvo standaard, de rEvo mini en de rEvo micro. De versie mini is gericht op duikers met een kleinere gestalte. De micro versie is speciaal ontworpen om als compact geheel makkelijk mee te kunnen nemen op reis.
De rEvo II heeft geen CE keurmerk en wordt dus niet verkocht op de Europese markt.

rEvo III

De rEvo III is verkrijgbaar in twee versie's: de rEvo III standaard en de rEvo III mini. Ook hier is de rEvo III mini bedoeld voor duikers met een middelmatige tot kleine gestalte.

De rEvo III is CE gekeurd en heeft een  verbeterde WOB (Work of Breathing), vergeleken met de rEvo II.

Downloads

Hieronder vindt u een aantal links naar nuttige info zoals handleidingen, prijzen en info over de revodream.

Instructeurs

Hieronder vindt u een aantal links naar info over onze instructeurs.

FAQ veel gestelde vragen...

FAQ’s

1) What is an ‘ACTIVE WARNING SYSTEM’?
2) What is redundancy?
3) Why is a connector (fisher) on a controller system never allowed?
4) What do we consider as minimal safety requirements on any unit we ship?
5) How to connect the oxygen sensors to different electronic systems?
6) How long can I use the scrubbers on a rEvo rebreather?



1) What is an ‘ACTIVE WARNING SYSTEM’:

The definition we (and the Technical Committee of the CE)  give to 'active warning device' is following:

A  a device that gives a warning to the user, in case of an event, without the user having to do any effort for receive the warning
B  warning meaning: changing from one state to the other, when going from OK to NOT OK
 
criteria A   buzzer, light in front of the eye, ...  is ok
                 light or display clipped somewhere, so that the user must take action to look at it  ...  not ok

criteria B  a PPO2 indicator in front of the eye:  not ok: as there is not change of state when the event occurs, and the memory will wipe out the signal after some time

a HUD where a light starts or goes out when the event happens, combined with flashes or whatever= ok  as a 'change in state' is noticed


2) What is redundancy?

We define redundancy on 2 levels: electronic redundancy, and cell redundancy (till oxygen sensor level.)

Electronic redundancy means that the 2 or more measuring/display systems are not linked in any way, except for using the same input (oxygen sensors). This means that the systems are not linked anywhere else, besides where they make contact with the oxygen sensors: so cables shared, no batteries, no displays, no processors… nothing. To make correct electronic redundancy it is important that where the systems join the oxygen sensors, provision must be made that a failure on one system has no influence on the readings of the other system. (like using isolating splitters) It is not always possible to achieve this last completely.

Cell redundancy is achieved when there is no link at all between different electronic systems/displays, even including the oxygen sensors (no link means totally no fysical connection at all)  (example: each sensor having it’s own electronic display system)
 
 
3) Why is a connector (fisher) on a controller system never allowed?

Electric signals in a rebreather are mostly of one of the following type:

A very low voltage and current: the signals from the oxygen sensors: mostly millivolts and micro amp
B medium voltage and current: the battery for the solenoid, current going trough the solenoid: 6-12V and from 0.1 up to > 1 amp (peek) when the solenoid fires.

The differences in voltage and current between the 2 types are in general in the range of 1 to 10.000-100.000  (so 4 to 5 magnitudes!!)

When using a controller, both those signals generally go trough the same cables, and if correctly shielded, that is not a problem.
However, when using a connector in this cable system, and that connector is not 100% perfect, the slightest humidity or dirt into this connection system, will cause interference between the ‘high voltage/current’ lines, and the sensor reading lines, and will destroy the signals of the last.

As practice shows that a connector is never maintained so perfectly that there is not the slightest risk of this interference, every manufacturer uses hard-wired connections on their controllers.



4) What do we consider as minimal safety requirements on any unit we ship:

1 Any unit shipped must at least have 2 redundant electronic systems, minimum a primary electronic system, and a redundant back-up system
2 any unit must have at least 2 redundant displays that show the PPO2
3 any unit must have at least 1 ‘active warning system’


What we advise extra:

Any unit should have at least one redundant system up to oxygen sensor level.
Never should ALL your cells be shared by ALL systems  (meaning: better not to make any connection so that all grounds in your system are connected)


5) How to connect the oxygen sensors to different electronic systems:

Most redundant system in case off: (all offering redundancy on at least one sensor level!)

   3 cells / 2 electronic systems
·    2 rEvodreams:  2 sensors on dream 1 / 1 sensor on dream 2
·    1 rEvodream + 1 Shearwater: 2 sensors on dream / 1 sensor on SH

   3 cells / 3 electronic systems
·    2 rEvodreams + 1 Shearwater: each system reading 1 sensor
·    1 rEvodream + 2 Shearwaters: each system reading 1 sensor

   4 cells / 2 electronic systems
·    2 rEvodreams: each rEvodream reading 2 sensors
·    1 rEvodream + 1 Shearwater: 1 sensor on rEvodream / 3 sensors on SH

   4 cells / 3 electronic systems
·    2 rEvodreams + 1 Shearwater: 2 sensors on one dream, other systems 1 sensor
·    1 rEvodream + 2 Shearwaters: 2 sensors on dream, other systems 1 sensor

   5 cells / 2 electronic systems
·    1 rEvodream + 1 Shearwater: 2 sensors on dream / 3 sensors on SH

   5 cells / 3 electronic systems
·    2 rEvodreams + 1 Shearwater: 3 sensors on SH, one on each rEvo dream
·    1 rEvodream + 2 Shearwaters: 3 sensors on SH 1, one on each other system


Alternative systems also used, but less redundant:

   4 cells / 2 electronic systems
·    1 rEvodream + 1 Shearwater: 2 sensors on rEvodream / 3 sensors on SH, so splitting 1 sensor

   4 cells / 3 electronic systems
·    2 rEvodreams + 1 Shearwater: 3 sensors on Shearwater, of those 2 are splitted to one rEvodream, second rEvodream on 1 sensor only (using 2 splitters)

   5 cells / 3 electronic systems
·    2 rEvodreams + 1 Shearwater: 3 sensors on Shearwater, of those 2 are splitted to one rEvodream, second rEvodream reads 2 sensors(using 2 splitters)



6) How long can I use the scrubbers on a rEvo rebreather?

The recommendations we give for scrubber use are only valid when Sofnolime 797 is used.
As scrubber performance is depending on the water temperature, we give different recommendations for cold and warm water.
When we refer to a ‘cycle’, this means that only one canister (the one that was on the exhale lung) is refilled with fresh sofnolime797, and that canister is put in the lower position of the rebreather: on top of the oxygen sensors on the inhale lung.
So correct cycling is always done like this: remove the top canister (the one on the exhale lung, on top of the orifice and ADV), and empty that canister. Take the remaining canister out of the lower position, and put it in the top position, on the exhale lung. Refill the empty canister and put it in the lower position, on top of the oxygen sensors. ALWAYS MARK YOUR CANISTERS AND write DOWN IN WHAT POSITION THEY ARE PUT!


rEvo with standard axial scrubbers, using Sofnolime 797:
water temp >  4°C:  one cycle every 2 hours, or refilling both canisters after 3 hours
water temp >15°C:  one cycle every 3 hours, or refilling both canisters after 4.5 hours

rEvo with optional radial scrubbers, using Sofnolime 797:
water temp >  4°C:  one cycle every 3 hours, or refilling both canisters after 5 hours
water temp >15°C:  one cycle every 4.5 hours, or refilling both canisters after 7 hours

Geschiedenis van rEvo

Een passie voor duiken en een passie voor techniek hebben geleid naar de ontwikkeling van de rEvo. Na het gewone flesduiken bleek behoefte aan een ander duikapparaat wat resulteerde in de aankoop en ombouw van een Russische IDA-71. Toen dit ook niet echt voldeed, werd gestart met de bouw van een eigen apparaat. Na heel wat ontwikkeling en een Beta-serie, werd deze CCR in 2007 gecommercialiseerd onder de naam "revolution". Al snel kreeg deze de naam "rEvo". Ondertussen, na enkele jaren van verdere ontwikkeling en research, zijn we aan de rEvo III toe. rEvo-rebreather blijft echter voordurend verder ontwikkelen, op zoek naar nog betere prestaties en om nog beter aan de wensen van de rEvo-duikers te voldoen...

 

 

Nieuws:

Onze laatste nieuwtjes:

CE goedkeuring van de rEvo III !

rEvo Rebreathers is verheugd te kunnen melden dat de rEvo III voldoet aan de norm prEN14143:2009, en alsdusdanig het CE keurmerk mag dragen.

De prEN14143:2009 is het finale voorstel van de bevoegde technische commissie voor de opvolger van de EN14143:2003, en wordt verdeeld aan de nationaal bevoegde comités voor verificatie (wat betekent dat het vanaf dan kan gebruikt worden voor certificatie)

Deze nieuwe rebreather standaard geldt zowel voor de manueel gestuurde versie (mCCR), als voor de automatische versie (hCCR), en voor beide types (standaard en mini).

Vanaf heden is de rEvo III in CE versie dan ook verkrijgbaar op de Europese markt.

Deze CE goedkeuring is het resultaat van 2 jaar werken, testen, ontwikkelen en een aantal investeringen (rebreather testlabo), maar ook dankzij de feedback en de steun van onze rEvo klanten.

rEvo rebreathers blijft verder werken aan de ontwikkeling van de rEvo en aan de ondersteuning van haar klanten.

200+ meter duik !

rEvo +200m (*)  team dive panorama reef 5/12/2009

disclaimer: the maximum recommended diving depth of the rEvo is 40/80 or 100m, depending on the gasses/configuration. The dive discribed was done for testing purpose only!

On december 5, 2009, a team of 3 divers using rEvo rebreathers succesfully completed a dive to 211m at Panorama Reef. in the Egyptian Red Sea.Local support, gasses, tanks, boats, staff (in and out water) was supplied by Orca Dive Clubs.The dive was permitted by and had the support of the Egyptian Chamber of Diving and Watersports and had the support of Hypermed, the hyperbaric chamber of Hurghada.

The Team

Planning and organisation: Paul Raymaekers in cooperation with Orca Dive Club Safaga, Marc Crane.
Deep team: Paul Raymaekers (Belgium), Marco Reis (Brasil), Pim van der Horst (Netherlands)
Deep support team 1: Joël Gallien (France), Frank Robert (Belgium)
Deep support team 2: Wim Vermeire (Belgium), JP van Mele (Belgium)
Surface manager: Marc Crane (UK), assisted by Marc Thierens (Belgium), Achmed Salem (Egypt)
Shallow water support: Arnaud St Jean, Johnny Sanders, Tom Freibote, Stefan Weiss, Thierry Dedeurwaerder.
Deep photo team: Tobias Steger, Birga Weisert
Filming: Massimo Verde
Surface photos: Sebastien Micheloud (Zwitserland), Tobias Steger, and the whole crew on board
Hyperbaric chamber stand-by: Dr Hossam Nassef (Egypt)

Gear and gasses

Hybrid standard rEvo III in cmf mode (Paul)
Hybrid standard rEvo II in cmf mode (Marco)
mCCR mini rEvo III (Pim)
Inboard dil 5/75
Offboard dil 10/70
PPO2 adjustment by injecting rich dil 10/70 in the deepest part of the dive (200m-100m)
Bailout gasses  5/75  10/70  15/50   20/30  50   O2

Deep lights provided by Green Force.

Dive organisation

Planned depth 210m, bottom time 1 minute, run time 280 minutes.
Deco profile according to the Shearwater computers on the rEvo's.
Descent speed 20m/min, ascent speed from depth till first stop (95m) 20m/min.
Deep shot line from boat 1  +/- 50 m away from the reef, jump at 50m depth to shallow shot line from boat 2 near the reef to finish the dive.
Full deco station under boat 2 with all gasses at 12/9/6m
Deep divers carrying 80cft  5/75, 10/70 and 15/50 bail-out gasses, and one extra 40cft oxygen in case of loss of inboard oxygen.
Deep support divers carrying 80cft 15/50, 20/30 and 50%.
Shallow support divers bringing down 20/30 and 50% for the deep divers and taking off the deep mixes.

Paul and Marco using scooters to go down, Pim descending on the shot line. Parking scooters at the 180m mark (max scooter depht) and going to the end mark on the line. Ascending on the shotline till first stop, after recovering the scooters on the way up.

The Dive:

The entire dive went according to plan, except for a part of the ascent, where Pim switched over to open circuit gas as he felt unsure, probably due to overexertion during the descent in trying to keep up with the planned descent speed. After assessing the situation, Pim switched back to the rebreather.

The last 3 hours of the dive were spent on the nice reef of Panorama, near the support boat with the decostation. The deep divers, support divers and all together, enjoining the marine life and Marco filming ‘anemone city'.

The last diver left the water on runtime 294, and after 10 minutes surface deco the complete dive plan was finished.

(*) Twice the maximum depth recommended by the manufacturer in accordance  with CE protocol

Beurzen

rEvo zal aanwezig zijn op volgende beurzen:

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Links

Duik verder in onze wereld:

Shearwater Research

Shearwater Research ontwerpt en vervaardigt computers voor technische duikers.

Duikshop The Big Blue

Duikshop the Big Blue is erkend verdeler van tal van bekende merken en staat garant voor topkwaliteit tegen de beste prijs.

forum Rebreatherworld

De volgende stap in Scuba Diving...

Contact & Bestellen

De rEvo rebreather kan vanaf heden of via een instructeur of bij rEvo aangekocht worden. We bevelen aan om via een instructeur te werken. U kan daarvoor de lijst bij de rubriek instructeurs raadplegen. Bij deze instructeurs kan u ook terecht voor informatie omtrent de rEvo rebreathers. Voor nog meer technische ondersteuning kan u met uw vragen terecht bij rEvo zelf.

Contact: info@revo-rebreathers.com

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