Archive for the ‘Equipment’ Category

Have a look inside the rEvo rebreather

zaterdag, december 18th, 2010

With two other IANTD rEvo instructors we had a two day technical training at the rEvo rebreather factory in Bruges, Belgium. We witnessed the assembly of a complete unit, did a 120 point checklist, before packing for shipment to the client.

Contact us for any questions regarding the rEvo, or have a look at our rEvo training page.

OSTC computers: cool & quality

vrijdag, december 10th, 2010


23.05.2011 update : Nu is er de nieuwe OSTC 2N die de MkII vervangt.

Download de OSTC Mk.2 Manual

OSTC DR5 met USB Kabel en Lader: 1550€
Als je het beste wil! Kijk naar het indrukwekkende datasheet. De DR5 is gemaakt uit één blok geanodiseerd aluminium, met een gemiddelde wanddikte van 6mm. Het OLed scherm zit achter 9mm dik krasvrij boorsilicaatglas. Max Depth … 350-500m.
Download DR5 Datasheet


Ik gebruik zelf met de rEvo rebreather de Shearwater, die er aan verbonden is. Door de OSTC als tweede computer te gebruiken heb ik volledige redundancy, ook voor de Software! Beide computers werken met een Gradient Factors, zijn erg betrouwbaar, van hoge kwaliteit, en laten me alles toe tot deep trimix.

ThinkBlue Technical – Sven De Vos

Blender Opleiding: 28 oktober

maandag, september 27th, 2010

IANTD EANx blender opleiding In Nederland, DiveVersity, De Kempervennen.
IANTD Blender - Click for more info
Indien interesse geef een seintje!

rEvo Rebreather Gasblock

woensdag, september 8th, 2010

rEvo rebreather gasblockHaving completed the rEvo rebreather instructor training, I couldn’t resist congratulating myself by equipping my rEvo with a triple dil-oxy-dil offboard block (as they call it in the factory) or a clarinet (as we nickname it).

As you see on the pictures, it integrates well with the unit without compromising the free chest area – this was a primary consideration to me.

The gas block, made out of a solid block of Delrin, has a sound operational feeling. The recessed O2 injection makes it easy to get to the right button, making mistakes by pushing the wrong button fairly unlikely.

Inboard O2 and DIL injection
Although I feel that the usual manual injection buttons on the back are easy to operate, even with several bailout tanks, the manual addition of O2 and DIL by the gas block, with one hand at the front, is really convenient. The injection comes with an easily controlled flow and allows for good pO2 management. The flow rate is comparable to the output of the manual injection in the back: inboard DIL ± 200 L/min at surface, inboard O2 ±- 120 L/min at surface, offboard DIL ± 170L/min at surface.

rEvo rebreather gasblock
Offboard gas injection
The possibility of being able to inject offboard gas (ie. gas from a cylinder you or your team carries) was my main reason to get a clarinet. The offboard gas is connected to the gas block by a standard MP hose (like for the BCD). It offers more possibilities to stay on your rebreather in case of loss of inboard DIL or O2.
Also, specific to the hybrid rEvo, you could plug in a hybrid unit (with open orifice and constant MP oxygen regulator) a small tank with oxygen and a variable MP reg. This allows for manual O2 injection by the gas block in the deeper part of the dive (from 80m), where the orifice and the inboard injection (on the constant pressure regulator) would no longer work. In the shallower part however (<80m), you continue having the advantages of the orifice.

Paul advises to flush the gas block after diving by diluent flushing pushing both the diluent and the offboard gas injectors.

Of course the gas block is also an extra possible failure point. A malfunctioning injector could bleed gas in the loop, or one of the connections could leak. I feel that this risk is acceptable and that it can be countered by good awareness and proper training.

I hope this review was helpful to those considering a gas block, and I welcome your opinion or experiences here below.

ThinkBlue Technical – Sven De Vos