Hollis Prism 2

$7,649.96

The Prism 2 is a fully closed circuit Rebreather, ideal for exploring open ocean, cave, or wrecks. This unit can be electronically or manually controlled which means you choose how you want the loop PPO2 maintained.

 

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SKU: 240.6520.000 Categories: , ,
 

Product Description

Includes shoulder mounted counter lungs and rear mounted radial scrubber which provide easy breathing with low resistive effort and low hydrostatic loading. The Prism 2 has also been tested by ANSTI at 100M and has the lowest WOB of any mixed gas CCR on the market at 0.94 J/L.

The standard kit includes an electronic secondary control and primary LED displays with a backplate/wing assembly that provides a complete kit ready to dive out of the box. Unit can also be purchased with or without tanks/valves.

The PRISM 2 is an electronically or manually controlled, constant PO2, modular, closed circuit diving system.

As open circuit (SCUBA) divers we rely upon filling our lungs with air from a pressurized gas tank with every inhalation and then exhausting that volume of air into the surrounding water with every exhalation. As we descend deeper the water pressure around us increases and the volume required to fill our lungs increases; in other words, our air supply depletes more quickly the deeper we dive.

A rebreather recycles rather than vents the exhaled breath. The exhaled breath passes into a closed loop, where it is pushed through a chemical absorbent (scrubber) to remove the carbon dioxide, and returns through the other side of the loop for the diver to re-breathe, hence the name “closed circuit rebreather” or CCR.

Breathing Loop

It’s breathing loop which is a keyed one way assembly consists of a closable mouthpiece assembly with mushroom/check valves either side, which ensure uni-directional flow.

Independent 3rd party testing has also rated the Prism 2 the lowest work of breathing of any mixed gas rebreather available today at 0.94J/L. Click here for actual test reports: ANSTI_Prism2WOB_review.pdf

Status check

With the electronics switched on, the secondary also provides a status check for the battery and displays the set point selected for the dive along with other critical information. The electronics vote between the three proprietary galvanic sensors and control the operation of a low wattage solenoid valve on the oxygen supply.

Scrubber design

A radial flow scrubber canister is mounted vertically on a backplate attached to the integrated BC, between twin supply cylinders (one each, oxygen and diluent).

Electronics

The electronics, sensors and batteries are mounted in the electronics head assembly at the top of the scrubber, with supply hoses feeding over the diver’s shoulders into the top of the counterlungs. An analog LED primary display offers a quick reference of unit performance with status and alarm indicators while an independent digital OLED secondary display verifies the unit’s performance.

Counter lungs

Dual, front mounted counterlungs provide the diver with a flexible reservoir equivalent to the maximum displacement of the diver’s own lung volume and ensures the lowest possible hydrostatic loading.

These counterlungs are fitted with both automatic and manual gas addition systems and a variable volume control valve (used upon ascent to vent excess expanding gas volume or to purge the loop). Diluent addition is automatically achieved as hydrostatic pressure increases and the counter lung collapses against the valve

Length 21in (53.3 cm)
Width 17 in (43.2 cm)
Depth 9 in (22.9 cm)
Buoyancy neutral
weight approx. 47 lbs (fully charged) with 19 cuft tanks
Scrubber Flow Design Radial
alternate inflator bail out yes (Hollis 310)
counter lungs Over the shoulder
PO2 set points adjustable (0.7, 1.0, 1.2, 1.3, 1.4)
O2 sensors 3 galvanic
Sensor life 12 months in air or 100 hours dive time
Heads Down Display Yes, battery powered sequential LED
Analog PO2 display (Secondary) Yes, powered by O 2 sensors
battery type 9 volt
battery life 40 hrs
automatic setpoint switch Yes @ 20 ft (6.1m) on Descending, 18 ft (5.5 m) on ascent
integrated weight system yes
Diluent bottle sizes compatible 13’s, 19’s; 30’s (cuft)

1.9, 2.7; 4.4(liters)

O2 bottle sizes compatible 13’s, 19’s; 30’s(cuft)

1.9, 2.7; 4.4(liters)

scrubber duration 245 min @(60 fsw, 40F, 1.3L/min CO 2,0.5%CO 2 SEV)

Free Shipping Terms and Conditions:

  • Applies to orders greater than $50.00 on selected items. (Does not apply to tanks or weights)
  • Applies to UPS GROUND shipping rates only, within the Continental United States. Expedited shipping requests will be charged at applicable shipping rates.
  • Available only to the Continental United States.
  • Refunds for shipping on any returned items will be deducted by the amount charged for the non free shipped items only on the original order.
  • Valid with gift certificates & promotions.
  • We reserve the right to modify or cancel free shipping at any time.

Full Return Policy For Saguaro Products

New Product Returns: Save your receipt. Your purchase can be returned within 90 days for a hassle-free exchange or refund provided that the merchandise is in its original saleable condition, original packaging and it is returned with its original receipt. Returns without the original receipt will be made at Saguaro Scuba Inc. discretion. Specific details and exceptions are as follows:

Regular Stock Product Returns: Regular stock products can be returned within 90 days of purchase to Saguaro Scuba Inc. There is no restocking charge when returning regularly stocked merchandise.

Special Order Product Returns: Special order products can only be returned to the store within the time limit originally specified. Some special order products may have a restocking charge or may be non-returnable. In these cases we will inform you prior to ordering and we will note any special rules or restocking fees directly on your receipt.

Non-returnable Products: Computers, Electronics & Cameras are returnable only if they have not been installed or used and if they are in new original saleable condition and packaging. Clearance items are non-returnable.

Warranty Product Returns: Your purchase can be returned for a hassle-free replacement/repair provided that it is returned within the warranty terms and warranty period. The original receipt is required. Warranty returns without the original receipt will be made at Saguaro Scuba’s discretion. Products with a replacement warranty will be exchanged free of charge. Products with a repair only warranty will be repaired in accordance with the manufacturer’s or Saguaro Scuba Inc. terms and conditions. Warranty claims are limited to replacement/repair of the product only. We do not cover additional costs such as labor, incidental or consequential damages.

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