The EMC-20H is the simplest of dive computers to use and understand, even for beginning divers. It is ready-to-use straight out of the box. Merely understand the large easy-to-read display and audible warnings.
The intelligence built into the EMC-20H manages everything else. It automatically, seamlessly, and constantly adapts to your personal diving style, water temperature, salt/fresh water, ascent rates, and altitude . It even has a built in 'Flight Data Recorder' that records changes in altitude during your flight to and from the dive destination. (Eighteen percent of the DCI incidences occurred during or immediately after a Post-dive change of altitude.)
Multi-blend configuration features Cochran's patented gas blend switching.
| Available configured for: | ||
| Air Only | ||
One Mix Nitrox - 1 FO2 |
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Two Mix Nitrox - 2 FO2 |
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| One Mix Nitrox Switchable to One PO2 - 1 FO2 / 1 PO2 | ||
| Two Mix Nitrox Switchable to Two PO2 - 2 FO2 / 2 PO2 | ||
One Mix Nitrox + Helium (One Mix Trimix or Heliox) - 1 FO2 + He |
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Three Mix Nitrox + Helium (Three Mix Trimix or Heliox ) - 3 FO2 + He |
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One Mix Nitrox + Helium (One Mix Trimix or Heliox) Switchable to One PO2 + Helium (Trimix Diluent) - 1 FO2 / 1 PO2 + He |
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| Three Mix Nitrox + Helium (Three Mix Trimix or Heliox) Switchable to Two PO2 + Helium (Trimix Diluent) - 3 FO2 / 2 PO2 + He | ||
| Choice of Wrist Unit Mounting Options | ||
| Module Only | Hose Mount | |
| Wrist Mount - Standard | Twin Console | |
| Retractor | Triple Console | |
| Retractor with Compass | ||
| Choice of Standard Red Backlight or Optional Yellow | ||
| Choice of Wrist Unit Case Color: | ||
| Navy Seal Black - Standard | Bright Sky Blue | |
| Deep Sea Blue | Nitrox Green | |
| Battleship Gray | Sunshine Yellow | |
| Titanium Color | ||
| Choice of Dive Profile Memory (at One-Second Sampling): | ||
| 180 Dive Hours - Standard | ||
| 360 Dive Hours | ||
| 725 Dive Hours | ||
| 1450 Dive Hours | ||
| Interdive Profiling (Records Events Between Dives such as Altitude Changes) | ||
| Uses N Size Alkaline Batteries (User Changeable) | ||
| Battery Life is Over 1000 Dive Hours (Depending on Taclite Usage) | ||
| Extended Range 20 Compartment Algorithm | ||
| Maximum Depth Over 410 feet | ||
| Decompression Ceilings to 410 feet | ||
| No Lock Out | ||
| Real Time NDC and Deco Times Based on Breathing Mix Currently Being Used | ||
| Real Time CNS and OTU Oxygen Toxicity Calculations | ||
| Decompression Times and Ceilings Based on FO2 of All Mixes | ||
| Decompression Times Account for Ascent Rate | ||
| Automatic Altitude Acclimatization up to 16,000 Feet | ||
Environmental Compensation for: |
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| Water Temperature | ||
| Altitude | ||
| Microbubbles | ||
| User Added Conservatism | ||
| Previous Dive Profiles | ||
| Salt Water / Fresh Water | ||
| Predive Airplane Flights | ||
| Postdive Airplane Flights | ||
| Work Load | ||
| No Hands Gas Blend Switching | ||
EMC-20H Feature Selection Guide
The EMC-20H is designed to grow with the diver as his/her diving experience progresses the EMC-20H's can be enhanced to keep step with the progress. The "upgrade-ability" prevents the diver from buying "too much" or "too little" dive computer. By answering the following questions the diver can make an informed decision as to which configuration of the EMC-20H is right for them.
- Do you dive Nitrox?
If NO, the Air only configuration is for you.
If NO, but I plan to get certified shortly. Then the single-gas FO2 should be considered.
If YES, go to the next question. - Do you Dive more than one Nitrox mixes per dive?
If NO, Only one, Then the single-gas FO2 should be your choice.
If YES, then the 2-FO2 configuration is for you. - Can the EMC-20H be used with my semi-closed circuit rebreather?
Yes, semi-closed circuit rebreathers use a constant FO2 Nitrox blend, again if you only dive one mix per dive, the single gas-FO2 configuration is for you. - Do you dive a closed circuit rebreather?
If NO, there is no need to consider a EMC-20H with the Constant PO2 feature.
If YES, go to the next question - How many PO2s do you use per dive?
If only one then the One-FO2 / One-PO2 configuration will fill the bill. If your CCR unit can handle two different PO2s per dive then you will need the Two-FO2 /Two-PO2 version. - Do you dive a Open-Ciruit Heliox or Trimix?
If NO, there is no need to consider a EMC-20H with Helium PO2 feature.
If YES, go to the next question - How many different Gas Blends do you use per dive?
If only one then the One-FO2 with Helium should be your choice.
If two or more then you will need the Three-FO2 /Two-PO2 with Helium version. - Do you dive a closed circuit rebreather with Heliox or Trimix Diluent?
If NO, there is no need to consider a EMC-20H with the Constant PO2 feature and Helium.
If YES, go to the next question - How many PO2s with do you use per dive?
If only one then the One-FO2 / One-PO2 with Helium configuration will fill the bill. If your CCR unit can handle two different PO2s per dive then you will need the Three-FO2 /Two-PO2 version. - Does color make a difference?
The color of the Wrist Unit is strictly a matter of diver preference. - Which mounting method is right for you?
Again as with color, it is a matter of diver preference.
If your a "reach under the rocks and in hole" type you will probably not want a wrist mounted unit.
If you like a redundant SPG, you may want the Hose Mount version.
If keeping thinks streamlined is your aim, then one of the Retractor mounted versions need consideration. - Why offer two colors of Backlight?
Individuals with red-light night-vision problems have the option of having the unit equipped with a Yellow Backlight. - How much memory do I need?
While the EMC-20H has the capability of storing dive profiles for a maximum of 550 dive hours. Some divers who regularly use our Analyst® PC software may not want as much.
However, there is a certain comfort knowing that your dive computer is retaining ALL of your dives