divemaster requirements - requisitos para ser divemaster - 3
Personal and Technical Divemaster Requirements
May 19, 2021
world ocean's day 2021
Detox the oceans, detox your legacy.  World Oceans Day 2021
May 27, 2021
Show all

How To Choose Your Dive Computer And Make no Mistake

dive computer - ordenador de buceo (2)

A good dive computer is life insurance for a scuba lover. We don’t know if you’ve ever used a decompression table after getting your Open Water certification, although you should. What we do know is that dive computers have managed to make recreational divers practically forget them. Already, computers automatically calculate how long we have left under water or how long a decompression stop should last and how deep to do it.

However, despite being extremely useful, we often find divers who do not carry a dive computer. It happens even when they have booked double tanks every day in a row for a week. They trust the dive computer of the dive buddy or the divemaster. But what happens if there is an unforeseen event and you find yourself far away from your guide or worse, alone?  Others rely on renting one at the dive center, assuming that option is available, although not all have them. So, it is better to have your own dive computer.

dive computer - ordenador de buceo (1)

How Do Dive Computers Work?

A dive computer measures the pressure at the beginning of the dive and the nitrogen saturation of your body. Then, as the dive happens, it measures the time and pressure and obtains data on the percentage of nitrogen absorbed by your body. It also calculates the percentage of safe release of the gas according to the maximum rate of climb. Finally, the computer calculates the amount of nitrogen left in your body and deduces the minimum length of the surface interval between dives.

In other words, a dive computer takes into account: time, depth, the air mixture used, the temperature of the water, the number of dives, and the surface interval between them, but it will also take you into account. In other words, a dive computer monitors a person’s underwater activity under specific conditions. As well, as it records the dives, we could say that the computer learns and the more you use it the more it provides more accurate data.

Okay, yes.  A dive computer is not foolproof. It does not know some parameters, which affect decompression: your weight, your stress level, if you have slept well, your hydration level, or your physical condition, but it does know how you dive and where you dive.

Advantages of Having Your Dive Computer

You will practice safer diving. You will know exactly your underwater time limit without decompression stops, you will never go down deeper than you should and you will have more controlled ascents

You will be able to do longer dives than using the decompression table calculations. We already know that the tables calculate the entire dive at maximum depth, however, the computer takes into account the differences in depth.

You will have an exact dive log. In addition, many of them can be connected to your computer to download the data for you.

There are basically 3 types of dive computers:

  • The wrist ones, easy to monitor by less experienced divers
  • Console dive computers, which are usually integrated with the pressure gauge and have a larger display than the others.
  • The computers integrated into the mask, much less frequent, but that allows the diver to see the data just by looking down.

Basic Characteristics That a Good Dive Computer Must Have

Readability. It is no use having the best dive computer in the world if you can’t read it. So, make sure that the numbers have a good size, that the screen offers a defined contrast between the numbers and the background and if possible, that the screen is backlit, in order that you will see better.

Also, take care about understanding how the computer presents information. A number doesn’t mean anything if you don’t know what it´s telling you.

Easy to use. Read the reviews of other divers on the ease to set up the dive computer. In the middle of the “plug and play” era, a computer with a steep learning curve is not useful.

Another thing, do you wear gloves when you dive? Well, keep that in mind when choosing your dive computer. Look for one with large, well-spaced buttons.

Features. Choose a dive computer that is suitable for the type of diving you’ll practice. Air mode is the most common, but you may be going to dive with Nitrox, make sure it offers that option. Technical divers use Trimix and freedivers also need a dive computer to suit them.

On the other hand, make sure that the dive computer has the measurement options that you really need, there is no need to buy a high-end computer if you are not going to take advantage of it. Professional divers have far more needs than someone who has only been in the sport for a short time.

Regarding features:

– some have a built-in compass,

– others have audible and visual alarms or only one of the two options,

– most dive computers can be connected to a computer to transfer data, but some cannot;

– many, you can change the battery yourself, in others, you have to take the dive computer to the shop to change it.

Take a look at these aspects to make the best choice for your dive computer.

dive computer - ordenador de buceo (3)
dive computer - ordenador de buceo (3)

Easy to use. Read the reviews of other divers on the ease to set up the dive computer. In the middle of the “plug and play” era, a computer with a steep learning curve is not useful.

Another thing, do you wear gloves when you dive? Well, keep that in mind when choosing your dive computer. Look for one with large, well-spaced buttons.

Features. Choose a dive computer that is suitable for the type of diving you’ll practice. Air mode is the most common, but you may be going to dive with Nitrox, make sure it offers that option. Technical divers use Trimix and freedivers also need a dive computer to suit them.

On the other hand, make sure that the dive computer has the measurement options that you really need, there is no need to buy a high-end computer if you are not going to take advantage of it. Professional divers have far more needs than someone who has only been in the sport for a short time.

Regarding features:

– some have a built-in compass,

– others have audible and visual alarms or only one of the two options,

– most dive computers can be connected to a computer to transfer data, but some cannot;

– many, you can change the battery yourself, in others, you have to take the dive computer to the shop to change it.

Take a look at these aspects to make the best choice for your dive computer.

Leave a Reply

Your email address will not be published. Required fields are marked *