Juergensen
Marine
Actual Size
The
Juergensen Marine Heads Up Display!
(CONTINUED)
CALIBRATION
To calibrate the HUD unit, simple turn the unit
on, then flood your loop with 100% Oxygen. You can do this either in your loop,
or separately in a plastic bag. Be sure to use the SAME Oxygen Sensor(s) you
will actually be diving with to calibrate your loop!
Once you have flooded your loop, and are reasonably
sure that the sensors are now stabilized in 100% Oxygen (or as close to it as
you can get), simply depress the Push Button. The LED will begin to flash Red/Green/Red/Green
for about a second or two, letting you know that calibration is in progress.
After that, the LED should glow Orange for each sensor. If not, you need to
verify your connections to the sensor(s).
While it is not necessary to re-calibrate after
every dive, we encourage you to calibrate often. The response of Oxygen sensors
can vary greatly from day to day and dive to dive, and it is always best to
have your calibration as current as possible.
GENERAL MAINTENANCE
There is really nothing you should have to do
to maintain your HUD unit, with the exception of making sure that all the components
are protected from any contact with water. It bears repeating that water, especially
salt water is the enemy of anything electronic. One drop of water can destroy
your HUD beyond repair, and endanger your life.
FINALLY
It should go without saying in any kind of technical
diving that you proceed at your own risk, should you choose to utilize any kind
of Oxygen Monitoring Device. These things are not perfect, nor are they infallible.
Nothing should replace your own good sense in diving any form of scuba equipment.
When used properly, this HUD can be a wonderful way to verify your ppO2 while
diving, but if you do not exercise common sense, you can die using this unit
or any other for that matter. There are two things that you must absolutely
know without the use of any device underwater, your Fraction of Oxygen in your
breathing gas, and your Depth. If you are using a semi-closed system, you will
also need to know your flow rate and personal metabolism. There is NO substitution
for this knowledge. Every time you go underwater with any device, be it mechanical
or electrical, you are betting your life that it will work, or that your personal
skills as a diver are sufficient to save you in the event that they do not.
Be safe - make sure you are properly trained for the equipment you will be diving,
carry backup, and verify, verify, verify the operation of any electronic device
you may use to monitor your Oxygen content.
OKAY,
OKAY, I JUST GOTTA HAVE ONE OF THESE NOW!!!
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