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There is no need to tighten the locking sleeve more than finger-tight.
Reverse the process to remove the PAR sensor if you wish to make calibration easier, or for cleaning, or for storage if you
want extra protection for the PAR sensor. Simply unscrew the locking sleeve, pull the sensor away from the multiprobe,
re-install the dummy plug, and re-install the locking sleeve. The dummy plug seals the PAR port, so you can submerge the
multiprobe without the PAR sensor attached.
The PAR sensor is made of acrylic plastic for optical reasons. Acrylic is somewhat brittle, so don’t step on the sensor. It’s
also rather soft, so clean the sensor only with soapy water and a soft, wet cloth.
A copy of LI-COR’s PAR instruction manual is included with the PAR sensor; it’s well-done and worth reading.
4.18 Set barometric pressure and set time and date
Your Scuba needs to know the local Barometric Pressure (BP) if you have a Clark or optical dissolved oxygen sensor, so
click on the
Set Barometric Pressure
button (it’s in the Calibrate menu). You can set the BP by typing the correct value (in
mm Hg) in the first box of the Set BP screen (below, left). Or, you can set the approximate BP by typing your altitude (in
feet) in the second box. Notice that if you type in BP, altitude is automatically calculated, and vice-versa. The third
method for setting BP is asking your Scuba the value (if your Scuba is equipped with an un-vented depth sensor). If you
choose this method, remove the calibration cup from the Scuba and make sure the depth sensor is exposed to air. The
correct values will automatically appear in the BP and altitude boxes.
Click on the
Set Date and Time
button to see the Scuba’s opinion on time and date. If you wish to change any of those
values, just type the new value in the appropriate box or click the box at the bottom of the screen (above, right) to
synchronize the Scuba time and date with that of the device you’re using to read the Scuba, i.e. your PC or Amphibian.
