User Manual for AML Oceanographic BaseX2
5
Using the Instrument
Pressure Ratings
Pressure ratings are given for Xchange™ sensors and the entire instrument. Deployments
should never exceed the lower of these two pressure ratings. For example, a 500m
instrument equipped with a 6000 dBar (0-6000m) P•Xchange™ sensor is limited to deployments
of 500m depth or less. Similarly, a 6000m instrument equipped with a 500 dBar (0-500m)
P•Xchange™ sensor is also limited to deployments of 500m depth or less.
It is desirable to optimize the accuracy of pressure measurements by using a P•Xchange™
sensor with a pressure range that closely matches the depth of the deployment.
Base•X2 is available in two different pressure ratings: 100 meter or 500 meter. The depth rating
is dependent on the instrument housing selected at time of purchase. Refer to the instrument’s
decal or engraving on the top (adjacent to the shackle) to verify the pressure rating.
Pre-Deployment Procedures
• Upon Receipt
o Use the Shipping and Receiving instructions to verify the condition of the
instrument.
o Verify that all sensor calibrations are valid for the duration of the deployment. If
not, swap the Xchange™ sensors for sensors with valid calibrations or send the
Xchange™ sensors to a service centre for recalibration.
o Lightly lubricate the underwater connectors with 3M silicone spray or equivalent.
• Before leaving the jetty
o If applicable, verify the P•Xchange pressure range is correct for the deployment.
o Connect the instrument to a computer using WiFi.
o Check the instrument memory.
▪ Save any unsaved memory files.
▪ Initialize the memory (Note: This deletes ALL files stored in the
instrument memory. Be sure to have a copy of all important logged data
before performing this step.).
• If using SeaCast, click the Clear Memory box.
• If using a Terminal Emulator, send instrument an INIT
command.
o If using a Terminal Emulator, the instrument will need
to be connected to the computer via the Data/Power
Cable using serial communications.
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