Lab 2: Cell thermal mass#
Objective#
Document the effect of cell thermal mass on a salinity measurement
In groups, follow the exercise sheet for ideas about how to set up your experiment.
Tip
Divide tasks within the group for efficiency, but ensure everyone understands the whole process.
Suggestion#
Clarify for yourself what the cell thermal mass problem is and how it manifests in data.
Gather datasheets, manual for SBE37 and for Seabird processing software. Note the instrument details - what are the allowable ranges?
Plan to install necessary software or use lab computer for downloading data from the instrument.
Tip
We can provide advice. If in doubt, ask before trying something.
Some ideas to get you started#
You will need to change the temperature of the conductivity cell of the microCAT. What are the allowable temperature ranges? You may use ice.
You will want to make several repeat measurements, and consider using water with different salinities /temperatures, but not too many! Ensure your salinities (which you will create) are within the allowable ranges of the instrument.
If using a pumped microCAT, do not run the pump dry (i.e., don‘t run it in air). It should be submerged while running. Consider an extra bucket of water to protect the instrument between setup and starting the experiment.
Warning
Human safety first. Equipment safety second.
What’s due?#
Document outlining the experimental design, and
Report with conclusions after the experiment was carried out
Recommended: Gitlab repository.
See the assignment details for length, content and deadlines on the course website.