Table 3 Differences of operational method between J-Calibration and SBE-Calibration

Artificial seawater

Flowing directly from the tank to sensors through tubes

Filling water in a big tank, put sensors into filling water.

Amount of seawater per one experiment

10 L

230 L

Maintaining seawater temperature

Spot insulation of sensors and a part of tubes with insulating material and housing.

Tank surrounded by adiabatic material, controlling water automatically with a tiller.

Removing CTD unit

Not necessary.

Necessary with special skills.

Controlling system

Sending command to sensors and standard sensor by laptop computers.

Using a special computer unit manufactured by SBE.