Gas Tension Device
Gas Tension Device (GTD) instruments measure gas tension, or total dissolved gas pressure. The total dissolved gas pressure in seawater is the sum of the partial pressures of all dissolved gases. The GTD operates by equilibrating a small volume of air trapped behind a semi-permeable membrane that is resistant to seawater. When the air sample is isolated from hydrostatic pressure, the measured pressure is solely from the gases in the seawater. This internal pressure is measured using a very stable pressure sensor.
Individual instruments of the above category, which are (or have been) connected to our observatories. Click an instrument for detailed information.
|Pro-Oceanus GTD 24-36-07||Marine Technology Centre|
|Pro-Oceanus GTD Pro 24-036-08||Marine Technology Centre|
|Pro-Oceanus GTD Pro 36-326-06||Saanich Inlet Central Node|
|Pro-Oceanus GTD Pro 38-502-15||Marine Technology Centre|
|Pro-Oceanus Hurricane GTD 2807742||Expedition - Field Maintenance|
Click the instrument categories below for descriptions and lists of instruments belonging to that category.