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The Tracker is a portable Total Gas Pressure (TGP) meter, also known as a saturometer or a tensionometer. It provides measurements for TGP (mmHg or % saturation), delta P (TGP-BP), as well as barometric pressure (BP) (mmHg), and temperature (°C).
Increasing water temperatures, injection of air in turbid water, algal blooms, or pressurized pumping can result in gas supersaturation. This may lead to gas bubble trauma or sub-lethal toxicological problems for aquatic species.
The Tracker has simple calibration procedures and features a tough membrane keypad and graphical display with a user-selectable backlight. The batteries are rechargeable and an AC adapter is included with each unit.
For technical details see the Specifications page.

- Easy-to-read display – allows for ease of reading in all conditions
- Easy to use – user configurable with intuitive menu system
- Rechargeable batteries – low battery indicator with AC adaptor and optional car lighter adaptor
- Datalogging capabilities – data transfer software and USB or RS232 adaptors are optional, allowing for direct download onto a laptop or other PC
- Full 1 year warranty – covering defective materials and workmanship
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