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Depth Sensor
The Pro 4 depth gauge is calibrated at the factory and in general does not need calibration. The Pro 4 will
automatically zero the depth on start up as long as the pressure is below an internally defined threshold. This will
allow the system to take into account differences in barometric pressures from one project to the next. The
system will not zero the depth on start up if the pressure is above the threshold. This will allow you to turn the
system off and then back on while the ROV is submerged without affecting the depth reading.
Depth Calibration
If you want to manually zero the depth, you can do so by clicking on the "Use current pressure" button.
On the right hand side, you can adjust the calibration to account for the density of the fluid in which you are
operating the ROV. There are quick preset buttons for Fresh or Salt Water, and there is a pull down list with more
quick preset fluid types. You can also enter the density directly if it is known.
In the upper right hand corner of the Depth Sensor section, there is a button to access the Depth Sensor
Advanced Settings.
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