Campbell OBS-3A Manuel télécharger pdf (Page 25)

OBS-3A Turbidity and Temperature Monitoring System

Barometric Correction

The OBS-3A measures absolute pressure so a correction must be made for

barometric pressure. Press the Run Correction button to run a barometric

pressure correction.

Be sure to do this while the OBS-3A is at the surface. Doing so

when the instrument is submerged will result in large errors in

the depth measurement.

NOTE

Change to RS-485

To switch from RS-232 communication to RS-485 communication, press the

RS-485 button and install the RS-485 converter.

Once the button is pressed, you will no longer be able to

communicate via RS-232. However, if you accidently push this

button, the OBS-3A can be reset by removing and reinserting the

batteries.

NOTE

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Campbell OBS-3A Manuel Page 25