When dialing up the 21X, the barometric pressure data is displayed in real time. When the data is collected via either dial-up or a storage module, the barometric data are all zeros. Why does this happen?

It may be that there is no output flag set to dump data to final storage. It is possible that access is not being made to the right input location of the barometric pressure sensor to send it to final storage. To set an output flag, refer to the "Program Control Instructions" section in the 21X Micrologger Operator's Manual.

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