Dear Sir,

I just bought an DT80M unit. For the beginning I want to use channel 1 only and connect 3 independent analyzers (O2, CO2, and CO gas analyzers) that have each one the analog output of 0-1V.
Questions

• there is possibility to connect all three to channel 1?
• from the manual it seems possible to wire 3 analog (voltage) output to one channel but how exactly will look the diagram being very specific with the polarity of the analog signal for each analyzer (I have 3 pairs of wire)?

Thank you
Tibbie

I solved the problem. Somewhere in the DT80 manual it shows clearly how to connect three voltage signals to one channels. Must use ''#'' as a common negative and the rest of three positive go to ''-'', ''+'', and '' * ''. So, it was a little confusing due the polarity connections, but the instruction were clear, and when I tested was working great.

Tibbie

Hi Tibbie,

I am glad you finally found out about shared wiring.

Shared wiring configuration could be used to read three sensors within one terminal.
With # pin as common, each pair of wire will take place */# (1st analyzer); +/# (2nd analyzer) and -/# (3rd analyzer)

Notes:
I have removed this thread duplicate

Best regards,
Rudy Gunawan