There are three output of the BCM, marked as "FS 20uA 63uA 200uA". I don't know what it is mean, probably "full scale". Last Moller measurements (log# 316004) we have used the output of the BCM that labeled as "200uA".
Now we have reconnected the input of the VtoF "Dx10" module(#26) to output of the BCM that labeled as "20uA".
Another notes, we have to split this output from the BCM using "T" connector. I'm not sure that it is right way we have to do.