Jungletron Posted November 3, 2020 Report Share Posted November 3, 2020 Hi, I was hoping to use URA-0800O (AI08O) or URA-0400O (AI04O) to get the 4-20 mA signals from Hanna transmitter (EC and pH). From the Hanna transmitter manual HI 98143-20 is 4-20 mA passive and HI 98143-22 is 4-20 mA active and in the last page: Questions: 1 - Is the HI 98143-22 compatible with Unitronics sink type analog inputs ? (and the HI 98143-20 not compatible ? ) 2 - Is the 2 Input Common(AGND) to 4 Input Common(AGND) difference between the URA-0800O (AI08O) and URA-0400O (AI04O) relevant for this choice? Already found info in the forum about double sinking and I really do not want to mess this ... Thanks for any help in advance! JT Quote Link to comment Share on other sites More sharing options...
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