Dear all,
I got a issue with the SM331 Ai module. It happen after additional devices sensor - 2 wire (4-20mA).
i measured across device with digital meter , reading was 6-8mA,shown ok. But once i series connect to AI ch 1 or other ch, meter read 55mA and overflow detected. NO SF error light. Any one experience with such senario? issue with the AI module ? Sensor output?
i also tried mA ISOlator between AI and sensor-but "zero"value read at meter with same series connection.
Additional info:
Ch0-Ch3 set as D (4 wire-mA)
Ch4-Ch7 set as C (2 wire-mA)
External FLUKE injector into AI module, read prefectly
thank you
alex
I got a issue with the SM331 Ai module. It happen after additional devices sensor - 2 wire (4-20mA).
i measured across device with digital meter , reading was 6-8mA,shown ok. But once i series connect to AI ch 1 or other ch, meter read 55mA and overflow detected. NO SF error light. Any one experience with such senario? issue with the AI module ? Sensor output?
i also tried mA ISOlator between AI and sensor-but "zero"value read at meter with same series connection.
Additional info:
Ch0-Ch3 set as D (4 wire-mA)
Ch4-Ch7 set as C (2 wire-mA)
External FLUKE injector into AI module, read prefectly
thank you
alex
