On site we have Yokogawa EJA110E differential pressure transmitter connected to process air line. I'm not sure if this can be used to measure air flow... I already told client it can't, now I see it's possible to generate flow from delta pressure, so I've possibly made a fool of myself today.
First I received overrange from instrument (30000+ in my input word in Siemens PLC), then I went down to check what's wrong. Now it's not sending anything, could be because nothing is inside the pipes yet (I mean, there's no air flow).
I presume I could read delta p and use Bernoulli to do some math or is not possible at all?
Air is supposed to flow in only one direction.
First I received overrange from instrument (30000+ in my input word in Siemens PLC), then I went down to check what's wrong. Now it's not sending anything, could be because nothing is inside the pipes yet (I mean, there's no air flow).
I presume I could read delta p and use Bernoulli to do some math or is not possible at all?
Air is supposed to flow in only one direction.