Hi everyone this is my first post here. I have been reading a lot of the posts here regarding totalizing using pulses, however not exactly what I am trying to do. So here it goes. I am working with a flow monitor (Blancett B2800) with a pulse output, 20 ms on state max pulse rate 20 Hz. The monitor sends a pulse every 100 gallons. I need to get the GPM. Processor is Micrologix 1400, using the HSC to read pulses. This might sound easy but my requirements are that I cannot reset the accumulated value of the HSC since the customer wants to add existing data and store until i reaches a high preset. The monitor outputs about 2 pulses per minute, but I can't wait that long to show instantaneous flow rate. I know that I need to count the pulses and divide by the period. x=pulses, t=period, t=t2-t1. Is this right? Or is this easier that I think and making too difficult? How can I get the time between pulses or more importantly the instantaneous flow?
Other requirements are to show total flow (pulses x 100) in a day and a month.
I have been spending a lot of time on this and shortly (yesterday) I have to have a working program. Please help!!!!
Other requirements are to show total flow (pulses x 100) in a day and a month.
I have been spending a lot of time on this and shortly (yesterday) I have to have a working program. Please help!!!!