How do I create a flow totalizer using a flow transmitter?

[tscott19106]

How do I create a flow totalizer for a flow transmitter that sends a 4-20mA or 0-5v signal? Currently the transmitter has a local display that reads in gal/min. I need to generate an alarm if the daily total goes over 210 gallons, and also archive 90 totals.

[CJ_Butler__DASYLab_Pro]

Using DASYLab:

1 - connect the transmitter to your analog input device

2- read the voltage or current from the device

3 - scale the voltage or current to gal/min

4 - based on your sample rate, determine the scaling factor to compute the number of gallons per delta-t - scale the data again so that each datapoint reflects the volume of flow in the delta-t.

5 - use an arithmetic-one channel-summation function to compute the total flow

6 - for daily flow, reset the summation at midnight (Action module)

7 - use a trigger module to monitor the summation. When the total exceeds your setpoint, generate the alarm (audible, email, visual)

8 - set up the file save function to create a file each day, and to append to a total file at t
he end of each day, before the reset.

All of this requires DASYLab Full feature set.

[M_Atif]

Sir,

I am reading the analog values through Shared Variable and calculate the flow rate reading to m3.

Atif

[CJ_Butler__DASYLab_Pro]

If this is a new question, please post it again as a new topic, with information about the version of DASYLab, your operating system, and your DAQ device. Information about the sensor is valuable, too.

Then, clearly state your question. 

Thank you.