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Economic Control Set-Up

Economic Control Set-Up

Economic Control Set-Up

(OP)
Hi,

Looking for advice/suggestions/comments:

In a nutshell, need to control temperature of a temporary steam line by injecting condensate via a 2" line.  Steam flow is constant pressure/temperature/flow rate.  20" line, very low pressure (~50 psig).  Need to be able to set up and control in the field via laptop/plc/pid....once the temperature is at/near the setpoint, the process is very stable.  Equipment goes from job to job.  Economics are a concern, but the system must work.  High accuracy is not critical.  Have all plant utilities to work with (air, elec., etc).  A guy needs to be ablr to hitthe site, unpack his laptop & control valve, bolt it onto an existing 2" connection (screwed/flanged/etc) on the steam line and to the condensate source.  Power up, check temp., choose a lower setpoint, record data and control temp. for up to 2-3 days.  Get done, rig down, load up, move out....

My main interest right now is valve/actuator/positioner/plc.......help??

Thanks,

CW3

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