gas_prop

Purpose:

Compute and update gas properties based on input variables in a continuous manner.

Enter:

gas_prop <priority> <interval> <spec_file> [+c] &

Where:

priority

Specify the system task priority.

interval

Specify the time interval or rate the calculations should be made. 

spec_file

Specify the specification file path. 

+c

Optional. Specify this flag to indicate a critical task to the watchdog. The default is to leave the task non-critical.

Example:

gas_prop 12 1000 /specs/properties/prop_specs.319&
The above command sets the priority of the process to be 12 and performs  the gas properties at the rate of once every second.  

The gas_prop task will register its name with the spec_file name (not the full pathame), in this case “prop_specs.319”.  This name can be used by the ‘re-read’ command to request that it update the specifications by reading the specification file again.  This feature allows the specifications to be changed “on-the-fly” without slaying and restarting the app. 

Notes:

This process can be reconfigured by setting the re-read event to update specifications without restarting.

See Also:

Natural Gas Burner Sizing Calculations, Computing Gas Stream Composition and Gas Flow, Composition and Property Variables