6.9 FlowConf Configuration - PV4, Continued

PV4 (Flow) Upper

Range Limit (URL)

and Range Values

(LRV and URV)

Set the URL, LRV, and URV for calculated flow rate PV4 output by typing in the desired values on the FlowConf tab card.

URL = Type in the maximum range limit that is applicable for your process conditions. (100,000 = default)

LRV = Type in the desired value (default = 0.0)

URV = Type in the desired value (default = URL)

ATTENTION

Be sure that you set the PV4 Upper Range Limit (URL) to desired value before you set PV4 range values. We suggest that you set the PV4 URL to equal two times the maximum flow rate (2 x URV).

About URL and LRL

The Lower Range Limit (LRL) and Upper Range Limit (URL) identify the

 

minimum and maximum flow rates for the given PV4 calculation. The

 

LRL is fixed at zero to represent a no flow condition. The URL, like the

 

URV, depends on the calculated rate of flow that includes a scaling factor

 

as well as pressure and/or temperature compensation. It is expressed as the

 

maximum flow rate in the selected volumetric or mass flow engineering

 

units.

 

 

 

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Honeywell SMV 3000 user manual Lower Range Limit LRL and Upper Range Limit URL identify, About URL and LRL