A.6 Configuring Smart Meter Using SFC
Using the SFC to Configure the Smart Meter Display
Transmitter Output
Conformity and Smart
Meter Configuration
You can select an available engineering unit or enter a custom one including upper and lower limit settings for the smart meter’s digital readout using the SFC.
Normally when using a differential type transmitter, you can select the transmitter’s output to represent a straight linear calculation or a square root calculation for flow measurement applications. This linear or square root output parameter selection is called output conformity or output form. (See ST 3000 User manual for more details.)
When configuring the smart meter to display the transmitter output measurement, there are certain rules to keep in mind which are dependent on the output conformity selection. These rules are described in the following paragraphs.
1.The output conformity setting of the transmitter restricts the engineering units you can select for the smart meter display.
•When the transmitter is configured for an output conformity of LINEAR, you can select only pressure type engineering units. (See Table 6.)
•When the transmitter is configured for an output conformity of SQUARE ROOT, you can select only flow type engineering units GPM and GPH.
•The percent and custom engineering units can be selected regardless of output conformity configuration.
2.Additionally, the output conformity setting restricts the setting of the lower and upper display limits to represent transmitter’s 0 to 100% output.
•If you select pressure type engineering units, you cannot set the lower or upper display limits. These values are automatically set when you select the engineering units.
•You can set only the upper display limit when the transmitter is configured for SQUARE ROOT output conformity. The lower display limit is fixed at zero (0) for a transmitter in square root mode and cannot be changed.
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