A.5

Configuring Smart Meter Using Pushbuttons, Continued

 

 

 

 

 

 

 

Setting Lower and

The Table A-6 shows the restrictions on setting the display values for

Upper Display Values

given engineering units and output conformity selections.

Table A-6

Smart Meter Restrictions for Setting Display Values

 

 

 

 

 

 

 

 

 

 

Engineering

 

Output

 

Set

 

Units code

 

Conformity

Lower Display Value?

 

Upper Display Value?

 

 

 

 

 

 

 

 

EU0 through EUC

 

Linear

No (set automatically)

 

No (set automatically)

 

(Pressure type units)

 

 

 

 

 

 

 

 

 

 

 

 

EU0, EUD, EUE,and EUF

Square root

No (fixed at zero)

 

Yes

 

(%, GPM, GPH, or Custom)

 

 

 

Use Table A-8

 

 

 

 

 

 

 

 

 

 

EUF

 

Linear

Yes

 

Yes

 

(Custom)

 

 

Use Table A-7

 

Use Table A-8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Setting Lower and Upper Display Values

Setting Lower Display Values

ATTENTION

To set the lower and upper display limit values for the meter display perform the procedures in Tables A-7 and A-8. Also note that in each procedure you must:

•First set the magnitude range for each display value. This enables the multiplier (K) on the display for indicating larger ranges (greater than 19999 and shifts the decimal point of the digital display left or right depending on the precision you want to show for that value).

•Next set the display value. This procedure sets the display limit of the meter to represent minimum and maximim transmitter output (0% and 100 % output).

Note: Magnitude range and display values are set for both upper and lower (if applicable) display limits.

During normal operation, the display range of the meter digital readout is ±19,990,000 and is automatically ranged to provide the best precision possible for the digits available up to 1/100th of a unit.

The procedure in Table A-7 outlines the steps for setting the lower display limit to represent the 0 percent (LRV) output of the transmitter.

For example purposes, the procedures in Tables A-7 and A-8 assume that the lower value is to be set at 0 and the upper value is to be set at 19,990,000 for a CUSTOM unit in a transmitter with a LINEAR output, and the transmitter’s present output is exactly 50 percent.

Continued on next page

2/05

ST 3000 Release 300 Installation Guide

63