ST100 Series Flow Meter OPERATION
Fluid Components International LLC 29
Example Process Data Screen with EFI Mode Shown
External 4-20 mA Input Setup Screen
External ST100 Flow Input (EFI)
This mode connects two separate ST100 flow meters for continuous flow averaging. This is done by sending 4-20 mA output current (relative
to flow rate) from one ST100 (Slave) to the Auxiliary Input port of the other ST100 (Master). In this manner the Master displays the average
flow rate and corresponding 4-20 mA output current.
Make all necessary connections as shown in the wiring diagram in Figure B-20.
Start the application. Click USB Connect on the home screen. Select the Configuration branch from the menu tree on the window's left side.
Select the Extended Op. Mode tab. Click Toggle System Mode. Enter user level password 2772 at the prompt. Verify that instrument is
in the service state with Setup showing in the System Mode field. Click External ST100 Flow Input (EFI) radio button. In the window’s Ext.
ST100 Flow Input Setup field, select the Slave ST100 flow units from the drop-down list. Enter the flow rate equal to 4 mA into the (Ext. ST100)
Flow Min (4mA) text box. Enter the flow rate equal to 20 mA into the (Ext. ST100) Flow Max (20mA) text box.
At window bottom click Set System Mode to ‘Running’ when Send check box. Click Send to Device near check box to send the EFI program-
ming to the instrument. Observe return to normal operation with Running showing in System Mode field.
The Process Data screen on the ST100 configuration application will now display “EXTENDED OP MODE EFI” in the upper left corner. The
HMI display also shows EFI on the Group Number line after the HMI is refreshed. Refresh the HMI display by cycling the power to the unit or
covering the Hot Key for 3 seconds.
Enter Flow Input Setup
EFI Select
Select (Checked)
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