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)
