ST100A Series Flow Meter OPERATION
Fluid Components International LLC 85
Basic
The default mode of operation is Basic (no extended operating mode in effect). Use the Extended Op. Mode tab to change this.
Figure 61 – Example Extended Op. Mode Tab (Configuration)
External ST100A Series Flow Input (EFI)
Thi
s mode connects two separate ST100A Series flow meters for continuous flow averaging. This is done by sending 4-20 mA output
current (relative to flow rate) from one ST100A Series flow meter (Slave) to the Auxiliary Input port of the other ST100A Series flow meter
(Master). In this manner the Master displays the average flow rate and corresponding 4-20 mA output current.
Make the connections as shown in the wiring diagram in Figure 62 below.
Figure 62 – Connections for External Flow Input (EFI)
C01423-1-1
1 2 3 4 5 61 2 3 4 5 6
21 21
Aux. Board
J9 Connector
J8 Connector
(Ch. 3 4-20 mA
OUT)
J9-5 (4-20 mA IN) J9-6 (4-20 mA RET)
+ -
Aux. Board
J8-1 J8-2
+ -
ST100A SLAVE UNIT (4-20 mA OUT) ST100A MASTER UNIT (4-20 mA IN)
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. ST/MT Flow Input Setup field, select the Slave ST100A flow units from the drop-down list. Enter the flow rate equal to 4 mA
into the (Ext. ST/MT) Flow Min (4mA) text box. Enter the flow rate equal to 20 mA into the (Ext. ST/MT) Flow Max (20mA) text box.
(GRAYED OUT, SOLID)
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