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MT100 Multipoint Flow Meter
External MT100 Flow Input (EFI)
This mode connects two separate MT100 flow meters for continuous flow averaging. This is done by sending the CH2 4-20 mA output
current (relative to flow rate) from one MT100 (Slave) to the 4-20 mA input port of the other MT100 (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 40 below.
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 MT100 Flow Input (EFI) radio button. In the
window's Ext. MT100 Flow Input Setup field, select the Slave MT100 flow units from the drop-down list. Enter the flow rate equal to 4 mA
into the (Ext. MT100) Flow Min (4mA) text box. Enter the flow rate equal to 20 mA into the (Ext. MT100) 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
programming to the instrument. Observe return to normal operation with Running showing in System Mode field.
J9 Connector
Terminals
J9-3
+
MT100 SLAVE UNIT (CH2 4-20 mA OUT)
Fluid Components International LLC
MT100 I/O Interface,
Lower Right Edge of
SB4 Main Board
External 4-20 mA
Current Source
Figure 39 – Connections for External Input Flow Adjust (EIA)
MT100 I/O Interface,
Lower Left Edge of
SB4 Main Board
J9-5
Figure 40 – Connections for External MT100 Flow Input (EFI)
J8 Connector
Terminals
+
-
MT100 MASTER UNIT (4-20 mA IN)
J8-5
J8-6
+
-
C01388-1-1
MT100 I/O Interface,
Lower Right Edge of
SB4 Main Board
J8-5
+
OPERATION
J8 Connector
Terminals
J8-6
C01389-1-1
73
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Troubleshooting
