Chapter Two: Installation Connectors
35
Microjack Connectors
Three microjack connectors are located on the rear panel of the 246 unit (refer to Figure 8,
page 41).
Flow Out Connector
The Flow Out jack is used for data acquisition purposes, or for providing a master flow set point
voltage to other slave 246 units.
This connector provides the same function as pin 6 on the Interface connector J9, providing a
0 to 5 V sensor output voltage which is corrected by the front panel ZERO CONTROL.
Set Point In/Out Connectors
The Set Point In and Set Point Out jacks are internally connected in parallel and are used to
accept an external set point voltage.
When used with other 246 units for ratio set point operation, the FLOW OUT jack from the
master unit must be connected to the SP IN jack on the first slave 246 unit, then parallel
connected from the slave SP OUT jack to the next 246 unit's SP IN jack, and so on. Refer to
Figure 4, page 27, and Figure 6, page 29.
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